,Imperative Sentence,Turn left!,Guessing Game,Turn right!,Guessing Game,Walk on the zebra crossing!,Guessing Game,Guessing Game,Be quiet, please!,Guessing Game,Dont play football!,Guessing Game,Dont park your car! NO parking,Guessing Game,Dont eat!,Guessing Game,Dont pick the flowers!,Go upstairs!,Guessing Game,Guessing Game,Go downstairs!,Read and observe(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 flowers!,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）Dont litter.（不要乱扔垃圾。劝告）Turn left!（向左转弯。命令）,Draw the conclusion (得出结论),祈使句的结构如下：(Please) + do sth. (Please) + Dont do sth.,肯定：,否定：,祈使句( Imperative Sentence）表命令、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。,Lets do exercise.,1. Jim, _ me a hand. A. gives B. is giving C. will give D. give 2. _ careful, Jenny! There is a tree in front of you. A. Am B. / C. Be D. Was 3. Lets _ our time. A. not waste B. no wasting C. not to waste D. no waste 4. _ higher, and you will see the house.OK.A. If you stand B. To stand C. When you stand D. Stand,Exercises:,5. Please _ do it.A. he B. let him C. let he D. him 6. _ let anyone open the door. A. Dont B. Will C. Not D. No 7. Dont be late again.Sorry, _.A. I may B. I must C. I will D. I wont 8. Call me when you get home.OK, _.A. I must B. I can C. I will D. I may,Exercises:,祈使句的句型：,1、肯定的祈使句 句型: 1)动词原形（省略主语） Come in! Be quiet! Be a good boy! 2)有时为了加强语气，可以在动词之前加do表示“务必，一定”。 Do come on time! Do look out!,祈使句的句型：,2、祈使句的否定 句型： 1)Dont+v. Dont be late. Dont come out. 2)Lets+not+v. Lets not speak loudly. 让我们不要大声说话。,Giving orders / instructions,祈使句常见题型： 1.Lets + （not）动词原形 Eg. Lets go home together./ lets not talk in the class.2. lets , shall we?3.Let sb . , will you?4.祈使句 ， will you?,反意疑问句,祈使句中需要注意的一些情况,1、有时为了表示委婉语气，可在句首或句尾加上please,但please加在句尾时，前面要用逗号隔开。 Please sit down. Stand up,please. 2、在意思较为明显的情况下可一把谓语动词省去。 This way,please. 3、有时为了明确的向对方提出请求或发出命令，可加呼语，但呼语要与句子隔开。 Turn off the light,Jim. 4、某些名词、形容词或副词等，后面加感叹号，也可作为祈使句使用。 Hand up!请举手！ Hand down!放下手！ taxi!出租车！ Books up!举起书！ Books down！放下书！,祈使句,祈使句,无主语,只用动词就可以. 表示请求或命令,加上please表客气。 如果变成否定句， Dont开头是规律。 No talking!是警示，祈使句用法要牢记。,1 -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.,P49.Read the dialogues and complete them with Imperatives and the correct form of the verbs.,dont tell,turn,Go,3 -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 waste,Dont make,Look,Lets do more exercises.,1. Call me when you get home.OK, _.A. I must B. I can C. I will D. I may 2. Jim, _ me a hand. A. gives B. is giving C. give D. will give 3. Let me _ on duty today. A. am B. / C. be D. do 4. Lets _ our time. A. not waste B. no wasting C. not to waste D. no waste 5. _ higher, and you will see the house. OK.A. If you stand B. To stand C. When you stand D. Stand,C,C,C,A,D,Choose 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. him 8. _ come in, please. A. Will B. Do C. Wont D. Did 9. _ careful! A. Be do B. Do be C. Not D. Not do 10. _ let anyone open the door. A. Dont B. Will C. Not D. No,D,C,B,B,A,11. Let John finish the work all by himself, _? A. shall we B. will you C. do you D. do we 12. -Lets go home, shall we? - _. A. Thats right. B. Thats all C. Thats all right D. All right 13.Please turn on the light, _?A. are you B. shall we C. shall I D. will you 14. Dont tell him the fact now, _?A. shall we B. shall you C. will you D. do you 15.Let the children not make so much noise, _?A. shall we B. will you C. shall I D. do you,B,D,D,C,B,16. _ 6 and 4, and you will get ten.A. Added B. Adding C. To add D. Add 17._ 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 we 19. _ get off the lorry until it stops.A. Do B. Cant C. / D. Dont 20.Lets not begin our supper until father comes back, _?A. will you B. wont you C. shall we D. shant we,