高中英语 Module 2 Grammar课件 外研必修4.ppt

外研版高一年级(必修4)Module2Grammar:Imperatives祈使句表示命令请求建议劝告或号召的句子叫做祈使句。祈使句可分为第二人称祈使句和第一三人称祈使句。祈使句的主语为you通常省略谓语动词使用原形句末用感叹号或句号。祈使句的主语为第一三人称句子结构为:Let+动词原形+其他成分或Let’s+动词原形+其他成分。主语为第一三人称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。例如：Don’tbelateagain.Don’tletherbealone.Letusnottalkofthatmatter.Dostudyhardatschool.2.加强祈使句的语气：有时为了使语气更委婉可以使用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。例如：Wouldyoucometodinnerwithmetonight?3.祈使句表祝愿的方式：Successtoyou!Wishyouagoodjourney.Mayyouhaveahappymarriage.Here’stoyoursuccess!Allowmetoproposeatoasttoourfriendship!4.含let的祈使句：Letsomebodyv/adv.Let’sbefriends.Letmehaveatrywillyou?Lethiminplease.5.不用动词开头的祈使句。Topumpseveryoneofyou!Totheairporttaxi!Downwiththepens!Nosmoking!Noparking!Nospitting!Nolitter!Noadmittanceexceptonbusiness!用祈使句完成下列句子。5._________forpedestrians.6.______behindyoubeforeyouturnrightorleft.7.__________inthemiddleoftheroad.1.Standoverthere___you’llbeabletoseeitbetter.A.orB.whileC.butD.and2.I’veneverseenanyonerunsofast----______Davidgo.A.justwatchB.justtowatchC.justwatchingD.justhavingwatched3.Letuspass_______?A.shan’tweB.shallweC.won’tweD.willyou4.Waitaminute______?A.shallyouB.willyouC.doyouD.don’tyou5.–Aliceyoufeedthebirdtoday____?–ButIfedityesterday.A.doyouB.willyouC.didn’tyouD.don’tyou6.___downtheradio—thebaby’sasleep