祈使句讲解及练习

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1、第七讲祈使句【观察一】请仔细观察下列例句，你能补全结论部分所缺的内容吗?1.Tidyupyourroom,Sam.2・Openthedoor,Anna.3.Becarefulwhencrossingtheroad・【结论一】或要求，要对方做某事或不做某事，带有祈使祈使句是表示向对方发出、提出语气的句子。主语为第二人称，但是常常被【观察二】请仔细观察下列例句。(A)1.Walkquickly,Tom!2.Comein,please!3.Openyourbooks!(C)1.Pmalittletired.Let'shavearest.2.Let'sgoshoppingto

2、gethe匚【结论二】(B)1-Beagoodboy,Tony.2.Bepolitewhenyouarethere.3.Becareful!(D)1.Don'tstandup.2.Don'tbelateagain,Jack.3.Don'tlethimgo!=Lethimnotgo!祈使句有肯定和否定两种形式。肯定式有三种常用句型:1.（+宾语）+其他成分；2.+表语（名词或）+其他成分；3.++其他成分；否定式有两种常用句型：1.+（+宾语）+其他成分2.++表语（名词或）+其他成分。【观察三】1.Pleaseturnoffyourphone.2.Comein,ple

3、ase.【结论三】在祈使句中，为了缓和语气，使表达更委婉、有礼貌，常常在或—加上O要记住，在英语口语中，当祈使句用来表达命令、要求时，用降调；当祈使句用来表达鼓励、请求，或者想使语气委婉一些，让人容易接受吋，通常用升调。【注意】：在公共场合的提示语中，否定祈使句常用“No+名词/V-ing形式”结构，表示“禁止做某事”。例如:NOPHOTOS!禁止拍照！Noparking!【课堂练习】一、选择最佳答案填空。)1.一PleasetoreturnmybookbyFriday.FlluseitonSaturday.-一Noproblem.Fllfinishreadingit

4、onThursday.A.don'tforgetB.nottoforget)2.lateagain,Mike!A.Don,tobeB.DoiftbeC・notforgetC.Notbe)3.Kelly,yourhomeworkheretomorrow・A.bringB・Brings)4.Please，theyrehavingameeting.A.notbesonoisyB.bequiteC.tobringC・mustifttalk)5.tomeetmeatthestation.Fllbewaitingthere.A.NottoforgetB.Notforget)6.I

5、fyouaretired,arest.A.haveB・having)7.mego.Itisveryimportantforme.A.DoletB.Letdo)8.Heisnothonest._believehim.B.DorftC.ForgetnotC.tohaveC.Doinglet二、A.Not)9.C.Tonotupearlytomorrow,oryoucan'tcatchthetrain.C.TogetA.GettingB.Get)10.inthestreet.It'sdangerous.A.NotplayB.Nottoplay)11.Pleasemesome

6、money,willyou?A.lendB.lendingC.Don'tplayC.borrow)12.Thefilmisabouttobegin.Pleaseseated.A.beB.areC.is)13.downtheradio.Thebaby5sasleepinthenextroom.A.TurningB.ToturnC.Turned)14.Lucy,thedoororsomeonewillcomein.A.closeB・closesC.notclose)15.andplayfootballinthestreetafterlunch・A.Let，snottogo

7、B・Let'snotgoC・Let'sdon'tgo用括号内所给动词的适当形式填空。1.It'sanimportantmeeting.(not,be)late.2(not,make)anynoise!Yourmotherissleeping.3.(not,speak)withyourmouthfulloffoodand-D.forgetnottoD.BenotD・bringingD・nospeakingD.Don'tforgetD.hadD.TodoletD.NottoD.GotD.Don'ttoplayD.borrowingD.beingD.Tur