初中英语――祈使句
祈使句指的是表示命令、请求、建议或劝告的句子。其主语you常省略，谓语动词用原形，句末用感叹号或句号，读降调。
1. 肯定的祈使句 （1）动词原形+其他
Stand up, please. = Please stand up. 请起立。 （2）Be + adj.
Be careful! = Look out! = Take care! 小心 / 当心！
（3）Let's + 动词原形（let是让的意思，属于使役动词。使役动词let/have /make的用法都是后跟 sb + do形式）
Let’s go to school together. 咱们一起上学去吧。 2. 否定的祈使句 (1) Don't + 动词原形
Don't stand up. 别站起来。 Don't be careless. 别粗心。
Don't let them play with fire. 别让他们玩火。=Let them not play with fire （2）Let's ( let sb ) + not + 动词原形
Let's not say anything about it. 对于这件事，咱们什么也别说。 Let them not play with fire. 别让他们玩火。 3.祈使句的反意疑问句
(1) 肯定祈使句的反意疑问句反问部分用will you 或won't you。 Please open the door, will/ won’t you? 请把门打开，好吗？ (2) 否定祈使句的反意疑问句反问部分只用will you。 Don't be late again, will you? 别再迟到了，行不行？ (3) 以let's开头的祈使句反意疑问句反问部分用shall we。 Let's turn on the TV, shall we? 我们把电视打开，好吗？
<特别注意> 只有以let's开头的祈使句的反意疑问句的反问部分才用shall we，而let us 开头的祈使句的反意疑问句的反问部分应为will you或won't you. 如：Let us stay here, will/ won't you? 请（你）让我们留在这好吗？
语法练兵场 单项选择
1. The TV is too loud. Please________.
A. turn it down B. to turn it down C. turn down it D. to turn down it 2. _______ late again, Bill!
A. Don't to be B. Don't be C. Not be D. Be not 3. _______ cross the road until the traffic lights turn green. A. Not B. Won't C. Doesn't D. Don't 4. Please help me carry it, ______?
A. will I B. will you C. shall I D. shall we 5. Don't make so much noise, ______?
A. will you B. won't you C. shall we D. do you 6. Do you know the girl ______under the tree?
A. stand B. to stand C. standing D. stood 7. Kate, _______ your homework here tomorrow. A. bring B. brings C. to bring D. bringing 8. ________ me the truth, or I'll be angry.
A. Telling B. To tell C. Told D. Tell
9. I've kept the dog _______Maomao for a long time. A. Name B. named C. naming D. to name 10. Don't you know that _______ is good for our health? A. swim B. swimming C. swam D. swims 句型转换
11. Will you please read it again more slowly? （改为祈使句） _____ _____ again more slowly, please.
12. If you don't listen to me, I'll go. （改为同义句） _____ _____ me, or I’ll go.
13. Let's watch the sports games. （改为反意疑问句） Let's watch the sports games, _____ _____?
14. The teachers often tell the students not to be careless. （改为祈使句） _____ _____careless, please.
15Let us go and help the _____ _____, please.