祈使句
1、定义：祈使句是用来表示请求、
命令、劝说、号召、警告
等的句子。
在祈使句中，通常省略第二人称主
语you，以动词原形
开头。
句末一般用句号；表示较强语气时，则用感叹号。
2、类型：
1、V型：动词原形+ 其他
2、Be型：Be + 形容词
3、Let 型：Let sb + 其他
4、No 型：No+ v-ing / n
3、注意：
①表示委婉、客气时，常加
please(可放句首，句末<用
逗号隔开>)
②祈使句的否定形式：一般在句首加don’t
③Let型的祈使句变否定句，
可在句首加don’t, 或在
动词原形前加not.
4、祈使句用法口诀
祈使句，祈使句，请求命令或建议。主语是you常省去，动词原形开头
记。
否定形式加Don’t，Let否定有两
种。
想更客气please, 句首句末没关系。
练习
I. 用括号内所给动词的适当形式填空。
1. It’s an important meet ing.
______(not,
be )late.
2. _______ (not,make) any noise! Your mother is sleeping.
3. _______ (not, speak) with your mouth full of food and _____ (be) polite.
4. ______ ( not, talk) and _______ (read)
aloud.
5. ____ (not,leave) your homework for
tomorrow, Larry.
6. _____ (look) out! A car is coming.
7. ______ (give) us ten years and just see what our country will be like.
8. _______ (not, let) the baby cry.
9. Let’s _____ (not, say) anything
about it.
II. 选择填空
( )1 .Her doctor said: “________ work so hard
A Stop
B Don’t
C Can’t
D No ( )2. Cindy, ______ to be here at 8 o’clock
A is sure
B is sure that
C will be sure
D be sure
( )3._______ when you cross the road
A Do care
B Care
C Be careful
D To be careful
( )4. ________him the secret, will you？
A Don’t tell
B Not to tell
C Not telling
D No telling
( )5. ________ in bed. It’s bad for your eyes.
A Not to read
B Don’t read
C Don’t to read
D Not read
( )6. ________ your chil d. We’ll look after him.
A Not to worry about
B Don’t worry
about
C Not worry for
D Don’t worry
with
( ) 7. ______ tell a lie.
A Hardly
B Not
C No
D Never ( )8.Please ________ look outside. Look at the blackboard
A not
B don’t
C aren’t
D can’t
