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 Stand up, please. = Please stand up.  请起立。 （2）Be + adj.      Be careful! = Look out! = Take care! 小心 / 当心！ （3）Let's + 动词原形      Let’s go to school together.  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't stand up. 别站起来。      Don't be careless. 别粗心。     Don't let them play with fire. 别让他们玩火。 （2）Let's ( let sb ) + not + 动词原形      Let's not say anything about it. 对于这件事，咱们什么也别说。      Let them not play with fire. 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