老吾老及人之老英语祈使句的用法

2020年12月22日发(作者：童能灵)
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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
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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。

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练习
I. 用括号内所给动词的适当形式填空。
1. It’s an important meeting.
______(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
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( )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
( ) 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 child. We’ll look
after him.
A Not to worry about B Don’t
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worry about
C Not worry
for D
Don’t worry with
( ) 7. ______ tell a lie.
A Hardly B
Not C
No D Never
( ) ________ look outside. Look at the
blackboard
A not B don’t C
aren’t D can’t
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