資源簡介

(共73張PPT)
Unit 8 It must belong to Carla．
九年級
人教版
全
語法講練及解析
【知識導圖】
【要點拓展】
1．表示肯定的猜測時，must可能性最大，can／could次之，may／might最小。
2．表示否定的猜測時can’t／couldn’t語氣最強，指“不可能”；may not／might not語氣最弱，指“可能不”。
3．在反意疑問句中，當謂語動詞含有must／might／can等表推測意義時，疑問部分的助動詞應與情態動詞后面的動詞在非推測情況下的用法保持一致。
She must be a driver，isn’t she？她一定是個司機，是嗎？
It must have rained last night，didn’t it？昨晚一定下雨了，是不是？
4．在特定語境中，一些“情態動詞＋have done”具有一定感彩。
（1）ought to／should have done本該做，卻未做；oughtn’t to／shouldn’t have done 本不該做，卻做了（含責備之意）
例：You shouldn’t have done that，I had warned you of that several times.我已多次警告你，你本不該那么做的。
（2）might have done本可以做，卻沒做（表很委婉的責備）
例：You might have phoned me，though you were busy then.你再忙也該給我打個電話。
（3）could have done本可能，卻沒有
例：He could have caught the early bus， but he was delayed by helping a stranger.他本能夠趕上早班車，但因為幫一個陌生人而晚點。
（4）would（not）have done 本想做，卻沒做／本不想做，卻做了
例：I would have helped you，but I was too busy.我本想幫你，可我太忙了。
【奇思巧計】
【同步檢測】
一、單項選擇
1. -Whose jeans are these
-They______be John's. They are much larger than his.
A. might B. must C. can't
【答案】C
【詳解】句意：-這是誰的牛仔褲？-不可能是John的。這比他的大得多。
考查情態動詞表推測。might可能；must一定；can＇t不可能。根據“They are much larger than his.”，可知牛仔褲不可能是John的，表示可能性為零的推測，用can＇t。故選C。
2. -I think Mr Zhang may be in his office.
-No, he ______ be there. I saw him_______just now.
A. needn't; left B. mustn't; leaving C. can't; leave D. shouldn't; left
【答案】C
【詳解】句意：-我想張先生可能在辦公室。-不，他不可能在那里。我剛才看見他離開了。
考查情態動詞辨析和非謂語動詞。needn＇t不需要；mustn＇t禁止；can＇t不可以；shouldn＇t不應該。根據“I think Mr Zhang may be in his office.”以及“No，he...be there.”可知，此處表示“不可能在”，應該用can＇t；see sb.do sth. 意為“看到某人做了某事”，由“just now”可知，此處表示“看見他離開了”，因此第二個空用動詞原形。故選C。
3. -Sam, go to open the door, please. It______be your sister.
-No, Dad. It ____be her. She will be back after four o'clock.
A. May; mustn't B. must; can't C.must; mustn't
【答案】B
【詳解】句意：-山姆，請去開門。一定是你姐姐。-不，爸爸。不可能是她。她四點鐘后回來。考查情態動詞。May可能，mustn＇t禁止；must一定，必須，與be連用時，表示肯定推測，can＇t不能，與be連用時表示“不可能”。根據答語“No，Dad.”可知第一空是肯定推測，用must，根據“She will be back after fouro＇clock.”可知第二空是否定推測，用can＇t。故選B。
4. David ______ be at home, for no one answers the phone.
A. must B. mustn't C. can D. can't
【答案】D
【詳解】句意：大衛不可能在家，因為沒有人接電話。
考查情態動詞。must必須；mustn＇t禁止；can能；can＇t不可能。根據“for no one answers the phone.”可知沒有人接電話，所以他不可能在家，用can＇t。故選D。
5. It______be Lingling's book, but I'm not sure. Liu Hui likes reading, too.
A. can't B. must C. could
【答案】C
【詳解】句意：這可能是玲玲的書，但我不確定。劉輝也喜歡讀書。
考查情態動詞表推測。can＇t不會；must必須；could可能。根據“It...be Lingling＇s book，but I＇m not sure.”可知，此處指的是“我”不確定這是不是玲玲的書，空處應用could表示“可能是玲玲的書”。故選C。
6. --There is someone knocking on the door. I wonder who it ______ be.
-It_______be Frank. He phoned to tell me he would come to our home soon.
A. must; mustn’t B. could; must C.might; can't D. might; mustn't
【答案】B
【詳解】句意：-有人在敲門。我想知道是誰。-一定是弗蘭克。他打電話告訴我他很快就會來我們家。考查情態動詞。must一定；could可能；might可能；can＇t不可能；mustn＇t禁止。根據“There is someone knocking on the door.I wonder who it...be.”可知，空格處要填表推測的情態動詞，表示可能，故填could或might；根據“He phoned to tell me he would come to our home soon.”可知，空格處要填must表示肯定推測。故選B。
7. -Where is Linda
- I'm not sure. She ______ in the school library.
A. could be B. must be C. can't be D. will be
【答案】A
【詳解】句意：-Linda在哪里？-我不確定。她可能在學校圖書館。
考查情態動詞辨析。could be可能是；must be一定是；can＇t be不可能是；will be將是。根據“I＇m not sure”可知應是猜測的可能性不大，故選A。
8.-Maybe she is a teacher.
--No, she ______be. She _______be a nurse because I saw her in uniform in the hospital.
