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.。