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(共47張PPT)
Unit 3
Trees and us
七年級
滬教版（2024）
下
核心知識梳理總結(jié)
梳理內(nèi)容
01
單元單詞梳理
05
單元語法梳理
02
單元詞形變換
03
單元短語梳理
04
單元句型梳理
06
話題寫作講解
01
單元單詞梳理
單元單詞梳理
詞匯 音標 詞性和詞義
branch /brɑ:nt / n.樹枝
root /ru:t/ n.根；根莖
convenient /k n vi:ni nt/ adj.便利的；方便的
create /kri e t/ v.創(chuàng)造
environment / n va r nm nt/ n.自然環(huán)境
furniture / f :n t (r)/ n.（可移動的）家具
human / hju：m n/ n.人口
overlook / v l k/ v.忽略;未注意到
oxygen / ks d n/ n.氧;氧氣
單元單詞梳理
詞匯 音標 詞性和詞義
silent /'sa l nt/ adj.不說話的；沉默的
treat /tri t/ v.以...態(tài)度（方式）對待
wood /w d/ n.木；木頭
communicate /k mju:n ke t/ v.交流；溝通
species / spi i z/ n.種;物種
borrow /'b r / n.借;借用
product / pr d kt/ n.產(chǎn)品;制品
side /sa d/ n.一面
dig /d ɡ/ v.掘（地）；挖（洞）
單元單詞梳理
詞匯 音標 詞性和詞義
hole /h l/ n.洞；孔；坑
stick /st k/ n.棍;條
accident / ks d nt/ n.意外；偶然的事
character /'k r kt (r)/ n.文字
knowledge / n l d / n.知識;學問
spread /spred/ v.傳播
translation /tr nz le n/ n.譯文：譯本
greenhouse gas 溫室氣體
take in 吸收;攝入
單元單詞梳理
詞匯 音標 詞性和詞義
be made of 由…制成
come from 來自
for example 例如;譬如
look around 環(huán)視;環(huán)顧;四下察看
to begin with 首先;第一點
communicate with 與......溝通
call on 號召;動員;要求
according to 據(jù)(…所說);按根據(jù)(...報道)
by accident 偶然;意外地
02
單元詞形變換
單元詞形變換
branch n . 樹枝 → branches n . 樹枝 (pl.)
root n . 根；根莖 → root v. 生根
convenient adj.便利的； 方便的→ convenience n. 便利→inconvenient adj. 不方便的
create v. 創(chuàng)造 → creator n. 創(chuàng)造者→ creation n. 創(chuàng)作→creative adj. 有創(chuàng)造力的→ creatively adv. 有創(chuàng)造力地
environment n. 自然環(huán)境 →environmental adj. 環(huán)境的
human n. 人→human adj. 人的；通人情的 →humans n. 人(pl.)
單元詞形變換
silent adj. 沉默的；不說話的 → silence n. 沉默 →silently adv. 沉默地
treat v. 以...態(tài)度對待 → treatment n. 對待；治療
wood n. 木頭 → wooden adj. 木質(zhì)的
communicate v. 交流；溝通 → communication n. 溝通；交流
product n. 產(chǎn)品；制品 → produce v. 生產(chǎn)；制造→ production n. 生產(chǎn)
dig v. 掘地；鑿→ dug, dug 過去式； 過去分詞
stick n. 棍；條 v. 粘貼；粘住→stuck，stuck 粘貼 過去式； 過去分詞
單元詞形變換
accident n. 意外；偶然的事 → accidental adj. 意外的→ accidentally adv. 意外地
character n. 文字 → character n. 特點；品質(zhì)
knowledge n. 知識；學問 → knowledgeable adj. 知識淵博的
spread v. 傳播 → spread; spread 過去式；過去分詞
translation n. 譯文；譯本→ translate v. 翻譯→ translator n. 翻譯者
詞匯練習
一、根據(jù)句意及首字母或漢語提示寫單詞完成句子。
1. A guide dog s________ a blind man's life yesterday.
2. It is c_________ for us to walk in the park at any time.
3. There is a lot of f ________ in the house, such as tables, chairs and beds.
4. Can you i_______ a world without trees
5.All the people went home________ ( 除 了) Mr. Wang, for he had to finish his work.