A. mustn't, maybe B. can't, could C. mustn't, must
【答案】B
【詳解】句意：-她可能是位老師。-不，她一定不是。她可能是一名護士，因為我看到她在醫院里穿護士服。
考查情態動詞。mustn＇t禁止；maybe可能；can＇t一定不；could可能；must必須。根據“She...be a nurse”可知，第一空應用can＇t，表示“一定不是”。再結合“because I saw her in uniform in the hospital.”可知，第二空應用could，表示“可能是”。故選B。
9. - I've taken a white jacket by mistake, - It _____ be Gina's. She sometimes wears white.
A. must B. should C. need D. could
【答案】D
【詳解】句意：-我拿錯了一件白色的夾克。-她可能是吉娜的。她有時候穿白色衣服。
考查情態動詞表推測。must一定；should應該；need需要；could可能。根據“She sometimes wears white”可知，吉娜有時候穿白色衣服，推測衣服可能是吉娜的。故選D。
10. Be careful with knives, or you ______cut your fingers.
A. must B.can C. may D. have to
【答案】C
【詳解】句意：小心用刀，否則你會割傷手指的。
考查情態動詞辨析。must 必須；can 能夠；may可能；have to不得不。根據“cut your fingers”可知，此處表示微小的可能性，故用情態動詞may。故選C。
11. -We can see some wild animals in the forest, right
-It's hard to say. There _____be only a few left.
A. may B. must C. need D. could
【答案】A
【詳解】句意：-我們可以在森林里看到一些野生動物，對嗎？-這很難說。可能只剩下幾只了。
考查情態動詞。may可能；must 必須；need需要；could能夠。根據“It＇s hard to say”和“There...be only a few left”可知，此處表示不確定性，且可能性不大。故應是可能只剩下幾只了。故選A。
12.--Daddy, I've signed for a big box by S.F. Express. What's in it
-I'm not sure. It_____ be a gift for you from your grandma.
A.may B. must C. should D. will
【答案】A
【詳解】句意：-爸爸，我已經簽收了順豐快遞的一個大箱子。里面是什么？-我不確定。這可能是你奶奶送給你的禮物。
考查情態動詞。may可能；must必須；should應該；will將，會，要。根據“I＇m not sure.It...be a gift”可知， 爸爸不確定盒子里有什么，因此“可能”符合語境，是情態動詞表推測的用法。故選A。
13. --What's the matter with Tom He has been absent for two days.
-He _____be ill. Let's go and ask Ms. White.
A. can B. need C. may D. would
【答案】C
【詳解】句意：-湯姆怎么了？他已經缺席兩天了。-他可能病了。我們去問問懷特女士吧。
考查情態動詞。can能；need需要；may可能；would將。根據“Let＇s go and ask Ms.White”可知是可能生病了，所以去問問懷特女士。故選C。
14. Our new PE teacher ______be in his twenties. He looks so young, only a few years older than us.
A. may B. must C. can't D. shouldn't
【答案】A
【詳解】句意：我們的新體育老師可能二十多歲。他看起來好年輕，只比我們大幾歲。
考查情態動詞。may可能；must一定；can＇t不可能；shouldn＇t不應該。根據“He looks so young，only a few years
older than us.”可知，此處表不確定的推測，表示可能二十多歲，用may表示。故選A。
15. --Where is Bob
--I'm not sure. He _____be on the playground.
A. must B. can't C.might
【答案】C
【詳解】句意：-鮑勃在哪兒？-我不確定。他可能在操場上。
考查情態動詞。must一定；can＇t不可能；might可能。根據“I＇m not sure.”可知不確定，說明鮑勃可能在操場上，故選C。
16.-What will the weather be like tomorrow
--I'm not sure. It ___ be rainy.
A.must B. might C. should
【答案】B
【詳解】句意：-明天的天氣怎么樣？-我不確定。可能會下雨。
考查情態動詞辨析。must必須；might可能；should應該。根據“T＇m not sure”可知，此處表示猜測某種可能性，應用might，故選B。
17. Ted _____go to the party with us tonight, but he hasn't decided yet.
A. must B. might C. ought D. will
【答案】B
【詳解】句意：特德今晚可能和我們一起去參加聚會，但他還沒有決定。
考查情態動詞。must必須；might可能；ought應該；will將。根據“he hasn＇t decided yet”可知，還沒決定是否去參加聚會，也就是可能會去。故選B。
18. I heard you laughing in the meeting room. You_____be very happy.
A. can B. should C. need D. must
【答案】D
【詳解】句意：我聽見你在會議室里笑。你一定很高興吧。
考查情態動詞辨析。can能；should應該；need需要；must必須，一定是。根據上文“I heard you laughing in the meeting room.”可知，聽到笑聲，由此推斷對方一定很開心，用must表示可能性很大的肯定推測。故選D。
19.--Whose dictionary is this
-lt_______be Jeff"s. Look! His name is on Page One.
A. should B. can't C. need D. must
【答案】D
【詳解】句意：-這是誰的詞典？-一定是杰夫的。看！第一頁上有他的名字。
考查情態動詞辨析。should應該；can＇t不能；need需要；must一定是，必須。根據回答句“Look！His name is on Page One.”可知此處表示這本詞典是杰夫的可能性很大，用must表示可能性大的肯定推測。故選D。
20.-You did well in the high jump, Tina. You_____have practiced a lot.
--Yeah. I trained hard at school for two months.
