1、 BelindaLeft,right,left,left,right,right Left,left,right,right,go,go,go!Left,left,right,right,go,turn around,go,go,go!祈使句(Imperative Sentence）表示命令、请求、劝告、警告等.祈使句因对象（即主语）是第二人称，所以通常被省略。谓语动词用原形，句末则使用感叹号或句号,读降调。Be quiet,please.（请安静。请求）No smoking!(请勿吸烟。劝告）No parking.(禁止停车。禁止）Keep off the grass.（勿践草坪。禁止）Do
2、nt litter.（不要乱扔垃圾。劝告）Go and wash your hands.（去洗你的手。命令）No smokingDont eat./Dont drink.Dont touchNo parkingBe quietRead and observe(观察观察)Turn left!Turn right!Please go upstairs!Go downstairs!Walk on the zebra crossing!Dont smoke!Dont play football!Dont park your car!Please dont eat!Dont pick the flowe
3、rs!Draw the conclusion 1.1.祈使句的结构如下：祈使句的结构如下：(Please)+do sth.Open the window (Please)+Dont do sth.Dont turn left.肯定：肯定：否定否定：2.肯定：肯定：Lets/Let sb+do Lets go home together.否定：否定：Let sb not do Dont let sb do Let us not talk in the class.Dont let us talk in the class.注注:如果以如果以lets 开头的祈使句，必须在开头的祈使句，必须在let
4、s后加后加not Lets not talk about the matter.3.为强调动词时可以在动词前加为强调动词时可以在动词前加Do如：如：Do come in,please!Do listen to me,please!Do open the door,please!4.由“no+v-ing/名词”形式构成公共警示语，是祈使句的一种省略形式 No smoking!禁止吸烟 No parking!禁止泊车 No photos!禁止拍照Lets do exercise.1.Jim,_ me a hand.A.gives B.is giving C.will give D.give2._
5、careful,Jenny!There is a tree in front of you.A.Am B./C.Be D.Was3.Lets _ our time.A.not waste B.no wasting C.not to waste D.no waste4._ higher,and you will see the house.OK.A.If you stand B.To stand C.When you stand D.Stand5.Please _ do it.A.he B.let him C.let he D.him6._ let anyone open the door.A.
6、Dont B.Will C.Not D.No7.Dont be late again.Sorry,_.A.I may B.I must C.I will D.I wont8.Call me when you get home.OK,_.A.I must B.I can C.I will D.I may1-Its her birthday next week.-Then_ her about the surprise birthday.2 How can I get to Peoples Hospital?-_ along the street and _ left at the lights.
7、P49.Read the dialogues and complete them withImperatives and the correct form of the verbs.dont tellturn Go3-We have to finish the work in two hours.-Then lets_ any time.4-_so much noise,please.-Ok.5-_out!Theres a car coming.-Thanks.not wasteDont make 拓展拓展Lets do more exercises.1.Call me when you ge
8、t 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 stand B.To stand C.When you stand D.Sta
9、ndCCCADChoose 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 D.Not do10._ let anyone open the door.A.
10、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.will you14.Dont tell him the fact now,_?A.s
11、hall 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
12、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 weDABDCon the roadin classin the dining roomin class1.Be quiet.2.Take notes.3.Listen to the teacher carefully.4.Dont eat in class.on the road1.Walk on the zebra crossing.2.Be careful.3.Dont play football.4.Dont run fast.in the restaurant1.Line up.2.Dont push.3.Dont make noise.4.Dont waste food.
