1、Listen to the question.Who can answer it?Please be quite!I am reading the book.Lets go to the cinema!Go upstairs!No smoking!祈 使 句content什么是祈使句祈使句的肯定式祈使句的否定式祈使句的反义疑问句content 什么是祈使句?表示请求、命令、建议、祝愿、叮嘱或禁止的句子叫祈使句。用于祈使句句首的动词总是用原形,不能用其他形式。表示各种情感的祈使句Turn off the TV,please.(请关上电视。请求)Go and wash your hands.(去洗
2、你的手。命令)Lets get down to work.(咱们开始工作吧!建议)Have a nice day!(过个愉快的一天祝愿)Be kind to our sister.(对姊妹要和善。叮嘱)No parking!(禁止停车 禁止)content祈使句的主语?祈使句的主语通常为第二人称(you),但一般都被省略,只有在特殊的情况下才把主语(you)补充出来。如:You be quiet!你安静!You go and tell him,Chris.克立斯,你去告诉他。You wait here for a moment.你在这儿等一会儿。有时祈使句的主语也可以是everybody,so
3、mebody,anybody,nobody等不定代词。如:Stand up,everybody!全体起立!Nobody move.任何人都不许动。祈使句的肯定式1.Do型(即:动词原形+其它成分)。如:Please have a seat here.请这边坐。有的祈使句在意思明确的情况下,动词可省略。如:This way,please.=Go this way,please.请这边走。2.Be型(即:Be+表语(名词或形容词)+其它成分)。如:Be a good boy!要做一个好孩子!3.Let型(即:Let+宾语+动词原形+其它成分)Lets go at once.咱们马上动身吧。Let
4、me try again.让我再试试。Let Tom go there himself.让汤姆自己去那儿。祈使句的否定式1.Do型和Be型 Do型和Be型的否定式都是在句首加dont构成。如:Dont forget me!不要忘记我!Dont be late for school!上学不要迟到!2.Let型Let型的否定式有两种:“Dont+let+宾语+动词原形+其它成分”和“Let+宾语+not+动词原形+其它成分”。如:Dont let him go./Let him not go.别让他走。3.以No开头有些可用no开头,用来表示禁止性的祈使句。如:No smoking!禁止吸烟!No
5、 fishing!禁止钓鱼!祈使句的反义疑问句1.肯定祈使句 肯定祈使句的反意疑问句反问部分用will you 或wont you。Please open the door,will/wont you?请把门打开,好吗?2.否定祈使句否定祈使句的反意疑问句反问部分只用will you。Dont be late again,will you?别再迟到了,行不行?3.Let型祈使句:Lets phone her now,?我们现在就给她打电话,好吗?Let us know your address,?请把你的地址告诉我们,好吗?表示请求或命令时,用 will you;表示建议或劝诱时,用 shal
6、l we。Shall we?Will youConclusion否定式反义疑问句肯定式1.Do型和Be型2.Let型3.以No开头表禁止1.肯定句的反义疑问句2.否定句的反义疑问句3.Let的反义疑问句1.Do型2.Be型3.Let型Exercises1._ me the truth,or Ill be angry.A.Telling B.To tell C.Told D.Tell2._ late again,Bill!A.Dont to be B.Dont be C.Not be D.Be not3.Please help me carry it,_?A.will I B.will you C.shall I D.shall we4.Dont make so much noise,_?A.will you B.wont you C.shall we D.do youThank you!