A. can B. could C. must D. might
【答案】C
【詳解】句意：-你跳高跳得很好，蒂娜。你一定練了很多。-是的。我在學校刻苦訓練了兩個月。考查情態動詞。can可能，表推斷常用否定形式；could可能，表推斷，不太肯定；must一定，；might可能。根據“You did well in the high jump”可知，是指一定練了很多，故選C。
21. -______Lily, is this suitcase yours
No, it isn't. It___ __ be Mary's. Look, there's her name on it.
A. must B. might C. mustn't D. can't
【答案】A
【詳解】句意：-莉莉，這箱子是你的嗎？-不，不是。一定是瑪麗的。看，上面有她的名字。考查情態動詞。must（表示很可能或符合邏輯）一定，肯定；might可能；mustn＇t不可以，禁止；can＇t不會，不能。根據“It...be Mary＇s.Look，there＇s her name on it.”可知此處表達的是箱子一定是瑪麗的。故選A。
22. -Hi, Tom. Do you know where David is
--He _______be in the classroom, I saw him run into the classroom a minute ago.
A. must B. need C.can D. may
【答案】A
【詳解】句意：-嗨，湯姆。你知道大衛在哪里嗎？-他一定在教室里。我一分鐘前看見他跑進教室。考查情態動詞。must一定；need需要；can能；may可能。根據“I saw him run into the classroom a minute ago.”可知一分鐘前看到他跑進了教室，所以他一定在教室里。故選A。
23. --Lily, is this handbag yours
--No. It ______be Lucy's. Look! There is her name on it.
A.can B. must C. should D. might
【答案】B
【詳解】句意：-莉莉，這個手提包是你的嗎？-不是。一定是露西的。看上面有她的名字。
考查情態動詞。can能夠；must一定；should應該；might可能。根據“There is her name on it”可知上面有她的名字，所以一定是她的。故選B。
24.-Look, Sarah, there's a red notebook on the desk. Whose is it
-It_______be Tom's as his notebook is blue. It be Lily's as her name is on the cover,
A. mustn't; must B. mustn't; can C. can't; must D. can't; may
【答案】C
【詳解】句意：-看，Sarah，桌上有一個紅色的筆記本。這是誰的？-不可能是湯姆的，因為他的筆記本是藍色的。肯定是莉莉的，因為封面上有她的名字。
考查情態動詞。mustn＇t禁止；must必須；can可能；can＇t不可能；may可能。根據“as his notebook is blue”可知，紅色筆記本不可能是湯姆的，第一空can＇t符合句意；再者根據“as her name is on the cover”可知，筆記本封面上有莉莉的名字，因此肯定是莉莉的，must符合句意。故選C。
25. There _____ something wrong with my mobile phone. It can't work these days.
A. must be B. can't be C.may be D. mustn't be
【答案】A
【詳解】句意：我的手機肯定有問題。這些天都不能正常使用了。
考查情態動詞表推測。must be一定；can＇t be不可能；不能；may be可能；mustn＇t be不準，禁止。根據“It can＇t work these days.”可知這些天手機無法使用，那么“一定”是出問題了。故選A。
二、完成句子
26. 那個女孩不可能是我妹妹，她去北京了。
That girl _______my sister. She has gone to Beijing.
【答案】can＇t be
【詳解】對比中英文，再根據“She has gone to Beijing.”可知，她已經去北京了，空處應為“不可能是”，can＇t be“不可能是”，情態動詞后面加動詞原形；can表示推測，意為“可能”，一般用于否定句和疑問句中。故填can't be。
27.他可能是為了鍛煉正在跑步。
He _________ for exercise.
【答案】could be running
【詳解】根據中文意思，空白處應填入表示“可能（為了鍛煉）正在跑步”。情態動詞could 后跟進行時表示對當下正在發生情況的推測，即could be doing意為“可能正在做......”，run意為“跑步”，應改為現在分詞形式running。故填 could be running。
28.他看起來很擔心。他可能要上學遲到了，
He looks worried. He_______ _______late for school.
【答案】may／might be
【詳解】根據句式可知，是“主系表”結構，may／might“可能”，情態動詞，后接動詞原形；be late for“做某事遲到”，故填may／might；be。
29.那玩具卡車一定是簡的弟弟的。
The toy truck______ ______to Jane's little brother.
【答案】 must belong
【詳解】“一定”must，情態動詞，表示肯定的推測，其后跟動詞原形；“是......的”也就是“屬于......的”，用動詞短語 belong to sb，故填must；belong。
30. 一定有什么東西闖入我們社區的住戶家中。
There _______ something visiting the homes in our neighborhood.
【答案】must be
【詳解】根據“There...something visiting the homes in our neighborhood.”可知，there be表示“有”；must“一定”，表示肯定推測。故填must be。
三、句型轉換
31. I'm sure you are hungry. I'll get something to eat for you.(改同義句)
I think you______ _______hungry. I'll get something to eat for you.
【答案】 must be
【詳解】原句I＇m sure you are hungry．是肯定推測，可換用must be表達。根據句意結構，可知填（1）．must (2).be。
32. Maybe there is something strange in the sky.(改為同義句)
There ______something strange in the sky.
【答案】may be
【詳解】句意：或許天空中有什么奇怪的東西。原句中maybe表示“或許”，在句中作狀語，相當于maybe“或
許是，可能是”，放在句中主語后，may是情態動詞，后接動詞原形be，故填may be。
33. The weather must be very cold outside.(變為否定句)
The weather______ ______very cold outside.