6.Look! The girl is putting a tree in a h________.
aved
onvenient
urniture
magine
except
ole
詞匯練習
7.We should write on both _______ ( 面 ) of the paper.
8.—Lisa,could I _________ (借用)your computer
—Of course you can.Here you are.
9.The company sells its p_________ around the world.
10.The discovery was made by _________ (意外).
11.Kate felt excited to see a flock of sheep walking _________ (橫過)the street.
sides
borrow
roducts
accident
across
詞匯練習
12.The use of computers _________ (傳 播) rapidly during that period.
13. _________ (多虧)my English teacher,my spoken English is better now.
spread
Thanks to
詞匯練習
二、用括號中所給單詞的正確形式填空。
1. It is ____________ (convenience) for people to live in a city.
2.The_______________(environment) problems will become more serious if we don't do anything about them.
3.We should____________(treatment) people around us in a caring and understanding way.
4.Jack is one of the most _______________ (knowledge) students in our class.
convenient
environmental
treat
knowledgeable
詞匯練習
5.The terrible traffic _____________ (accidental) shocked us all.
6.The living room was full of __________ (wood) furniture.
7.In the past, people _______________ (communication) with each other by writing letters.
8.Emma ___________ (creative) a good impression on people because she smiles a lot.
accident
wooden
communicated
creates
03
單元短語梳理
單元短語梳理
1.吸收；攝入 take in
2.溫室氣體 greenhouse gas
3.首先；第一點 to begin with
4.來自 come from
5.環(huán)視；環(huán)顧；四下察看 look around
6.由……制成 be made of
7.例如；譬如 for example
單元短語梳理
8.事實上；實際上 in fact
9.產(chǎn)生氧氣 produce oxygen
10.砍伐森林 cut down forests
11.傷害樹木 harm trees
12.為……提供…… provide sb. with sth./ provide sth. for/ to sb.
13.與……溝通 communicate with
14.號召；動員；要求 call on
單元短語梳理
15.用……來做某事 use…to do
16.互相求助 ask each other for help
17.從……借 …… borrow... from ...
18.紙的雙面 both sides of paper
19.森林友好型產(chǎn)品 forest-friendly products
20.據(jù)(……所說):按(……所報道) according to
21.偶然；意外地 by accident
單元短語梳理
22.迄今為止 so far
23.追溯到 date back to
24.泡茶的藝術(shù) the art of making tea
25.傳遍全國各地 spread across the country
26. 以……而聞名 be/become known as ...
04
單元句型梳理
單元句型梳理
1. From the deepest forests to our towns and cities, trees are all around us.
從最深的森林到我們的城鎮(zhèn)和城市，樹木無處不在。
2. We share our world with trees.
我們與樹木共享這個世界。
3. She is kind to everyone and very patient with people.
她對每個人都很好，對人很有耐心。
4. They are our silent friends, but we often overlook them.
它們是我們的無聲朋友，但我們常常忽視它們。
單元句型梳理
5. To begin with, forests are a safe place for animals, insects, and plants to live.
首先，森林是動物、昆蟲和植物生活的安全場所。
6. Trees make our lives more convenient.
樹木使我們的生活更加方便。
7. Just look around your room. A lot of the furniture is made of wood.
看看你的房間，很多家具都是木頭做的。
8. Trees do so much for us. We can't imagine a world without them.
樹木為我們做了很多。我們無法想象沒有它們的世界。
單元句型梳理
9. However, humans are not treating trees in a kind way.
然而，人類并沒有善待樹木。
10. We are polluting the water and the air, and this harms trees.
我們污染了水和空氣，這損害了樹木。
11. We need to do more to protect trees and save our planet.
我們需要做更多的事情來保護樹木和拯救我們的星球。
短語句子練習
一、根據(jù)漢語意思完成句子，每空一詞。
1.沒關(guān)系。我會找別人替他去。
It doesn't matter. I'll ask __________ ______to go instead of him.
2.人們砍了太多樹來做課桌、椅子、筷子等。
People ____ _______too many trees to make desks,chairs,chopsticks and so on.
