文档介绍：重点语法:祈使句①肯定、否定形式②特例语法讲解:祈使句:表示请求、命令、禁止、劝告或建议的句子,特点是省略了主语。祈使句无主语,主语you常省去;动词原形谓语当,句首加don't否定变;朗读应当用降调,句末常标感叹号。●肯定结构:(即:动词原形(+宾语)+其它成分)如:。有的祈使句在意思明确的情况下,动词可省略。如:Thisway,please.=Gothisway,。Yougoandtellhim,Tom-------------------------------------------------------------------------------------Openyourbooks,please.-------------------------------------------------------------------------------------Goandwashyourhands.-------------------------------------------------------------------------------------Watchyoursteps.-------------------------------------------------------------------------------------Keepoffthegrass.-------------------------------------------------------------------------------------Lookout!Danger!-------------------------------------------------------------------------------------(即:Be+表语(名词或形容词)+其它成分)。如:Beagoodboy!要做一个好孩子!Bequiet,please.-------------------------------------------------------------------------------------Bekindtooursister.-------------------------------------------------------------------------------------(即:Let+宾语+动词原形+其它成分)。如:。●否定结构:'t构成。如:Don'etme!不要忘记我!-------------------------------------------------------------------------------------Don'tbelateforschool!上学不要迟到!Don’tclosethewindow.----------------------------------------------------------------------------