【答案】 can't be
【詳解】句意：外邊天氣一定很冷。考查肯定句變為否定句。原句為must表推測的肯定句，其否定句應為表否定推測，故應用can＇t表示否定推測。情態動詞后要跟動詞原形，故后跟be。故填can＇t；be。
34. The tall man must be Jim’s uncle.(完成反意疑問句)
The tall man must be Jim's uncle,______ _____
【答案】 isn't he
【詳解】句意：那個高個子一定是吉姆的叔叔。在陳述句中，若must表示推測時，反意疑問句要根據must后的動詞采用相應的形式。must后為be，且主語為the tall man，故填isn＇t he。
35. Someone is knocking at my door. It must be Tom.(合并為一句)
It______ be Tom ______at my door.
【答案】 must knocking
【詳解】Someone is knocking at my door.It must be Tom.（合并為一句）根據must be sb doing sth 一定是某人在做某事；故填（1）．must （2）．knocking
[真題鏈接]
1.(2023·湖南益陽·統考中考真題)-Are those Jim's glasses
--They____be Jim's because he doesn't wear glasses.
A. can't B. mustn't C. needn't
【答案】A
【詳解】句意：-那些是Jim的眼鏡嗎？-它們不可能是Jim的，因為他不戴眼鏡。
考查情態動詞辨析。can＇t不可能；mustn＇t禁止；needn＇t不必。根據“because he doesn＇t wear glasses”可知， 不戴眼鏡所以不可能是他的，否定推測用can＇t，故選A。
2.(2020·甘肅·統考中考真題)You haven't eaten all day. You ___be very hungry.
A. couldn't be B. can't C. might D. must
考查情態動詞表推測。couldn＇t be 不可能是；can＇t不可能；might可能；must一定。根據“You haven＇t eaten all day.”，可知應該是“一定很餓”，故選D。
3.(2023-四川甘孜·統考中考真題)--Is Tony coming to the book show this Sunday
-I'm not sure. He ___ not come.
A. may B. should C. must D. need
【答案】A
【詳解】句意：-托尼這個星期天會來參加書展嗎？-我不確定。他可能不會來。
考查情態動詞。may可能；should應該；must一定；need需要。根據“I＇m not sure.”可知表示不確定的推測應用may。故選A。
4.(2022·遼寧錦州·統考中考真題)-Will plants grow on other planets
-That _______be true. It's really difficult to predict the future.
A. mustn't B. should C. needn't D. may
【答案】D
【詳解】句意：-植物會在其他星球上生產嗎？-那可能是真的。未來真的很難預測。
考查情態動詞。mustn＇t不可以，表禁止；should應該，應當；needn＇t不需要；may可能，表推測。根據“It＇s really difficult to predict the future”可知，未來很難預測，因此推測可能是真的。故選D。
5.(2022-湖南益陽·統考中考真題)-Is it important to protect wild animals, Susan
--Yes. If we don't protect them, they_____die out one day.
A. need B. can't C. may
【答案】C
【詳解】句意：-保護野生動物很重要嗎，蘇珊？-是的。如果我們不保護它們，它們有一天可能會滅絕。
考查情態動詞。need需要；can＇t不能；may可能。根據“If we don＇t protect them，they...die out one day.”可知， 表示一種可能性，應用may，故選C。
6.(2017-湖南湘潭·統考中考真題)Andy _____ come to our reading club, but she hasn't decided yet.
A. may B. mustn't C.will
【答案】A
【詳解】句意：安迪可能會來我們的閱讀俱樂部，但她還沒有決定。
考查情態動詞，may可能；mustn＇t禁止；will將要。根據“but she hasn＇t decided yet.”，可知應該四可能，故選A。
7.(2020·江蘇無錫·統考中考真題)You ______be able to control all the things that happen to you, but you can decide not to be reduced by them.
A. need not B. may not C. must not D. should not
【答案】B
【詳解】句意：你可能無法控制發生在你身上的所有事情，但你可以決定不被它們拖累。
考查情態動詞辨析。need not不需要；may not可能不；must not禁止，不能；should not不應該。根據句中“but you can decide not to be reduced by them”可知，此處使用may not，表示推測，意為“你可能無法控制發生在你身上的所有事情，但你可以決定不被它們拖累”。故選B。
8.(2023-湖北襄陽·統考中考真題)--Does the sports watch belong to Mary
--_____be hers. She is the only one who wears the sports watch in our class.
A. can't B. must C.might D. could
【答案】B
【詳解】句意：-這塊運動手表是瑪麗的嗎？-一定是她的。她是我們班唯一戴運動表的人。
考查情態動詞。can＇t不可能；must一定；might可能；could能夠。根據“She is the only one who wears the sports watch in our class.”可知瑪麗是班里唯一戴運動表的人，所以這塊運動手表一定是瑪麗的，表達有把握的肯定推測用must。故選B。
9.(2023·遼寧盤錦·統考中考真題)Tina lost her pet dog. She ____ be worried about it.
A. need B. must C. can't D. shouldn't
【答案】B
【詳解】句意：蒂娜丟了她的寵物狗。她一定很擔心。
考查情態動詞。need需要；must一定；can＇t不可能；shouldn＇t不應該。根據“Tina lost her pet dog”可知丟失了寵物狗，一定很擔心，表示有把握的肯定推測應用must。故選B。
10.(2022-廣西玉林·統考中考真題)--Hey, whose basketball do you think this is
--It ________belong to Linda. She likes playing basketball best in our class.
