Unit 13　We're trying to save the earth!第一课时　Section A(1a～2d)1．litter(1)litter作动词，意为“乱扔”，相当于throw。如：Don't litter.勿乱丢杂物。(2)litter作名词，意为“垃圾；废弃物”，是不可数名词，相当于rubbish。如：Litter covered the cinema floor after the film.电影结束后，电影院的地上满是垃圾。2．advantageadvantage作可数名词，意为“优点；有利条件”。【拓展】(1)advantage的反义词是disadvantage，意为“缺点；不足”。如：The situation put us at a serious disadvantage.形势使我们处于非常不利的地位。(2)the advantage of意为“……的优点/优势”。如：The advantage of a good education are very great.受到良好教育的益处很大。3．costcost既可以用作动词，意为“花费”；又可以用作名词，意为“花费；价钱”。【辨析】spend，take，cost与pay(1)spend意为“花费”，主语只能是人，指某人“花费(时间、金钱)”，常用于spend…on sth.或spend…(in)doing sth.句型中。如：You really shouldn't spend so much effort on it.你真不该在这件事上花费这么多精力。(2)take意为“花费时间或金钱”，常用于It takes sb.much time/money to do sth.句型中。如：It took me 2 hours to finish my homework.我花了两小时做作业。(3)cost意为“花费(金钱)；值”，主语只能是物或事情。cost 可以带双宾语，但cost没有被动语态。如：How much do the vegetables cost？这些蔬菜值多少钱？(4)pay意为“花费”，主语只能是人，指为买到的东西付钱，与介词for连用，句型为sb.pay money for sth.如：My brother paid 20 yuan for the toy.我弟弟花了20元买那个玩具。,　　01　　基础过关Ⅰ.根据句意及汉语提示填写单词。1．We are not supposed to use plastic(塑料的) bags while shopping.2．Tom's uncle is a fisherman(渔民)．He goes fishing twice a week.3．There are many kinds of living things in the bottom(底部) of the sea.4．The villagers used to burn coal(煤) to get warm.5．Don't litter(乱扔) waste things everywhere.Ⅱ.用括号内所给单词的适当形式填空。6．There is a wooden(wood) table in the middle of the room.7．There used to be many fishermen(fisherman) in the village.8．Everyone in the class is asked to play a part in keeping(keep) the classroom clean.9．Can you tell me the machine's advantages(advantage)?10．Her actions(act) tell us a lot about her purpose.Ⅲ.英汉互译。11．这条河被严重污染了。The__river__was__badly__polluted.12．我们齐心协力就能带来变化，创造更加美好的未来。Our__actions__can__make__a__difference__and__lead__to__a__better__future.13．There will be a party in this room.Please clean it up after the party.这个房间里将举行一个聚会。请在聚会后把房间打扫干净。14．Planting more trees can cut down air pollution.__种植更多的树木可以减轻空气污染。,　　02　　能力提升第 1 页


Ⅳ.口语交际。情景七选五　请阅读下面一段对话，根据其情景，从方框内七个选项中选出能填入对话的五个选项。Bob：Good morning，Kim.Kim：Good morning.Bob：__15__ It can save a lot of time.Kim：Well，I prefer walking to driving a car.Bob：Mm，it's good for health and the environment.Kim：Yes.The environment is very important for us.__16__Bob：Yeah，right.What else can we do?Kim：For example，we'd better not buy clothes made of animal fur.Bob：I agree with you.__17__ Anything else?Kim：Don't use plastic bags.Bob：__18__Kim：Yes，they are really useful for us.But they pollute our environment.Bob：__19__Kim：We can use cloth bags instead of plastic ones.Bob：That's a good idea.Oh，it's late.I must go now.See you!Kim：See you! A．Everyone should do something for it.B．Why don't you drive to work?C．It's useless for protecting plants.D．It's a good way to protect animals.E．But don't you think they are really convenient in our daily lives?F．Why do you go to work in a car?G．How can we carry things after shopping then?15．B　16.A　17.D　18.E　19.G第 2 页