新概念2A语法祈使句.doc

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1、新概念英语青少版2A语法：祈使句 祈使句是表示请求、命令、劝告、祝愿或建议的句子。祈使句的主语一般为第二人称，但往往省去不用。同学们在学习祈使句时应注意以下几点：一、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。二、肯定祈使句如何变成否定祈使句祈使句否定式的构成方法是在动词原形前加

2、don’t：Don’tbelate.不要迟到。Don’tspeaksoloud.别这么大声说话。Don’twalkonthegrass.不要在草坪上走。Don’tlosethekey.别把钥匙丢了。Don’tcomeunlessItelephone.除非我打电话，否则你别来。三、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。Pleasecutme

3、apieceofcake.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。四、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。注意：这类祈使句的否定式有两种形式。如：Let’snothurry./Don’

4、tlet’shurry.我们不要太急。请完成以下习题：一、将以下祈使句改为否定式：1.Comehereearly.2.Askhim.3.Pleasewaitforher.4.Readthebookcarefully.5.Situnderthetree,please.二.选择填空()1.Herdoctorsaid:“________worksohard”AStopBDon’tCCan’tDNo()2.Sandy,________tobehereat8o’clockAissureBissurethatCwillbesureDbesure()3.________whe

5、nyoucrosstheroad.ADocareBCareCDobecarefulDTobecareful()4.________himthesecret,willyou?ADon’ttellBNottotellCNottellingDNotelling()5.________inbed.It’sbadforyoureyes.ANottoreadBDon’treadCDon’ttoreadDNotread()6.________Yourchild.We’lllookafterhim.ANottoworryaboutBDon’tworryaboutCNotworr

6、yforDDon’tworrywith()7.Theyareverytired.Why________havearest?AnottheyBdonottheyCdon’ttheyDnotto()8--Youlookrathertired.________stoppingtohavearest?--Allright.AWhynotBHowaboutCWhynottoDwhydon’t()9______tellalie.AHardlyBNotCNoDNever()10.Please________lookoutside.Lookattheblackboard.Ano

7、tBdon’tCaren’tDcan’t()11______goforthebookalone,MsZhang.ALet’sBLetmeCLetusDAllow