A. must B. can C. mustn't D. can't
【答案】A
【詳解】句意：-嘿，你認為這是誰的籃球？-那一定屬于Linda。她在我們班最喜歡打籃球。
考查情態動詞辨析。must一定；can能夠。mustn＇t禁止；can＇t不可能。根據“She likes playing basketball best in our class”可知，推測一定是Linda的，表十分肯定的推測用must，故選A。
11.(2022-黑龍江牡丹江·統考中考真題)--Angel, I have moved near People's Park.
-Oh, it ______ be very convenient. You can exercise there any time now.
A. must B. might C. could
【答案】A
【詳解】句意：-安吉拉，我搬到人民公園附近了。-哦，那一定很方便。現在你隨時都可以去那里鍛煉。
考查動詞辨析。must必須；might可能；could能。根據“it...be very convenient”可知，此處是非常肯定的推測，故選A。
12.(2022·內蒙古包頭·統考中考真題)-You______be excited-you have tickets for your favourite band! --Yes. It's unbelievable that I can see the band play live!
A.need B. have to C. must D. might
【答案】C
【詳解】句意：-你得到了你最愛的樂隊的票，你一定很興奮。-是的。我可以看到樂隊的現場演奏會，真是難以置信。
考查情態動詞。need 需要；have to不得不；must必須；might可能。根據“you have tickets for your favourite band”可知，句子表達肯定猜測“一定很興奮”。故選C。
13.(2022-湖北鄂州·統考中考真題)-Whose is this toy truck
-It _____belong to Dick. He was the only little kid at the picnic.
A.can't B. must C. could D. need
【答案】B
【詳解】句意：-這輛玩具卡車是誰的？-它一定是迪克的。他是野餐會上唯一的小孩。
考查情態動詞。can＇t不能；must一定；could可能；need需要。根據“He was the only little kid at the picnic.”
可知迪克是野餐會上唯一的小孩，所以這個玩具卡車一定是他的，故選B。
14.(2022·天津·統考中考真題)The book____be Mary's. We can see her name on it.
A. need B. must C. can't D. needn't
【答案】B
【詳解】句意：這本書一定是瑪麗的。我們可以在上面看到她的名字。
考查情態動詞辨析。need 需要；must一定；can＇t不可能；needn＇t不需要。根據“We can see her name on it”可知，此處表示肯定推測，故選B。
15. (2022-四川瀘州·統考中考真題)-David, do you know Su Yiming, a snowboarder from China -Sure. He won the first place in the men's Big Air Event. He_____be hard-working.
A. needn't B. can't C. should D. must
【答案】D
【詳解】句意：-大衛，你認識來自中國的單板滑雪運動員蘇翊鳴嗎？-當然。他在男子大跳臺賽事中獲得第一名。他一定很努力。
考查情態動詞。needn＇t不必；can＇t不能；should應該；must一定。根據“He won the first place in the men＇s Big Air Event”可知他獲得了第一名，所以此處作肯定推測，他一定很努力。故選D。
16.(2017-貴州六盤水-統考中考真題)The dictionary at the Lost and Found ___be Tim's, because his name is on its cover.
A. can B. mustn't C. can't D. must
【答案】D
【詳解】句意：失物招領處的那本詞典一定是蒂姆的，因為封面上有他的名字。
考查動詞辨析。can可以；mustn＇t禁止；can＇t不可能；must必須，一定。根據“because his name is on its cover”可知，此處表示肯定推測，故選D。
17.(2023-山東菏澤·統考中考真題)-Where are you going this summer vacation
--______go to Zibo, but I'm not sure.
A. must B. needn't C. might
【答案】C
【詳解】句意：-這個暑假你要去哪里？-我可能去淄博，但我不確定。
考查情態動詞。must必須；needn＇t不需要；might可能。根據“but I＇m not sure.”可知，此處指可能去淄博，表一種可能的推測。故選C。
18.(2023-全國·九年級專題練習)-When Monday I'm afraid Monday_____be a problem for me.
-But why I know you are free on Monday.
A.need B. needn't C. might not D. might
【答案】D
【詳解】句意：-什么時候？星期一？恐怕星期一對我來說可能是個問題。-但是為什么？我知道你星期一有空。考查情態動詞。need需要；needn＇t不需要；might not可能不；might可能。根據“I＇m afraid Monday...be a problem for me.”可知，此處指恐怕星期一可能沒空，故用might。故選D。
19.(2022-湖南懷化·統考中考真題)-Whose English book is this
-I______ be Lily's, but I'm not sure.
A. might B. can't C. must
【答案】A
【詳解】句意：-這是誰的英語書？-可能是莉莉的，但我不確定。
考查情態動詞。might可能；can＇t不可能；must一定；結合“but I＇m not sure.”可知，此處是一種不確定的推測，應用might，故選A。
20.(2021·四川資陽·統考中考真題)-Lucy, could you give me some suggestions on reading
-OK. My first suggestion is that you ______have a good reading habit.
A. will B. can C.might D. should
【答案】D
【詳解】句意：-露西，你能不能給我一些閱讀上的建議？-好的。我的第一個建議是你應該有一個良好的閱讀習慣。
考查情態動詞辨析。will將會；can能、會；might可能；should應該。根據主語“My first suggestion”可知，應是你應該有良好的閱讀習慣，表示對別人提出建議。故選D。
21.(2023-全國·九年級專題練習)--Is that Jim running on the playground
--It ____be him. He is always in the library at this time.
A, mustn't B. shouldn't C. can't D. needn't
【答案】C
【詳解】句意：-在操場上跑步的是吉姆嗎？-不可能是他。這個時候他總是在圖書館。
考查動詞辨析。mustn＇t禁止；shouldn＇t不應該；can＇t不可能；needn＇t不需要。根據“It...be him.He is always in the library at this time.”可知，吉姆這個時候都在圖書館，所以不可能在操場跑步，故選C。
22.(2017-四川眉山·統考中考真題)Mr. Smith_____be at home. He has gone to Hong Kong.
