初中祈使句课件

祈使句祈使句的定义•祈使句表示请求、命令、建议等等。•谓语动词一律用原形。•句子中通常不用主语，句末用惊叹号或者句号。Turnleft!Turnright!Walkonthezebracrossing!Don’tsmoke!Nosmoking!Don’tparkyourcar!Don’teat!Don’tpicktheflowers!Goupstairs!ReadandobservethedifferenceTurnleft!Turnright!Pleasegoupstairs!Godownstairs!Walkonthezebracrossing!Don’tsmoke!Don’tplayfootball!Don’tparkyourcar!Pleasedon’teat!Don’tpicktheflowers!Drawtheconclusion(得出结论)祈使句的结构如下：(Please)+dosth.(Please)+Don’tdosth.肯定：否定：祈使句的句型Bequiet.Pleasehaveaseat.David,payattention.Don’tbeafraid.Pleasedonotmakeanoise.Alan,don’tbelate.1.动词+…2.Please+动词…3.人名+动词…肯定否定在动词前面加don’t否定祈使句句式详解1.肯定的祈使句（1）动词原形+其他Standup,please.=Pleasestandup.请起立。（2）Be+adj.Becareful!=Lookout!=Takecare!小心/当心！（3）Let's+动词原形Let’sgotoschooltogether.咱们一起上学去吧。祈使句句式详解2.否定的祈使句（1）Don't+动词原形Don'tstandup.别站起来。Don'tbecareless.别粗心。Don'tletthemplaywithfire.别让他们玩火。（2）Let's(letsb)+not+动词原形Let'snotsayanythingaboutit.对于这件事，咱们什么也别说。Letthemnotplaywithfire.别让他们玩火。祈使句句式详解3.祈使句谓语用何动词形式英语祈使句的谓语总是用动词原形。如：Bequiet!别说话!Comeearliernexttime.下次早点来。Haveagoodtime.愿你玩得痛快。Goandtellher.去告诉她吧。注：有时为了加强语气，可在动词前加do。如：Dobecareful.务请小心。Docomeontime.务必请准时来。祈使句句式详解4.关于以let开头的祈使句Let’seatouttonight.我们今晚出去吃饭吧。Letmehaveatry.我来试一试。Letmeshowyouhowtodoit.我来告诉你怎样做。Leteverymandohisbest.让每个人人尽其才。Letthemeatcookslowly.把肉用慢火炖。1.这类祈使句的否定式有两种形式。如：Let’snothurry./Don’tlet’shurry.我们不要太急。2.let后用作宾语补足语的动词要用原形，不能用带to的不定式。祈使句句式详解5.与please连用以使语气委婉为使语气委婉，通常将祈使句与please连用。Please可用于祈使句的句首(其后通常不用逗号)或句末(其前通常用逗号)。如：Pleasedon’tgetangry.请不要生气。Pleasedrivemoreslowly.请开得慢一点。Pleasecutmeapieceofcake.请给我切一块蛋糕。Pleasetrytobequiet.请设法保持安静。Pleaserepeatwhatyou’vejustsaid.请把你刚才说的话重复一遍。祈使句与反意疑问句一、基本原则若陈述部分为祈使句，反意问句通常用willyou,won'tyou,wouldyou等。如：Mailthelettertoday,willyou?今天就把信发掉，好吗?Trytobebackbytwo,won'tyou?设法两点之前回来，好吗?注：若陈述部分为否定式，则反意问句部分只用willyou。如：Don'tforgettoposttheletter,willyou?请别忘了寄信。有时根据语境的需要，反意问句也可以用canyou,can'tyou等：Givemesomecigarettes,canyou?给我些香烟，可以吗?Walkfaster,can'tyou?走快点，不行吗?祈使句与反意疑问句二、let型1.当祈使句为Let's…时：反意问句总是用shallwe。如：Let'sphonehernow,shallwe?我们现在就给她打电话，好吗?Let'sgotothecinematonight,shallwe?今晚咱们去看电影，好吗?2.当祈使句为Letus…时：若表示请求，反意问句用willyou;若表示表示建议，则用shallwe。如：Letusknowyouraddress,willyou?请把你的地址告诉我们，好吗?Letusgoswimmingtogether,shallwe?我们一起去游泳好吗?注：let's…只表示建议，所以其后反意问句总是用shallwe。而letus…既可表示建议请求，也可表示建议(较正式)，其后的反意问句要根据这两种不同情况分别使用willyou和shallwe。Let’sdomoreexercises.1.—Callmewhenyougethome.—OK,____.A.ImustB.IcanC.IwillD.Imay2.Jim,_____meahand.A.givesB.isgivingC.giveD.willgive3.Letme____ondutytoday.A.amB./C.beD.do4.Let's____ourtime.A.notwasteB.nowastingC.nottowasteD.nowaste5.—____higher,andyouwillseethehouse.—OK.A.IfyoustandB.TostandC.WhenyoustandD.StandCCCADChoosethecorrectanswer.6._____forgettowritetomewhenyou_____gettherenextTuesday.A.Don't;willB.Please;willC.Please;/D.Don't;/7.Please___doit.A.heB.heletC.lethimD.him8.____comein,please.A.WillB.DoC.Won'tD.Did9._____careful!A.BedoB.DobeC.NotD.Notdo10._____letanyoneopenthedoor.A.Don'tB.WillC.NotD.NoDCBBA11.LetJohnfinishtheworkallbyhimself,____?A.shallweB.willyouC.doyouD.dowe12.---Let’sgohome,shallwe?---_____.A.That’sright.B.That’sallC.That’sallrightD.Allright13.Pleaseturnonthelight,_____?A.areyouB.shallweC.shallID.willyou14.Don’ttellhimthefactnow,_____?A.shallweB.shallyouC.willyouD.doyou15.Letthechildrennotmakesomuchnoise,____?A.shallweB.willyouC.shallID.doyouBDDCB16.____6and4,andyouwillgetten.A.AddedB.AddingC.ToaddD.Add17.____lateagain,orI’llreportittoyourfather.A.Don’tbeB.Youaren’tC.Can’tbeD.Aren’t18.Don’tinterruptherwhensheisspeaking,___?A.won’tyouB.willyouC.shallweD.shan’twe19._____getoffthelorryuntilitstops.A.DoB.Can’tC./D.Don’t20.Let’snotbeginoursupperuntilfathercomesback,____?A.willyouB.won’tyouC.shallweD.shan’tweDABDC