表命令,请求,建议,劝告的句子叫祈使句。可分为第二人称祈使句和第一、三人称祈使句。主语为you,常省略,谓语动词用原形,句末用感叹号或句号。主语为第一、三人称句子结构:Let+动词原形+其他成分或Let’s+动词原形+其他成分。主语为第二人称：e.g.Switchoffthemotor.Followtherulesoftheroad.Don’tleavethelighton.主语为第一,三人称：e.g.Letmesee.Lethercomehereateighto’clock.Letushelpyoutidyyourroom.Let’shaveabreak.1.祈使句的否定式:第二人称祈使句一般在句首加don’t;第一人称祈使句一般在人称代词后加not;第三人称祈使句一般在句首加don’t。有时为了加强祈使句的语气,可以在谓语动词前加do。e.g.Don’tbelateagain.Don’tletherbealone.Letusnottalkofthatmatter.Dostudyhardatschool.2.加强祈使句的语气：有时为使语气更委婉,可用Will/Would/Couldyou+动词原形、在句末加please、在句末加willyou/shallwe，Whynot/Whydon’tyou+动词原形、You’dbetter+动词原形、Isuggest...等。e.g.Wouldyoucometodinnerwithmetonight?3.祈使句表祝愿的方式：e.g.Successtoyou!Wishyouagoodjourney.Mayyouhaveahappymarriage.Here’stoyoursuccess!Allowmetoproposeatoasttoourfriendship!4.含let的祈使句:Letsomebodyv./adv.e.g.Let’sbefriends.Letmehaveatry,willyou?Lethimin,please.5.不用动词开头的祈使句：e.g.Topumps,everyoneofyou!Totheairport,taxi!Downwiththepens!Nosmoking!Nospitting!Nolitter!Lookatthesignsandsaywhattheydo.Turnright.Don’tgofasterthan100kph.Don’tturnleft.Noparking.Don’twalk.1.Theygiveadvice.2.Theygiveinstructions.3.Theygiveinformation.4.Theygivepermission.Readthesedosanddon’tsformotoristsstuckinatrafficjam.Ticktheonesyouagreewith.DosSwitchoffthemotor.Turnonthecarradio.Speaktoyourpassengers.Followtherulesoftheroad.Keepcool.Don’tsLeavethemotoron.Blowyourhorn.Reactwhenothersdrivebadly.Breaktherulesoftheroad.Getangry.Completethefollowingsentences.1.________onthepavement.2._____inthebicyclelanes.3._____atredtrafficlights.4._____therulesoftheroad.Don’tgoStayStopKeepbreakgokeeplookridestopstaywatchout5._________forpedestrians.6.______behindyoubeforeyouturnrightorleft.7.__________inthemiddleoftheroad.LookWatchoutDon’tride1.Standoverthere___you’llbeabletoseeitbetter.A.orB.whileC.butD.and2.I’veneverseenanyonerunsofast----___Davidgo.A.justwatchB.justtowatchC.justwatchingD.justhavingwatchedDAChoosethecorrectanswers.3.Letuspass,____?A.shan’tweB.shallweC.won’tweD.willyou4.Waitaminute,____?A.shallyouB.willyouC.doyouD.don’tyouDB5.–Alice,youfeedthebirdtoday,____?–ButIfedityesterday.A.doyouB.willyouC.didn’tyouD.don’tyou本题中Alice并不是句子的主语,而是祈使句,为了引起对方的注意。6.___downtheradio—thebaby’sasleepinthenextroom.A.TurningB.TurnedC.TurnD.Toturn祈使句以动词原形开头。7.–Howaboutafilmtonight?–____Ihaven’tbeentothecinemaforalongtime.A.Yes,thanksB.Whynot?C.No,goawayD.It’sapity.8.You’dbetternotsmokehere,_______?A.willyouB.shallyouC.haveyouD.hadyou有hadbetter的句子构成反意疑问句,用had构成。9.Don’tforgettophoneme,______?A.doyouB.needn’tyouC.won’tyouD.willyou否定祈使句的反意疑问句用will构成。10.Let’shaveacupoftea,________?A.shallyouB.willyouC.shallweD.won’tyou以let’s开头的祈使句用shallwe,以letus开头的祈使句用willyou,构成反意疑问句。Finishtheexercises1-3onpage73.
