Unit13We’retryingtosavetheearth【课前预习】1.水污染________________2.空气污染____________________3.噪音污染________________________4.一个有创意的大脑________________________5.开一个小店________________________6.更受欢迎的作品________________________7.给他人带来欢乐________________________【答案】1.waterpollution2.airpollution3.noisepollution4.acreativemind5.openasmallshop6.morepopularworks7.bringhappinesstoothers【自主学习】要求：阅读教材书103-104页内容完成下列句子。1.在环境方面我们已经看到了许多的改变。_______________________2.河流被工厂污染了_______________________________3.空气污染变的越来越糟糕。______________________________________4.人们应该更多乘坐公共交通工具。_________________________________________【答案】1.Wehaveseenmanychangesintheenvironment.2.Theriverispollutedbyfactories.3.Theairpollutionisgettingworseandworse.4.Peopleshouldtakepublictransportationmore.【合作探究】利用本单元学习的内容，结合你所在的城市或者乡镇，说说你们那里是否有环境问题，是什么问题，及什么原因造成的。然后提出可行的解决办法。【答案】这篇短文首先要介绍你所在城市存在有哪些环境问题，是谁造成的这些问题，然后提出解决这些环境问题的方法和措施，可以结合3a中列举的问题和前面学过的解决办法来完成Environmentalproblemsarebecomingmoreandmoreseriousallovertheworld.Soisourcity.Withthedevelopment,therearetoomanycarsonthestreetsinourcity.Carshavecausedairpollution.Blacksmokeandpoisonousgasaregivenoffbyfactories.Factoriesalsoputwasteintotheriver.Andwhereverwego,wecanfindrubbish.Nowmoreandmorepeoplehaverealizedtheseproblems.Ithinkthatgovernmentsshouldclosedownthefactoriesanddeveloplawstostoppeoplefromdrivingcarseveryday.Isuggesteveryoneinthistownshouldhelptocleanuptheriverandthestreets.Weshouldcalloneveryoneinthetowntothrowrubbishinthedustbins.Ihopetheproblemwillbesolvedinthenearfutureandourhomewillbecomebetterandbetter.【课堂反馈】1．You______bepolitetotheoldman.A.shouldB.can’tC.mightD.mustn’t【答案】A【解析】试题分析：句意“对老人应该有礼貌。”should“应该”；can't“不能”；might“可能”；mustn't“禁止，不许”。故选A。考点：考查情态动词。2.Finishyourhomeworkfirst,thenyou'llsurftheInternetforhalfanhour.A.canB.needC.beabletoD.may【答案】C【解析】试题分析：句意：先完成作业，然后你可以上网半小时。从句意看表允许，所以排除B，又由于是一般将来时，will后面接动词原形，can和may没有将来时，故选C。考点：考查情态动词。3.WhydoesLiuTaolookalldaylong?A.sleepyB.sleepC.tobesleepyD.sleeping【答案】A【解析】试题分析：句意：为什么刘涛整天看起来很困？look在本句中为系动词，所以后面通常跟形容词做表语；故选A。考点：考查形容词。4.Heisa___________student,andhealwayslistenstotheteachers___________.A.careful;carefulB.careful;carefullyC.carefully;carefullyD.carefully;careful【答案】B【解析】试题分析：句意：他是一个认真的学生，并且他总是认真听老师讲课。Carefully认真地，副词，用来修饰动词;careful认真的，形容词，做表语或修饰名词。第一个空修饰名词，第二个修饰动词听的方式，结合句意及结构，故选B。考点：考查形容词和副词的用法。5.---Whydidyoubuytwopairsofshoes?---Itwassohardtochoosewhichwas________,soItookthemboth.A.betterB.thebetterC.worseD.theworse【答案】B【解析】试题分析：句意：---你为什么买两双鞋子？---很难选择哪一双更好，所以我两双都买了。两者中更好的应用the+比较级。根据题意，故选B。考点：考查形容词的用法。6.---Oh,Mrs.King,yourdresslooksnice.Isitnew?---No,I______itsincetwoyearsago.A.hadB.boughtC.havehadD.havebought【答案】C【解析】试题分析：由since引导的时间状语从句或短语，主句用完成时，结构为have或has+过去分词，同时一般不用短暂动词，buy为短暂动词，故选C。考点：考查现在完成时。
