内容正文:
Grammar
Unit 2 Transportation
观察以下句子,这些句子有什么共性?判断这些句子是对谁说的
Don’t worry about it.
Take Line 6.
Change for Subway Line 2 at Zhuquemen station.
Get off at Zhonghua Square station.
Take Exit B.
无主语
使用动词原形
No Smoking
No Parking
No Stopping
No Shouting
No Touching
No Swimming
No Photos
No Fishing
Don’t Smoke
Don’t Park
Don’t Stop
Don’t Shout
Don’t touch
Don’t Swim
Don’t Take Photos
Don’t Fish
Imperative sentence
祈使句
1.用于表达命令、请求、劝告、警告、禁止等的句子。
2. 祈使句的对象(主语)是第二人称,所以通常省略。
3. 祈使句的动词都用原形。
看以下标志,将其与对应的指令相匹配。
Look and match.
______ 1) Be careful with the wet floor.
______ 2) Please don’t knock on the door.
______ 3) Wash your hands properly.
______ 4) Do not enter.
A
B
C
D
C
D
B
A
Imperative sentence
祈使句
(肯定形式)
V原 型:V原+其它
Write down your name, please.
Open the window.
Close your book.
Take the subway.
Take your bag.
Come in, please.
2. Be型:Be+其它(形容词或名词)
Be quiet!
Be careful!
Be quick!
Be a good student.
3. Let型:Let+宾语(常为第一人称+V原+其它
Let me help you.
Let us go to the park.
Let us take the subway.
Let him do it by himself.
4. Do型:Do+祈使句(Do表强调)
Do let me help you.
Do Speak loudly!
Do let him do it by himself.
Imperative sentence
祈使句
(否定形式)
Don’t Swim
Don’t Park
Don’t touch
Don’t Take Photos
V原 型:Don’t +V原+其它
Write down your name, please.
Open the window.
Close your book.
Come in.
2. Be型:Don’t + be+其它(形容词或名词)
Don’t be quick!
Never be late again!
Be quiet!
Be careful!
Be quick!
Be a good boy.
3. Let型:Don’t +let+宾语+V原+其它
Don’t let her go out.
Don’t let him go there!
3. Let型:Let+宾语+not+V原+其它
Let her not go out.
Let him not go there!
4. No型:No+Ving/名词
No Smoking
No Parking
No Stopping
No Shouting
No Photos
Imperative sentence
祈使句
(回答)
祈使句跟将来时态绑定,回答祈使句时,
一般用will(会做)或者won’t.(不会再做);
Please open the door, will you?
(前面提出要求)回答:“你能这样做吗”
在回答否定意义的祈使句时,要注意“形式一致,意思相反”
(1). 形式一致:yes和will保持一致,no和won’t保持一致。
(2). 意思相反:yes是“不”的意思,no是“是”的意思。
Don’t go out, please. It’s raining outside.
______, I ____. I have to meet my friend.
Yes
will
不,我得出去
let’s 和 let