3.我們學校在洗手間為我們提供洗手液。
Our school _________ liquid soap(洗手液)for us in the washroom.
someone else
cut down
provides
短語句子練習
4. 我和莉莉決定明天早上在 校門口碰面。
Lily and I decided to ______ ____ at the school gate tomorrow morning.
5. 看 !他們在照料那棵樹。他們在給它澆水。
Look!They are _______ _____ _____ the tree. They are watering it.
6 .國防教育為了保衛(wèi)我們的祖國，我們應(yīng)該共同 抗擊敵人。
To safeguard our motherland,we should ______ ________ the enemies together.
meet up
taking care of
fight against
短語句子練習
7. 所有這些化石都可以追溯到1.83億年前。
All of the fossils can ______ ______ _____183 million years ago.
8. 這本書在全球傳播，因為它很有趣。
The book ________ _______ the world because it's really interesting.
9. 這款美味的果汁是由蘋果、葡萄和橙子制 成的。
This delicious juice _______ _______ _______apples, grapes and oranges.
spreads across
date back to
is made from
05
單元語法梳理
單元語法梳理
現(xiàn)在進行時的語法要點
1、現(xiàn)在進行時的使用情況。
（1）表示現(xiàn)在(說話時)正在進行或發(fā)生的動作。
e.g. What are you reading now 你在讀什么
Look! The bus is crossing the bridge.看！這輛公共汽車在過橋.
（2）表示當前一段時間內(nèi)的活動或現(xiàn)階段正在進行的動作。
e.g. I'm writing a novel at present.眼下我正在寫一部小說.
They are working in a factory these days.他們這幾天正在工廠勞動.
（3）有些動詞,如come、go、leave、arrive、begin、start 等的現(xiàn)在進行時可表示將要發(fā)生的動作。
e.g. We are leaving on Saturday.我們星期六動身。
單元語法梳理
2. 現(xiàn)在分詞的變化規(guī)則
變化規(guī)則 示例
大多數(shù)動詞后直接加-ing do—doing sing—singing
以不發(fā)音的e結(jié)尾的動詞,去e,再加-ing take—taking ride-riding
以重讀閉音節(jié)結(jié)尾,且末尾只有一個輔音字母,先雙寫該輔音字母,再加-ing sit—sitting begin—beginning
以ie結(jié)尾的動詞,變ie為y,再加-ing lie—lying tie-tying
以er結(jié)尾的動詞,如果是重讀音節(jié)結(jié)尾,先雙寫r,再加-ing;如果不是重讀音節(jié)結(jié)尾,就直接加-ing prefer—preferring water—watering
單元語法梳理
3、現(xiàn)在進行時的句式結(jié)構(gòu)。
肯 定 句 ：主語+is/am/are +doing+其它.
否 定 句 ：主語+is/am/are+not+doing+其它
一般疑問句：Is/Are/Am+主語+doing+其它
答語：Yes,主語+am/is/are./ No,主語+am not/isn't/aren't.
單元語法梳理
is am are
主語 第三人稱單數(shù) 第一人稱單數(shù) 第二人稱及第一三人稱復(fù)數(shù)
肯定式 She is watching TV. I am watching TV. You are watching TV.
否定式 She isn’t watching TV. I am not watching TV. You are not watching TV.
疑問式 Is she watching TV Are you watching TV Are you watching TV
簡略回答 Yes,she is./No,she isn't. Yes,I am./No,I'm not. Yes,we are./No,we aren't.
單元語法梳理
4、現(xiàn)在進行時的常見時間狀語
表示具體現(xiàn)在的時間狀語 ：
now 現(xiàn)在，right now現(xiàn)在，at this moment/at the moment 此刻
e.g. She's cooking dinner right now.她現(xiàn)在正在做晚飯。
I'm studying now.我現(xiàn)在正在學習。
They are discussing the plan at this moment.他們此刻正在討論計劃。
動詞作為提示詞的時間狀語 ： look 看，listen 聽
e.g. Look! The children are playing football.看！孩子們正在踢足球。
Listen! The birds are singing.聽！鳥兒們正在唱歌。
單元語法梳理
表示當前這個階段的時間狀語
these days 這些天 ，at present 目前，currently 目前
e.g. We're making model planes these days.這些天我們在做模型飛機。
單元語法梳理
5. 不能用于現(xiàn)在進行時的動詞 1 、存在狀態(tài)類動詞 be, stay, remain 等
2 、表示“擁有，屬于 ” have, own, belong to, possess, consist of 等
2 、心理狀態(tài)和情感類動詞 like, dislike, love; hate 等
3 、認知類動詞 think, believe, want,mind,know,understand,wish,agree 等
3 、系動詞類 seem, taste, turn, remain,appear,look,sound,feel 等
4 、瞬間動詞類 accept, refuse, receive;decide;promise 等
語法練習
一 、單項選擇。
1．It often ________ here in summer. It is ________ now.