A. can B. can't C. must D. mustn't
【答案】B
【詳解】句意：史密斯先生不可能在家。他去香港了。
考查情態動詞辨析。can能夠；can＇t不可能；must 必須；mustn＇t禁止。根據“He has gone to Hong Kong”可知，去了香港所以不可能在家，表否定推測用can’t，故選B。
23.(2017-遼寧鞍山·統考中考真題)--Do you think that Yao Ming will be elected(選舉) as the MVP this year --It_______ him. He has retired(退役) for several years.
A. can't be B. mustn't be C. can be D. must be
【答案】A
【詳解】句意：-你認為姚明會被選為今年最優秀的球員嗎？-不可能是他。他已經退役幾年了。
考查情態動詞。can＇t不可能，表示有把握的否定推測；mustn＇t禁止；must一定，表示有把握的肯定推測；can 能夠，表示能力。根據“He has retired（退役）for several years.”可知，此處有依據證明姚明不可能被選為最優秀的球員。否定推測用can＇t，故選A。
24.(2022·云南玉溪·統考一模)-Oh, my God! I'll nearly lose my heart.
--Cheer up. Life ______ be perfect all the time.
A, can't B. mustn't C. needn't D. shouldn't
【答案】A
【詳解】句意：-哦，我的上帝！我幾乎要失去信心了。-振作起來。生活不可能總是完美的。考查動詞辨析。can＇t不可能；mustn＇t禁止；needn＇t不必；shouldn＇t不應該。根據“Life...be perfect all the time.”可知，此處是指生活不可能總是完美的，表示否定推測用can＇t。故選A。
25.(2021-遼寧·統考中考真題)Sit down, please. You _____ be tired after standing for so long.
A. could B. can C. must D.might
【答案】C
【詳解】句意：請坐。站了這么久，你一定累了。
考查情態動詞表推測。could可能；can可能；must一定；might也許。根據“after standing for so long”可知，這里指一定累了，故選C。
26.(2021-新疆·統考中考真題)-I saw Mr. Li in his office just now,
-No, it ___be him. He has___Guangzhou and will be back in two days.
A. mustn't; gone to B. mustn't; been to
C. can't: been to D. can't: gone to
【答案】D
【詳解】句意：-我剛才看見李先生在他的辦公室里。-不，不可能是他。他去了廣州，兩天后回來。考查情態動詞和現在完成時。mustn＇t禁止；can＇t不可能；have been to意為“曾經去過某地”，表示現在已不在那里了；have gone to 意為“已經去了某地”，說話時此人還沒回來。根據下文“He has gone to Guangzhou”可知，此處表否定推測，A、B選項可排除。根據下文“will be back in two days”可知，李先生還在廣州沒有回來，故第二空應用gone to。故選D。
27.(2020-天津·統考中考真題)I_____ be late, so don't wait for me to start the meeting.
A. mustn't B. needn't C. need D. may
【答案】D
【詳解】句意：我可能要遲到了，因此開始開會吧，不要等我。
考查情態動詞。mustn＇t禁止；needn＇t沒必要；need需要；may可能。根據“so don＇t wait for me to start the meeting”可知此處表示不確定推測，用may表示“可能”。故選D。
28.(2020·江蘇連云港·統考中考真題)If we don't protect nature, some wildlife die out in the future.
A. need B. may C. can't D. shouldn't
【答案】B
【詳解】句意：如果我們不保護自然，一些野生動物將來可能會滅絕。
考查情態動詞。need需要；may可能；can＇t可能不，一定不；shouldn＇t不應該。根據句意可知，空處表示肯定推測；結合選項可知，選項里表肯定推測的情態動詞只有may，可能會滅絕may die out符合語境。故選B。
29.(2020·四川廣元·統考中考真題)There____something wrong with my mobile phone. It can't work these days.
A. must be B. can't be C.may be
【答案】A
【詳解】句意：我的手機肯定有問題。這些天都不能正常使用了。
考查情態動詞表推測。must be 一定；can＇t be 不可能；不能；may be 可能。根據It can＇t work these days.可知這些天手機無法使用，那么“一定”是出問題了。故選A。
30.(2020-黑龍江·統考中考真題)--Where is Monica I can't find her anywhere.
-She _______be in the library. She loves reading books when she is free.
A.can B. must C. can't
【答案】B
【詳解】句意：-莫妮卡在哪里？我到處都找不到她。-她一定在圖書館。她有空的時候喜歡讀書。考查情態動詞。can可能，常用于一般疑問句或否定句；must肯定、一定；can＇t不可能。根據“She loves reading books when she is free.”可知她有空的時候喜歡讀書，句子是肯定句，此處是有把握的肯定猜測，用“must”。
Thanks!
