祈使句1.定义:表示命令或请求对方去做某事。PS:①“对方”指的是you②“做”表示有动词会出现2.特点:①无人称:eg:Sitdown.Standup.PS:这些句子都是无人称的②只有两种句型:肯定句/否定句3.祈使句的肯定句表达方式:(1)直接用“动词原型”开头eg①:Givethatbooktome,please.eg②:Comehereandsitdown.(2)开头用“Please”eg①:Pleasegivethatbooktome.eg②:Pleasecomehereandsitdown.PS:①please+动词原型②“please”后面没有逗号。(3)开头可以是人名eg①:Tom,givethatbooktome.eg②:Kelly,comehereandsitdown.PS:人名后面要加逗号,之后跟动词原型。4.祈使句的否定句表达方式:eg①:Pleasegivethatbooktome.(改否定句)→Pleasedon’tgivethatbooktome.PS:因为祈使句永远是和“你/你们”在说话,所以只要用”don’t”。eg②:Kelly,passmethesalt.(改否定句/让学生练习)→Kelly,don’tpassmethesalt.5.祈使句和can/can’t互换(确认概念:祈使句的肯定句→can;祈使句的否定句→can’t)eg①:Crossthestreet,please.(同义句互换)→Youcancrossthestreet.PS:①确认祈使句是肯定句,所以用can来互换②有can的话,前面肯定是人称代词”you“eg②:Don’tcrossthestreet,please.(同义句互换)→Youcan’tcrossthestreet.PS:①确认祈使句是否定句,所以用can’t来互换eg3:Pleasedon’tputyourbookshere,Kitty.→Youcan’tputyourbookshere,Kitty.PS:确认祈使句是否定句,所以用can’t来互换。.Ex:同义句互换(1)Givetherulertome.(2)Don’trideabikeinthegarden.(3)Don’tclosethedoor,please.(4)Putthebookonthedesk,Kitty.(5)Flythekiteinthepark,Peter.Ex:改句型(肯定、否定互换)(1)Gotothedoor,please.(2)Don’tlookather.(3)Pleaseputithere.(4)Pleaseflyyourkiteinthegarden,Lucy.(5)Don’tstandthere.