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必修二 Unit 4 Grammar and Usage 教學設計
Teaching aims:
By the end of this section, students will be able to:
identify and categorize the usage of modal verbs;
summarize general rules of modal verbs;
distinguish and use the right modal verbs to finish tasks of offering suggestions and making rules.
Teaching key and difficult points:
Distinguish and use the right modal verbs to finish tasks of offering suggestions and making rules.
Teaching procedures:
Step 1: Lead in (Free talk)
What kind of book do you like to read Why do you like it
_____________________________________________________________________
Step 2: Learning
Task 1: Read the website article and complete the mind map.
Task 2: Find the sentences that use modal verbs and fill in the table.
Suggestion What shall I read …you can get ideas from different sources… ...what books you ought to read You can also read book reviews in newspapers in magazines or online.
Ability Teachers in particular can provide suggestions for interesting reading materials that can be found in the library or bookshop easily. A book review can also tell you whether a book is worth reading or not.
Necessity However, you must also decide for yourself what kind of books to read. You do not have to read a book just because everyone recommends it.
Possibility You might have asked yourself this question more than once. These ideas should point you in the right direction. …you may find yourself better able to seek out books to your taste…
Working out the rulers
Model verbs can express ability or necessity. They can also make suggestions or describe the probability of an event. The same modal verb can have different functions.
Modal verbs can be followed by _____________. (a,d,e,f)
You can choose more than one answer for the blank.
do(the base form) d. be done(the passive voice)
b. doing(the verb-ing form) e. be doing(the continuous form)
c. did (the past form) f. have done (the perfect form)
Task 3: 情態動詞
定義：情態動詞是一種本身有一定的詞義, 表示說話人的情緒，態度或語氣的動詞，但不能單獨作謂語，只能和其他動詞原形構成謂語。
常見的情態動詞主要有：can/could，may/might，must/have to，will/would，shall/should/ ought to，dare等。
can/could
表示能力，意為“會，能”
Eg. I can speak English fluently.
表示可能性，意為“可能會”
Eg. Water can be turned into ice if it is cold enough.
表示許可或請求, 意為“可以”
Eg. Can you speak English Fluently
You can’t eat in the classroom.
表示推測，常用于否定句和疑問句中 can’t=can not 意為“不可能”
Eg. The door is open. Who can be in the classroom
This book can’t be mine. My book is in my bag.
may/might
表示請求，許可，意為“可以”，比can/could更為正式
Eg. May I open the window
You may/can call me tomorrow.
表示推測，用于談論可能性，常用于肯定句，意為“可能，或許”
Eg. I can’t find my book, I may have left it in my home.
表示祝愿
Eg. May you get more than you wish.
must/have to
表示“必須”
Eg. I must keep my word.
It rained heavily, so the students had to stay at home.
注意：must多為主觀意志，have to多為客觀需要；must只有一種時態，have to 則有多種時態變化。
shall/should/ought to
Shall的用法
用于第一、三人稱為主語的疑問句中，表示說話人征求對方的意見或請求
Eg. Shall I change into the evening dress for your party
Shall Mary go to the party with me
用語第二、三人稱做主語的陳述句中，表示說話人給對方的許諾、命令、警告等
Eg. You shall get an answer from me tomorrow.
Should的用法
作為shall的過去式，用于第一、三人稱為主語的疑問句轉化而成的間接引語中，以征求對方的意見
Eg. I asked the teacher if I should have one day off.
表示義務、職責等，意為“應該”
Eg. I think you should make an apology to her.
Ought to的用法與should差不對，should多表達自己的主觀看法，ought to 則多反映客觀情況。
will/would
表示意愿
Eg. They would not let me in because he was poorly dressed.
I will help you.
表示請求
Eg. Will you come in this way, please
表示規律性的“注定會”
Eg. You will regret forever if you lose this golden chance.
表示習慣或特性
Eg. Mary will keep asking some silly questions.
Step 3: Application
B1 For the following groups of three sentences, tick the sentence which uses the modal verb differently from the other two.
R a Can I keep the book for more than two weeks
b Nick can read more in an afternoon than I can in a week!
c Can Mary finish War and Peace in a month
a I am afraid I may be unable to finish this novel today.
b It may be difficult for people to agree on what good literature is.
R c You may go to the library tomorrow afternoon, if you have time.
a I must finish writing the book review and hand it in before Wednesday.
R b You must be tired after three hours’ reading.
c Students must develop the habit of reading classic literature.
a Henry should be reading books in the library.
b I have fifty dollars—that should be enough for three books.
R c Reading English novels has greatly increased my vocabulary — you should try it too.
B2 Below is an entry in a student’s reading plete the entry with the correct model verbs in brackets.
When my English teacher suggested that I read Charles Dickens’s A Christmas Carol, I thought, “I (1)_______(can’t/shouldn’t) read this! It (2)_______(has to/must) be very boring.” Surprisingly, it turned out the exact opposite. I (3)___________
(could/might) not stop turning the pages!
The book’s main character is Scrooge, a rich but mean old man. He hates all kinds of celebrations. On Christmas eve, he is transported to different points in his life by three spirits. In the end, he reflects on these moments and realizes his mistakes. Then he decides that he (4)_____________(might/must) change himself. On Christmas morning, he sends a large turkey to a poor man for Christmas dinner. He also tries to make his family and friends happy by spending time with them.
There is something that (5)___________(can/must) be learnt from A Christmas Carol: we (6)_________(should/may) treat others with kindness, generosity and love. I think everyone (7)_____________ (would/ought to) read this book.
參考答案： can’t must could must can should ought to
Step 4: Summary
Review what have been learnt.

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