21世紀教育網（www.21cnjy.com)
中小學教育資源網站
有大量高質量資料？一線教師？一線教研員？
歡迎加入21世紀教育網教師合作團隊！！月薪過萬不是夢！！
詳情請看：
https://www.21cnjy.com/help/help_extract.php/ 讓教學更有效 英語學科
Unit 8 It must belong to Carla．
語法講練
【知識導圖】
【要點拓展】
1．表示肯定的猜測時，must可能性最大，can／could次之，may／might最小。
2．表示否定的猜測時can’t／couldn’t語氣最強，指“不可能”；may not／might not語氣最弱，指“可能不”。
3．在反意疑問句中，當謂語動詞含有must／might／can等表推測意義時，疑問部分的助動詞應與情態動詞后面的動詞在非推測情況下的用法保持一致。
She must be a driver，isn’t she？她一定是個司機，是嗎？
It must have rained last night，didn’t it？昨晚一定下雨了，是不是？
4．在特定語境中，一些“情態動詞＋have done”具有一定感彩。
（1）ought to／should have done本該做，卻未做；oughtn’t to／shouldn’t have done 本不該做，卻做了（含責備之意）
例：You shouldn’t have done that，I had warned you of that several times.我已多次警告你，你本不該那么做的。
（2）might have done本可以做，卻沒做（表很委婉的責備）
例：You might have phoned me，though you were busy then.你再忙也該給我打個電話。
（3）could have done本可能，卻沒有
例：He could have caught the early bus， but he was delayed by helping a stranger.他本能夠趕上早班車，但因為幫一個陌生人而晚點。
（4）would（not）have done 本想做，卻沒做／本不想做，卻做了
例：I would have helped you，but I was too busy.我本想幫你，可我太忙了。
【奇思巧計】
【同步檢測】
一、單項選擇
1. -Whose jeans are these
-They______be John's. They are much larger than his.
A. might B. must C. can't
2. -I think Mr Zhang may be in his office.
-No, he ______ be there. I saw him_______just now.
A. needn't; left B. mustn't; leaving C. can't; leave D. shouldn't; left
3. -Sam, go to open the door, please. It______be your sister.
-No, Dad. It ____be her. She will be back after four o'clock.
A. May; mustn't B. must; can't C.must; mustn't
4. David ______ be at home, for no one answers the phone.
A. must B. mustn't C. can D. can't
5. It______be Lingling's book, but I'm not sure. Liu Hui likes reading, too.
A. can't B. must C. could
6. --There is someone knocking on the door. I wonder who it ______ be.
-It_______be Frank. He phoned to tell me he would come to our home soon.
A. must; mustn’t B. could; must C.might; can't D. might; mustn't
7. -Where is Linda
- I'm not sure. She ______ in the school library.
A. could be B. must be C. can't be D. will be
8.-Maybe she is a teacher.
--No, she ______be. She _______be a nurse because I saw her in uniform in the hospital.
A. mustn't, maybe B. can't, could C. mustn't, must
9. - I've taken a white jacket by mistake, - It _____ be Gina's. She sometimes wears white.
A. must B. should C. need D. could
10. Be careful with knives, or you ______cut your fingers.
A. must B.can C. may D. have to
11. -We can see some wild animals in the forest, right
-It's hard to say. There _____be only a few left.
A. may B. must C. need D. could
12.--Daddy, I've signed for a big box by S.F. Express. What's in it
-I'm not sure. It_____ be a gift for you from your grandma.
may B. must C. should D. will
13. --What's the matter with Tom He has been absent for two days.
-He _____be ill. Let's go and ask Ms. White.
A. can B. need C. may D. would
14. Our new PE teacher ______be in his twenties. He looks so young, only a few years older than us.
A. may B. must C. can't D. shouldn't
15. --Where is Bob
--I'm not sure. He _____be on the playground.
A. must B. can't C.might
16.-What will the weather be like tomorrow
--I'm not sure. It ___ be rainy.
must B. might C. should
17. Ted _____go to the party with us tonight, but he hasn't decided yet.
A. must B. might C. ought D. will
18. I heard you laughing in the meeting room. You_____be very happy.
A. can B. should C. need D. must
19.--Whose dictionary is this
-lt_______be Jeff"s. Look! His name is on Page One.
A. should B. can't C. need D. must
20.-You did well in the high jump, Tina. You_____have practiced a lot.
--Yeah. I trained hard at school for two months.
A. can B. could C. must D. might
21. -______Lily, is this suitcase yours
No, it isn't. It___ __ be Mary's. Look, there's her name on it.
A. must B. might C. mustn't D. can't
22. -Hi, Tom. Do you know where David is
--He _______be in the classroom, I saw him run into the classroom a minute ago.
A. must B. need C.can D. may
23. --Lily, is this handbag yours
--No. It ______be Lucy's. Look! There is her name on it.
can B. must C. should D. might
24.-Look, Sarah, there's a red notebook on the desk. Whose is it
-It_______be Tom's as his notebook is blue. It be Lily's as her name is on the cover,
A. mustn't; must B. mustn't; can C. can't; must D. can't; may
25. There _____ something wrong with my mobile phone. It can't work these days.
A. must be B. can't be C.may be D. mustn't be
二、完成句子
26. 那個女孩不可能是我妹妹，她去北京了。
That girl _______my sister. She has gone to Beijing.
他可能是為了鍛煉正在跑步。
He _________ for exercise.
他看起來很擔心。他可能要上學遲到了，
He looks worried. He_______ _______late for school.
29.那玩具卡車一定是簡的弟弟的。
The toy truck______ ______to Jane's little brother.
30. 一定有什么東西闖入我們社區的住戶家中。
There _______ something visiting the homes in our neighborhood.
三、句型轉換
31. I'm sure you are hungry. I'll get something to eat for you.(改同義句)
I think you______ _______hungry. I'll get something to eat for you.
32. Maybe there is something strange in the sky.(改為同義句)
There ______something strange in the sky.
33. The weather must be very cold outside.(變為否定句)
The weather______ ______very cold outside.
