初中祈使句课件PPT文档格式.ppt

1、Dont pick the flowers!Go upstairs!ReadandobservethedifferenceTurn left!Please go upstairs!Go downstairs!Dont play football!Please dont eat!Drawtheconclusion（得出结论）祈使句的结构如下：祈使句的结构如下：（Please）+do sth.（Please）+Dont do sth.肯定：肯定：否定否定：祈使句的句型Be quiet.Please have a seat.David,pay attention.Dont be afraid.Ple

2、ase do not make a noise.Alan,dont be late.1.动词动词+2.Please+动词动词 3.人名人名+动词动词肯肯定定否否定定在动词前面在动词前面加加dont否否定定祈使句句式详解1.肯定的祈使句（1）动词原形+其他Standup,please.=Pleasestandup.请起立。（2）Be+adj.Becareful!=Lookout!=Takecare!小心/当心！（3）Lets+动词原形Letsgotoschooltogether.咱们一起上学去吧。祈使句句式详解2.否定的祈使句（1）Dont+动词原形Dontstandup.别站起来。Dontbe

3、careless.别粗心。Dontletthemplaywithfire.别让他们玩火。（2）Lets（letsb）+not+动词原形Letsnotsayanythingaboutit.对于这件事，咱们什么也别说。Letthemnotplaywithfire.别让他们玩火。祈使句句式详解3.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。Dobecareful.务请小心。Docomeonti

4、me.务必请准时来。祈使句句式详解4.关于以let开头的祈使句Letseatouttonight.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。1.这类祈使句的否定式有两种形式。这类祈使句的否定式有两种形式。Lets not hurry./Dont lets hurry.我们不要太急。我们不要太急。2.let后用作宾语补足语的动词要用原形，不能用带后用作宾语补足语的动词要用原形，不能用带to的不定式的不定

5、式。祈使句句式详解5.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）。Pleasedontgetangry.请不要生气。Pleasedrivemoreslowly.请开得慢一点。Pleasecutmeapieceofcake.请给我切一块蛋糕。Pleasetrytobequiet.请设法保持安静。Pleaserepeatwhatyouvejustsaid.请把你刚才说的话重复一遍。祈使句与反意疑问句一、基本原则若陈述部分为祈使句，反意问句通常用willyou,wontyou,wouldyou

6、等。Mailthelettertoday,willyou?今天就把信发掉，好吗?Trytobebackbytwo,wontyou?设法两点之前回来，好吗?若陈述部分为否定式，则反意问句部分只用willyou。Dontforgettoposttheletter,willyou?请别忘了寄信。有时根据语境的需要，反意问句也可以用canyou,cantyou等：Givemesomecigarettes,canyou?给我些香烟，可以吗?Walkfaster,cantyou?走快点，不行吗?祈使句与反意疑问句二、let型1.当祈使句为Lets时：反意问句总是用shallwe。Letsphonehern

7、ow,shallwe?我们现在就给她打电话，好吗?Letsgotothecinematonight,shallwe?今晚咱们去看电影，好吗?2.当祈使句为Letus时：若表示请求，反意问句用willyou;若表示表示建议，则用shallwe。Letusknowyouraddress,willyou?请把你的地址告诉我们，好吗?Letusgoswimmingtogether,shallwe?我们一起去游泳好吗?lets只表示建议，所以其后反意问句总是用shallwe。而letus既可表示建议请求，也可表示建议（较正式），其后的反意问句要根据这两种不同情况分别使用willyou和shallwe。L

8、etsdomoreexercises.1.Call me when you get home.OK,_.A.I must B.I can C.I will D.I may2.Jim,_ me a hand.A.gives B.is giving C.give D.will give3.Let me _ on duty today.A.am B./C.be D.do4.Lets _ our time.A.not waste B.no wasting C.not to waste D.no waste5._ higher,and you will see the house.OK.A.If you

9、 stand B.To stand C.When you stand D.StandCCCADChoose the correct answer.6._ forget to write to me when you _ get there next Tuesday.A.Dont;will B.Please;will C.Please;/D.Dont;/7.Please _ do it.A.he B.he let C.let him D.him8._ come in,please.A.Will B.Do C.Wont D.Did9._ careful!A.Be do B.Do be C.Not

10、D.Not do10._ let anyone open the door.A.Dont B.Will C.Not D.NoDCBBA11.Let John finish the work all by himself,_?A.shall we B.will you C.do you D.do we12.-Lets go home,shall we?-_.A.Thats right.B.Thats all C.Thats all right D.All right13.Please turn on the light,_?A.are you B.shall we C.shall I D.wil

11、l you14.Dont tell him the fact now,_?A.shall we B.shall you C.will you D.do you15.Let the children not make so much noise,_?A.shall we B.will you C.shall I D.do youBDDCB16._ 6 and 4,and you will get ten.A.Added B.Adding C.To add D.Add17._ late again,or Ill report it to your father.A.Dont be B.You arent C.Cant be D.Arent 18.Dont interrupt her when she is speaking,_?A.wont you B.will you C.shall we D.shant we19._ get off the lorry until it stops.A.Do B.Cant C./D.Dont20.Lets not begin our supper until father comes back,_?A.will you B.wont you C.shall we D.shant weDABDC