祈使句
祈使句表示命令、警告、请求、劝告、建议征求对方意见等，谓语动词一律用原形。句子中通常不用主与，句末用感叹号或句号，用降调。
一、肯定祈使句
1、肯定祈使句开头用动词原形表示（第二人称you通常省略）
Sit down!
Be quite, plea!象征英文
2、有时为了加强语气，可以在动词之前加do
Do study hard.（务必要努力学习）、
Do be careful!(一定要当心)
二、否定祈使句
否定祈使句子阿拒收加上don’t，有时加never。
Don’t swim in the river.
5629小游戏 Don’t waste your time.
Never do that again.
三、以let 引导的祈使句
以let引导的句子也是一种祈使句，常用来表示建议或表明说话人的态度。
Let’s say good-bye here.
Don’t let him do that again.
注：1、表示禁止时，尤其是广告标语等也可用“No+动名词”来表示
No smoking here.
No parking.
2untilnow、祈使句=You must…
down什么意思 Come here.=You must come here.
Don’t do that again.= You mustn’t do that again.
3、Plea+祈使句蜉蝣的意思=Will you plea….
Come here on time, plea!=Will you plea come here on time?
4、祈使句相当一个if 引导的条件状语从句。
Hurry up, or we’ll be late.= If we don’t hurrp up, we’ll be late.
练习
1. It’倒霉熊第一部s a fine day. Let’s go fishing, ____?
A. won’t weB. will youC. don’t weD. shall we
葡萄英语怎么读2. Don’t smoke in the meeting-room, ____?
A. do youB. will youC. can youD. could you
3. –Don’t forget to come to my birthday party tomorrow. -I ____.
A. don’tB. won’tC. can’tD. haven’t
4. ____ down the radio. The baby’s asleep in the next room.
A. TurningB. To turnC. TurnedD. Turn
5. Lucy, ____ the door or someone’ll come in.
A. cloB. closC. not cloD. is closing
6. ____ and play football in the street after lunch.
A. Let’s not to goB. Let’s not goC. Let’s don’t go D. Not let’s go
7. A sign with the words“____”pka is often found in a bus.
A. Not parkingB. Not smokingC. No parkingD. No smoking
北极猴乐队
8. ____ Chine in you English class.
A. Not speakB. Don’t speakC. Speak notD. Don’t speaking
9.Will you plea not play with my pencil? →____ ____ with my pencil,____.
10. Plea ____, they’gallery是什么意思re having a meeting.
A. not be so noisyB. Be quiteC. mustn’t talkD. no speaking
11. ____ to meet me at the station. I’ll be waiting there.
A. Not to forgetB. Not forgetC. Forget notD. Don’t forget
12.You’ll be late for class if you won’t hurry up.(同义句)
