祈使句的表达及用法山东省高密第四中学李希忠e-mail:gmlxzh@163.com邮编：261514我是祈使句，想认识我吗？那就跟我来吧！一、定义：用于表达命令、请求、建议、警告、禁止等的句子叫做祈使句，常称为命令句。如:Lookattheblackboard!看黑板！Keepoffthegrass.勿踏草坪！二、表达形式肯定式:1.一般情况：Do型(即:动词原形(+宾语)+其它)。如:Gostraighton!直着走。2.Be型(即:Be+表语(名词或形容词)+其它)。如:Bequietplease!请安静3.Let型(即:Let+宾语+动词原形+其它)。如:Let’shavearest.（包括说话者）让我们休息一下。Letushavearest。（不包括说话者）让我们休息一下。否定形式:1.Do型和Be型的否定式都是在句首加don't构成。如:Don'tlookoutofthewindow.不要向窗外看。Don'tbelateforschool!上学不要迟到!2.Let型的否定式一般采用:“Let+宾语+not+动词原形+其它”。Let’snotplayinthestreet.让我们不要在街上玩耍。3.在公共场合的提示语中，否定祈使句常用No+名词/V-ing结构，表示“禁止做某事”。如：NoSwimming!禁止游泳。Nophotos禁止拍照三、祈使句的反意疑问句祈使句的反意疑问句一般用willyou,但是以let’s开头时一般用shallwe，当分开时后仍用willyou.如：Don’tleavehere,willyou?Let’sgototheGreatwalltomorrow,shallwe?其实呢，祈使句就这么简单，下面自己测试一下吧！一、选词填空。(单词可重复使用)bepleasedon’tnohavelet’s1.Pleasespeakslowly.___________talksofast.2._________quiet,please,thebabyissleeping.3._________sitstraight.4._________goshoppingnow.5.__________spitting.6.__________talking,classbegins.7.__________agoodtime!8.__________talktoyourmumlikethat!9.smoking!10.notplayfootballinthestreet!二、写出下列祈使句的反义疑问句1.Let’sgotoschool,____________?2.Don’tmakesuchnoise,_____________?3.Teacher,letushavearest,_____________?4.Let’sgotogether,____________?5.Leteachmandecideforhimself,_____________?6.Letusgotogether,_____________?7.Comeandjoinus,____________?8.Don’tfightwithothers,___________?9.Becareful!?10.Dnot’belateagain,?三、把下面的句子变成否定形式1.Bequiet!2.Let’splaycomputergames!3.pleasetalkinthelibrary!4.Turnlefthere!5.Walkonthegrass!6.Tom,hurry!7.Pleasestandinline!8.Letusgoshopping!9.Stopsinging,please!10.四、单项选择1._______smokehere,dad.Smokinghasbeenbannedinpublicplaces.A.Don’tbeB.Don’tC.NottobeD.Benot2._______playfootball,shallwe?A.LetB.Let’sC.LetusD.Don’t3.parking!A.Don’tB.PleaseC.NotD.No4.＿＿buyyourticketfromaticketmachine.Therearelotsofpeoplethere.A.NotB.nottooC.Don’tD.Don’tto5.Let’stabletennisinTuesdaymorning.A.toplayB.playingC.playedD.play6.Pl