34. The tall man must be Jim’s uncle.(完成反意疑問句)
The tall man must be Jim's uncle,______ _____
35. Someone is knocking at my door. It must be Tom.(合并為一句)
It______ be Tom ______at my door.
[真題鏈接]
1.(2023·湖南益陽·統考中考真題)-Are those Jim's glasses
--They____be Jim's because he doesn't wear glasses.
A. can't B. mustn't C. needn't
2.(2020·甘肅·統考中考真題)You haven't eaten all day. You ___be very hungry.
A. couldn't be B. can't C. might D. must
3.(2023-四川甘孜·統考中考真題)--Is Tony coming to the book show this Sunday
-I'm not sure. He ___ not come.
A. may B. should C. must D. need
4.(2022·遼寧錦州·統考中考真題)-Will plants grow on other planets
-That _______be true. It's really difficult to predict the future.
A. mustn't B. should C. needn't D. may
5.(2022-湖南益陽·統考中考真題)-Is it important to protect wild animals, Susan
--Yes. If we don't protect them, they_____die out one day.
A. need B. can't C. may
6.(2017-湖南湘潭·統考中考真題)Andy _____ come to our reading club, but she hasn't decided yet.
A. may B. mustn't C.will
7.(2020·江蘇無錫·統考中考真題)You ______be able to control all the things that happen to you, but you can decide not to be reduced by them.
A. need not B. may not C. must not D. should not
8.(2023-湖北襄陽·統考中考真題)--Does the sports watch belong to Mary
--_____be hers. She is the only one who wears the sports watch in our class.
A. can't B. must C.might D. could
9.(2023·遼寧盤錦·統考中考真題)Tina lost her pet dog. She ____ be worried about it.
A. need B. must C. can't D. shouldn't
10.(2022-廣西玉林·統考中考真題)--Hey, whose basketball do you think this is
--It ________belong to Linda. She likes playing basketball best in our class.
A. must B. can C. mustn't D. can't
11.(2022-黑龍江牡丹江·統考中考真題)--Angel, I have moved near People's Park.
-Oh, it ______ be very convenient. You can exercise there any time now.
A. must B. might C. could
12.(2022·內蒙古包頭·統考中考真題)-You______be excited-you have tickets for your favourite band! --Yes. It's unbelievable that I can see the band play live!
A.need B. have to C. must D. might
13.(2022-湖北鄂州·統考中考真題)-Whose is this toy truck
-It _____belong to Dick. He was the only little kid at the picnic.
can't B. must C. could D. need
(2022·天津·統考中考真題)The book____be Mary's. We can see her name on it.
A. need B. must C. can't D. needn't
15. (2022-四川瀘州·統考中考真題)-David, do you know Su Yiming, a snowboarder from China -Sure. He won the first place in the men's Big Air Event. He_____be hard-working.
A. needn't B. can't C. should D. must
16.(2017-貴州六盤水-統考中考真題)The dictionary at the Lost and Found ___be Tim's, because his name is on its cover.
A. can B. mustn't C. can't D. must
17.(2023-山東菏澤·統考中考真題)-Where are you going this summer vacation
--______go to Zibo, but I'm not sure.
A. must B. needn't C. might
18.(2023-全國·九年級專題練習)-When Monday I'm afraid Monday_____be a problem for me.
-But why I know you are free on Monday.
A.need B. needn't C. might not D. might
19.(2022-湖南懷化·統考中考真題)-Whose English book is this
-I______ be Lily's, but I'm not sure.
A. might B. can't C. must
20.(2021·四川資陽·統考中考真題)-Lucy, could you give me some suggestions on reading
-OK. My first suggestion is that you ______have a good reading habit.
A. will B. can C.might D. should
21.(2023-全國·九年級專題練習)--Is that Jim running on the playground
--It ____be him. He is always in the library at this time.
A, mustn't B. shouldn't C. can't D. needn't
(2017-四川眉山·統考中考真題)Mr. Smith_____be at home. He has gone to Hong Kong.
A. can B. can't C. must D. mustn't
23.(2017-遼寧鞍山·統考中考真題)--Do you think that Yao Ming will be elected(選舉) as the MVP this year --It_______ him. He has retired(退役) for several years.
A. can't be B. mustn't be C. can be D. must be
24.(2022·云南玉溪·統考一模)-Oh, my God! I'll nearly lose my heart.
--Cheer up. Life ______ be perfect all the time.
A, can't B. mustn't C. needn't D. shouldn't
(2021-遼寧·統考中考真題)Sit down, please. You _____ be tired after standing for so long.
A. could B. can C. must D.might
26.(2021-新疆·統考中考真題)-I saw Mr. Li in his office just now,
-No, it ___be him. He has___Guangzhou and will be back in two days.
A. mustn't; gone to B. mustn't; been to
C. can't: been to D. can't: gone to
27.(2020-天津·統考中考真題)I_____ be late, so don't wait for me to start the meeting.
A. mustn't B. needn't C. need D. may
28.(2020·江蘇連云港·統考中考真題)If we don't protect nature, some wildlife die out in the future.
A. need B. may C. can't D. shouldn't
29.(2020·四川廣元·統考中考真題)There____something wrong with my mobile phone. It can't work these days.
A. must be B. can't be C.may be
30.(2020-黑龍江·統考中考真題)--Where is Monica I can't find her anywhere.
-She _______be in the library. She loves reading books when she is free.
can B. must C. can't
21世紀教育網(www.21cnjy.com)

展開更多......

收起↑