深圳牛津英語(yǔ)七年級(jí)英語(yǔ)下冊(cè) 時(shí)

1、Unit 4 Save the trees (第一課時(shí))一、核心詞匯1. save v.拯救2. pine n.松樹3. discuss v.討論4. branch n.樹枝5. root n.根6. fight v.與作斗爭(zhēng)7. against v.反對(duì)8. example n.例子9. harmful adj.有害的10. gas n.氣體11. produce v.產(chǎn)生12. oxygen n.氧氣13. major adj.主要的14. convenient adj.方便的15. furniture n.家具16. imagine v.想象17. disease n.疾病18. dig

2、 v.挖19. hole n.洞20. carry v.搬21. container n.容器二、重點(diǎn)短語(yǔ)1. fight against對(duì)抗，與.作斗爭(zhēng)2. help sb. do sth. 幫助某人做某事3. know about知道，了解4. in many ways在很多方面，多角度5. take in 吸收，理解6. come from 來自（be from）7. for example 例如8. in fact 事實(shí)上，確切地說9. look around 環(huán)顧四周10. (be) made of 由制成11. millions of 大量的12. (be) good for 對(duì)有

3、好處三、基礎(chǔ)知識(shí)點(diǎn)1.If I plant this seed in the ground,will it become a pear tree, Hi?(1)if 引導(dǎo)條件狀語(yǔ)從句時(shí)，意為“如果”。主句（包括祈使句和含有情態(tài)動(dòng)詞can，may，must等的句子）用一般現(xiàn)在時(shí)，從句也用一般現(xiàn)在時(shí)；主句用過去時(shí)，從句也用過去的某種時(shí)態(tài)；如果主句是一般將來時(shí)，從句要用一般現(xiàn)在時(shí)表示將來。Eg: We will go out if it is fine tomorrow. You must see a doctor if you are ill.(2) a不定冠詞，意為“一（個(gè)）”，用在以輔音音素開

4、頭的單數(shù)可數(shù)名詞前；在以元音音素開頭的單數(shù)可數(shù)名詞的前面要用不定冠詞an。不定冠詞a/an常放在單數(shù)可數(shù)名詞前，表示一個(gè)不確定的事物或人。其用法如下：第一次提到某人或某物時(shí)，用不定冠詞。Eg: You'd better go to see a doctor.表示某一類中的任何一個(gè)，是泛指。Eg: A dog is a useful animal.表示“一”的數(shù)量，但數(shù)的概念沒有one強(qiáng)烈。Eg：I have a pen, a pencil and two books.用在表示時(shí)間、重量、速度、價(jià)格等名詞前，意為“每一”。Eg: We have six English classes a

5、 week.2. Look around this room.與look相關(guān)的短語(yǔ)：look for尋找；look over仔細(xì)檢查，翻閱；look after照顧；look up抬頭看3. A lot of furniture is made of wood.很多家具都是由木頭制成的。(be) made of(看得出原材料)=(be) made from(看不出原材料)意為“由.制成”。如：The chair is made of wood. 這把椅子是由木頭制成的。Paper is usually made from wood. 紙通常由木頭制成。4. But we cut down mi

6、llions of trees every year.但每年我們都會(huì)砍伐數(shù)百萬的樹木。millions of意為“數(shù)以百萬計(jì)；大量的”。如：Millions of people around the world learn English.全世界無數(shù)人在學(xué)習(xí)英語(yǔ)?！就卣埂浚篽undreds of 數(shù)以百計(jì)的，成千上萬的；thousands of數(shù)以千記的，成千上萬的；tens of thousands of 數(shù)以萬計(jì)的；hundreds of thousands of數(shù)以十萬記的注意：hundred，thousand，million，billion等前面有具體的數(shù)詞時(shí)，其后不加-s，也不帶介詞

7、of。Eg: two hundred 200 5. She can skate at a very high speed because sh practises a lot.Practise及物動(dòng)詞，意為“訓(xùn)練，練習(xí)”。賓語(yǔ)可以是名詞、代詞或動(dòng)名詞。Eg: You must practise speaking English every day.6. As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing.The number of意為“的數(shù)量”。Eg:T

8、he number of the students in our class is 50.【拓展】The number of的數(shù)量后接復(fù)數(shù)名詞，但謂語(yǔ)動(dòng)詞要用單數(shù)形式常跟large，small等詞作表語(yǔ)The number of the students in our school is 2000.A number of大量；許多，相當(dāng)于many接復(fù)數(shù)名詞作主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞用復(fù)數(shù)形式Number前可加small，large，huge等表示程度A number of students are playing football.7. .but the speaker did not stop sp

9、eaking until twenty past twelve.Not. Until.意為“直到才”。主句的動(dòng)詞一般是非延續(xù)性動(dòng)詞，它所表示的動(dòng)作直到until所表示的時(shí)間才發(fā)生。Eg：You cannot leave until your work is finished.知識(shí)練習(xí)：1、 根據(jù)句意及首字母提示完成單詞。1. Today, we are going to d_ the topic“Are dogs peoples friends?”2. Look at the dog. It is hurt. Shall we s_. It?3. The b_ of the trees con