A．rains; raining B．rain; rainy
C．rainy; raining D．rains; rains
2．Listen! Someone ________ in the room.
A．singing B．sing C．is singing
3．Look! Jenny ________ badminton with her teacher, Miss Wang.
A．playing B．play C．plays D．is playing
A
C
D
語法練習
4．The Smith family ________ Quanzhou on holiday tomorrow afternoon.
A．left for B．leave for C．a(chǎn)re leaving for
5．—How time flies! Our junior high ________ to an end.
—I can’t forget the happy time we have spent together.
A．comes B．came C．was coming D．is coming
6．He is a great writer and he ________ a new book these years.
A．wrote B．is writing C．will write
C
D
B
語法練習
二、完成句子
1．They often play football in the playground.（用now改寫句子）
They _____ ________football in the playground ______ .
2．Sally is watching TV now. (對劃線部分提問)
_______ is Sally_______now
3．They are using crayons to color the card. (改為一般疑問句)
______they______ crayons to color the card
are playing now
What doing
Are using
/ /
06
話題寫作講解
話題寫作講解
請以“Tree Planting Day”為題，根據(jù)要點提示，寫一篇英語短文描述一次植樹活動并呼吁同學們保護樹木。 要點提示：
1.簡單介紹樹木的作用；
2 . 描述同學們植樹過程中的2-3個畫面 (挖坑、挑水、栽樹……);
3.呼吁同學們保護樹木。
要求：80詞左右；要點齊全、語言流暢、語句通順。
Tree Planting Day
________________________________________________________________________________________________________________________________________
話題寫作講解
1. 體裁： 記敘文；
2. 人稱： 以第一人稱為主；
3. 時態(tài)： 以一般過去時和一般現(xiàn)在時為主。
4. 寫作內(nèi)容：開頭點明在植樹節(jié)組織環(huán)保團隊在學校操場種樹這一事件。
中間詳細描述了種樹的具體步驟，包括搬運樹苗到空地、挖坑、放苗、系繩固定以及澆水等過程。接著強調(diào)樹木對我們的重要性，如提供木材（用于制作各種物品）、有助于對抗污染等。最后呼吁身邊的人一起保護樹木。
寫作思路點撥
話題寫作講解
開始：點題，交代植樹節(jié)組織植樹
中間：描述了種樹的具體步驟，強調(diào)樹木對我們的重要性
主題：植樹節(jié)植樹
最后：最后呼吁身邊的人一起保護樹木
We organized the environmental team to plant trees ....
As we all know, trees are important to us....Additionally, ...Trees also help...As a result, they ...First of all, we....Finally, we ...
It's hard to imagine a world without trees. So let's call on everyone around us to protect them！
文章結(jié)構(gòu)
話題寫作講解
Tree Planting Day
We organized the environmental team to plant trees in our school playground on 12, March—Tree Planting Day.
As we all know, trees are important to us. We cannot live without trees because they provide us with wood. Additionally, many of the things in our daily life come
from trees, such as paper and pencils. A lot of furniture is made of wood as well. Trees also help fight against pollution. They take in harmful gases and produce oxygen.As a result, they keep the air cool and clean.
【范文賞讀】
話題寫作講解
On Tree Planting Day, we planted trees together.First of all, we carried the saplings to empty land.Then, we dug some holes and put the saplings in them. After that, we tied strings to fasten the saplings. Finally, we watered them as carefully as we could.
It's hard to imagine a world without trees. So let's call on everyone around us to protect them！
Thanks!
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