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1、Unit3Couldyoupleasecleanyourroom?SectionA3Grammarfocus-4cRevision根据所学内容，写出下列短语。叠衣服做菜用某人的电脑扔垃圾铺床扫地熬夜生某人的气带……出去散步foldone’sclothesdothedishesuseone’scomputertakeouttherubbishmakethebedsweepthefloorstayoutlatebeangrywithsb.takesb.forawalk打扫客厅在……上工作过来做家务搭
2、车cleanthelivingroomworkon…comeoverdothehouseworkgetarideCouldIgooutfordinnerwithmyfriends?Sure,thatshouldbeOK.Couldwegetsomethingtodrinkafterthemovie?No,youcan’t.Youhaveabasketballgametomorrow.Couldyoupleasetakethedogforawalk?OK,butIwanttowatchonesho
3、wfirst.Couldyoupleasetakeouttherubbish?Yes,sure.阅读下列句子，观察问句的用法及回答。KeysentencestructuresCouldyou（please）+V-原形？表示委婉地提出请求1.Couldyoupleasecleanyourroom?Yes,sure./Ofcourse./Certainly./Allright.2.Couldyoupleasedothedishes?Sorry,Ican’t.Ihavetodomyhomework.—
4、Peter,couldyoupleasetakeoutthetrash?—Sure,Mom. —Couldyoupleasedothedishes?—Sorry,Ican’t.Ihavetodomyhomework.重难点点评表示请求帮助或请求允许的疑问句中，常用could代替can，表示礼貌，委婉或不确定，而can则不具备这些语气。这时不能把could看作can的过去式。以上两句中用could是为了表示礼貌的请求。表示请求帮助或请求允许时，除了can,could之外，还可以用may，句子的表达
5、方式也有不同，可以用不同的方式来表示同一个概念。例如：①Could/Can/MayIuseyourcarforaday?②IwonderifIcoulduseyourcarforaday?同意可说Yes或Sure或Certainly，还可说Yes,(do)please.或Ofcourse.(youmay/can).或Goahead,please.或That’sOK/allright;不同意，可以说I’msorryyoucan’t.或I’mreallysorry,butIhavetouseitto
6、day.要避免说No,youcan’t.这样不礼貌。否定回答通常用委婉语气。③DoyoumindifIuseyourcarforaday?作回答可以说Nevermind./Notatall.表“不介意”。不能用Yes./Sure./Ofcourse./Certainly.等。无论肯定还是否定应答中，要避免使用could，要用can或may。因为应答须用确定的语气。而could在表请求的问句中是为了表示礼貌或委婉语气，用在应答中则成了不确定语气，与情理不符。所以应答中不说Yes,youcould.
7、或No,youcouldn’t.而要说Yes,youcan.或Sorry./No,youcan’t.—CouldIpleaseuseyourcomputer?—Sorry,I’mgoingtoworkonitnow. —Well,couldIwatchTV?—Yes,youcan.CouldI/youplease…？表示一种有礼貌的请求或提议，其后连接原形动词，比Canyou/I…？语气更委婉。类似句型有：Wouldyoulike+sth./todosth.?MayI+dosth.?Shallw
8、e+dosth.?Wouldyoumind+sth./doingsth.? What/Howabout+sth./doingsth.?肯定回答有Sure./Ofcourse./Certainly./OK./Great./Well./Goodidea./Iagree.等。否定回答有Sorry…/No,youcan’t.等。MakeupdialoguesusingthesentencesinGrammarFocuswithyourpartner.A:Couldyoupleasetakethedogf