10、nect with each other and pass water and food underground.4. You mustnt park your car here. It is a_ the law.5. The workers are f_ against the decision to reduce their pay.6. I cannot i_ life without trees.7. Soft drinks are h_ to your health.8. The f_ in the room is quite old.2、 選出可以替換劃線部分的選項(xiàng)。1. We

11、can produce fresh water from the ocean now.A. get B. work C. make D. take2. Life is more convenient than before.A. easier B. harder C. the easiest D. the hardest3. Trees are important because they can take in harmful gases.A. make B. absorb C. stop D. put4. You can do many things at home. For exampl

12、e, you can do some housework.A. For instance B. For more C. For ever D. For you5. In fact, I didnt listen to our teacher carefully.A. Really B. Actually C. Exactly D. Certainly3、 單項(xiàng)選擇1. The doctor gave him some pills to _ the pain.A. take off B. take in C. take on D. take away2. Do some sports every

13、 day. It will help you keep _.A. healthy B. healthily C. kindly D. excitedly3.There are _ people here in our city. Actually, there are _ people here in our city.A. millions of; three million B. millions of; millionsC. millions of; three million of D. million of; three million of4. What time is it no

14、w? It is 20:00. I think we should stop _ first.A. having supper B. have supper C. to have supper D. to having supper5、 I bought _ furniture. Really? What _? A. a new; is it made of B. a new; does it made ofC. a new piece of; is it made of D. a new piece of; does it made of6、 Look at this old bridge!

15、 It is made _ stones. A. from B. of C. into D. up7、 I _ the swimming club if you _ it. A. join; join B. will join; join C. join; will join D. will join; will join8、 He heard someone calling his name, so he stopped and _. But he couldnt see any one. A. looked around B. looked up C. looked into D. loo

16、ked for9、 We cant live without trees. They make our lives _. I agree. We should stop people _ trees. A. convenient; to cut down B. conveniently; to cut down C. convenient; cutting down D. conveniently; cutting down10、 the little dog helps his owner _ many ways _ his daily life. A. in; at B. on; in C

17、. in; in D. on; on4、 用所給單詞的適當(dāng)形式填空。1. Trees are important in our (day) lives?2. There are (many) people in this hall than that one.3. We all know that smoking is (harm) to our health.4. Air is a mixture(混合物) of (gas).5. Mr. Green lives in a (convenience) life.6. Tim has been a fire (fight) for five y

18、ears.7. How does a fish (breath) under water?8. Many plants died because of the water (pollute) .5、 完形填空 A Chinese man _1_ Cai Lun invented paper almost 2,000 years ago. He made paper _2_ wood. He then put all the paper together and made the paper _3_ a book. Now we still use wood to make paper. We

19、use a lot of paper every day. If we keep on _4_ so much paper, there will not be any trees left on the earth. If _5_ no trees, there will be no paper. Every day, people _6_ about 2,800 tons of paper. We use 17 trees to make one ton of paper. This means we are cutting nearly 48,000 trees every day. S

20、ince it _7_ more than 10 years for a tree to grow, we must start using _8_ paper now. So how can we save paper? We can use both sides of _9_ paper, especially when we are making notes. We can choose drinks in bottles instead of those in paper packets. We can also use cotton handkerchiefs(手帕) but not

21、 paper ones. When we go shopping, we can use fewer paper bags. If the shop assistant gives us a paper bag, we can save it and reuse it later. Everyone can help to save paper. If we all think carefully, we can help _10_ trees. But we should do it now, before it is too late. 1. A. call B. calls C. cal

22、led D. calling 2. A. from B. of C. into D. for 3. A. from B. of C. into D. for 4. A. waste B. to waste C. wasted D. wasting 5. A. there will be B. there are C. there was D. there wasnt 6. A. take in B. put on C. throw away D. put away 7. A. spends B. takes C. costs D. pays 8. A. many B. few C. fewer

23、 D. less 9. A. a B. a piece C. one piece D. many 10. A. protect B. protects C. protecting D. to protecting6、 閱讀理解Can trees talk? Yes - but not in words. Scientists have reason to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a will

24、ow tree (柳樹) attacked in the woods by caterpillars (毛毛蟲) changed the chemistry of its leaves and made them tasteless so that the caterpillars got tired of the leaves and stopped eating them. The even more astonishing, the tree sent out a special vapor- a signal causing its neighbors to change the ch

25、emistry of their own leaves and make themselves taste also terrible, too.Talking, of course, doesnt need to be always in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds and movements. Bees

26、 dance their signals, flying in certain patterns that tell other bees where to find nectar (花蜜) for honey. So shy shouldnt trees have ways of sending messages? 1、From the passage, which kind of leaves dont caterpillars eat? A. leaves lying on the ground. B. leaves having an unpleasant taste.C. leave

27、s bees dont like. D. leaves having an unfamiliar shape. 2、The willow tree described in the passage protected itself by _.A. growing more branches B. talking with birds and bees.C. changing its leaf chemistry D. shaking caterpillars off 3、According to the passage, the willow tree was able to talk with other trees by _.A. Waving its branches B. giving off a special smellC. dropping