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1、Unit3Couldyoupleasecleanyourroom?第三课时“单元语法单元语法精讲情态动词could的用法1.表示“过去的能力和可能性“。could为can的过去式,表示“过去的能力和可能性“时,其肯定回答和否定回答都用could。如:一CouldyoltplaybaskethallwhenyouWwere5yearsold?当你5岁时,你会打篮球吗?一Yes,Icould./No,Icouldn“t.是的,我会。/不,我不会。2.表示请求的问旬。could可用于表示请求的问句中,其表现形式有两种。QCouldyou(please)?表示恳求对方做某事。如:Couldyouple
2、asehelpmecleantheroom?你能帮我打担房间吗3)CouldI.?表示请求对方允许自己做某事。如:CouldIuseyourbike?我可以用你的自行车吗?3.表示请求的问句的回答。could表示请求时,其肯定回答和否定回答都不用could,肯定回答常用Certainly./Ofcourse/Yes,please./ItsOK./Allright等;否定回答常用Sorry,Imafraidnot./Tmsorry,youcant/Tmsorry,but./Ocoursenot.。如:一Couldyoupleasedoihedishesi请你活洗盔于好吗?一Sorry,Tmafr
3、aidnot.Ihavetodomyhomework,对不起,恐怕不行。我得做作业。一CouldIuseyourcomputer?我可以用你的电脑合?一Certainly.当然可以。I.单项选择。()1.一Couldyoupleaseletmegotothemoviesthisevening,Grandpa7?一.Butyouhavetocomebackbeforenine人.Sorry,IcantBTmsorryC.Yes,youcanD.No,Idont)2.Couldyoupleasetheclassroom7八.sweepB.sweepsC.sweepingD.tosweep)3.-一
4、Couldyoupleasewalkthedog?.havetodomyhomework.Yes,sureB.Sorry,IcantC.NoproblemD.Sorry,youcant)4.Couldyoupleaseitagain?AnotdoB.nottodoC.doingD.does)5.一CouldIgooutwithDave?门一Youhavetofoldtheclothes.A.YesvyoucantB.Yes,IcanC.Novyoucant.用所给词的适当形式填空。.Couldyou(Chelp)mewithmylessons2.Couldyou(make)mybed?7Tml
5、ate.3.Couldyouplease(clean)yourroom2.Couldwe(leave)atSeven?.一CouldIwatchTVnow?一Yes,you(could).亿.运用每一小题后的提示语回答下面问题。1.Q:Couldyoupleasecleanyourroom?(Sorry/dothedishes)人:2.Q:CouldIuseyourbicycle?(No/needittoday)人:3.Q:Couldyoupleasetakeouttherubbish2(Sorry/practicethepiano)人:4.Q:CouldIstayoutlate?(No/lookafteryoursister)人:5.Q:Could贲o霾斛g菅Se严蓁争y。尸了bed?锤予芽sSure)
