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1、第二課時(shí)Section A (3a3b)Unit 13Were trying to save the earth! harmful形容詞，意為“有害的”。常用于短語(yǔ)be harmful to中，意為“對(duì)有害”。eg：It is generally accepted that smoking is harmful to our health.吸煙有害健康，這是大家公認(rèn)的?！就卣埂縣arm作動(dòng)詞，意為“傷害；損害”；作名詞，意為“危害；傷害；損害”。eg：It wouldnt do him any harm to work a bit harder.工作努力點(diǎn)對(duì)他沒(méi)什么害處。There was a

2、 traffic accident in this street， but no one was harmed.這條街上發(fā)生了交通事故，但沒(méi)有人受傷?！癷n the last/past一段時(shí)間”構(gòu)成的表示時(shí)間的介詞短語(yǔ)，意為“在過(guò)去的(時(shí)間)里”，常與現(xiàn)在完成時(shí)連用。eg：The company has grown rapidly in the last five years.這家公司近五年來(lái)迅速地發(fā)展壯大。 too.to.意為“太而不能”。too為副詞，后接形容詞或副詞的原級(jí)；to為不定式符號(hào)，后接動(dòng)詞原形。eg：He is too young to go to school.他太小了，不能

3、上學(xué)。重點(diǎn)詞組歸納a bowl of一碗cut off切下；切斷not only.but also不但而且no longer不再at the top of在頂部或頂端the food chain食物鏈in fact事實(shí)上such as例如so far到目前為止 一、根據(jù)句意及漢語(yǔ)提示完成單詞。1 You will be punished if you break the (法律)2 I think it is a (科學(xué)的) way to solve the problem.3 Dont be (殘酷的) to animals.Theyre our good friends.4 Pollute

4、d air and water are (有害的) to peoples health.5 More and more robots are used in the (工業(yè))lawscientificcruel harmful industry 二、根據(jù)句意及漢語(yǔ)提示完成下列句子，每空一詞。6 Theres snow (在頂部) the mountain.7 (到目前為止) we have planted more than 2， 000 trees.8 Its very important to keep the balance of (食物鏈) in the ocean ecosystem

5、.9 (事實(shí)上)， she is only six years old now.10 When was the telephone (切斷)?at the top ofSo far the food chainIn fact cut off 三、單項(xiàng)選擇。( )11.The train travelled fast for us to see much outside the window.(2016，沈陽(yáng))A quite Bvery CtooDso( )12.What film do you like best?The Martian.It shows a lot of imaginatio

6、n， has a sense of humor.(2016，連云港)A too；to Bneither；nor Ceither；or Dnot only；but alsoCD ( )13.Look！The factory is sending out smoke.The government should do something to stop it.A nice Bharmful Cvaluable Dserious( )14.The number of the students in this international school by 1， 000 since last year.

7、A increase Bincreases Chas increased Dhave increasedBC 四、從方框中選擇合適的選項(xiàng)補(bǔ)全對(duì)話。(其中有兩項(xiàng)多余)A：Hi， Mary！I didnt see you yesterday.15. B：Oh， I went to the cinema and saw a film.A：16. B：Its about animals.A：17. B：It was wonderful.But it also made me very sad.A：Did you learn a lot from the film?B：18. I learned a l

8、ot about the endangered animals.We cant see most of them on earth today.A：Sorry to hear that. CAFB B：I think we should do something to save them.Lets join the Love Animal Club first.A：19. I think the club must be helpful and interesting.B：I think so.A What is the film about?B Yes， I did.C Where did you go?D Thats a good idea.E How are you feeling now?F How do you like the film?G What should I do?D