1、Imperative sentence,Read and observe(觀(guān)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!,Draw the conclusion (得出結(jié)論),祈使句的結(jié)構(gòu)如下： (Please) + do sth. (Please) + Dont do sth.,肯

2、定：,否定：,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 sta

3、nd 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 w

4、ill D. I may,Exercises:,祈使句的句型：,Be quiet. Please have a seat. David, pay attention.,Dont be afraid. Please do not make a noise. Alan, dont be late.,1.動(dòng)詞+ 2. Please+動(dòng)詞 3. 人名+動(dòng)詞,肯定,否定,在動(dòng)詞前面加dont否定,Giving orders / instructions,祈使句 : 是表示請(qǐng)求、命令、建議等句子，通常說(shuō)話(huà)的對(duì)象是第二人稱(chēng)you, you常被省略。 祈使句常見(jiàn)題型： 1.Lets + （not）動(dòng)詞原形 E

5、g. 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?,反意疑問(wèn)句,祈使句,祈使句,無(wú)主語(yǔ),只用動(dòng)詞就可以. 表示請(qǐng)求或命令,加上please表客氣。 如果變成否定句， Dont開(kāi)頭是規(guī)律。 No talking!是警示，祈使句用法要牢記。,Lets do more exercises.,1. Call me when you get home. OK, _. A. I must B. I can C. I will D

6、. 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

7、,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

8、do 10. _ let anyone open the door. A. Dont B. Will C. Not D. No,D,C,B,B,A,in class,1. Be quiet. 2. Take notes. 3. Listen to the teacher carefully. 4. Dont eat in class. .,on the road,Walk on the zebra crossing. 2. Be careful. 3. Dont play football. 4. Dont run fast. ,in the restaurant,Line up. 2. Dont push. 3. Dont make noise. 4. Dont waste food. ,祈使句結(jié)構(gòu)如下： (Please) + do sth. (Please) + Dont do sth.,Summa