and,_but_or用法归纳

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◇“和”,连接两个名词,代词或两个形容词等语法作用相同的词语。但否定句中用or。但如果前后名词都用no修饰,则可以用and。

The air was so warm and bright.

It has no feet or legs.

It has no eyes and no ears.

I have no sister or brother.

◇“然后”。用于连接两句有时间上先后的句子。

She washed the dishes and dried them.

◇表示目的,意图。用于go, come, stop, run, stay等动词后。

Come and have a drink.

Go and buy one.

◇“只要……就会……”“如果……那么……”,用于祈使句后,表示条件与结果的关系。Knock on the door, and it will be opened.

Come late again, and you’ll be fired.

but

◇但是,可是,而,却。

He is in poor health, but he still kept working.

◇用在表示歉意的话后,引起一个分句,这个but通常不译成汉语。

Excuse me, but can you tell me how to get to the railway station?

◇不与although/though (“虽然,尽管”)连用。

Though he is old, he works hard.

He is old, but he works hard.

◇作介词,表示“除了……之外”。

She did nothing but watch TV.

or

◇“一般疑问句+ or+被选择的部分”构成选择疑问句。

Do you like apples or pears?

Would you like tea or coffee?

◇“祈使句+or +陈述句”,表示“……,否则,……”

Hurry up, or you will be late.

Work hard, or you cannot pass this exam.

◇“和”,否定句中代替and。

I don’t like bananas or pears.

◇or 连接并列主语时,谓语动词的人称要与最后的那个主语保持一致。

Either you or he is right. 要么你要么他是对的。

◇or so 大约,左右

I’ll be there in an hour or so.

同步练习:

1.Hurry up, _________ you’ll be late for school.

2.Who’s the youngest, Rose, Helen ________ Betty?

3.Work hard, ______ you will succeed.

4.Excuse me, _______ could you tell me the way to the post office?

5.I’ll see you either on Monday _______ on Tuesday.

6.Put your coat on ______ you’ll be cold.

7.I’m sorry, _______ could you repeat that, please?

8.There is no one here ______me.

9.She can do anything _______sing.

10.The sky is blue ________ everything is beautiful.

11.We were very tired _______ we were very happy.

12.He never smokes ________ drinks.

13.There is no air ______ water on the moon.

14.Your classroom is clean _______ tidy.

15.My house is small _______ lovely.

16.Lucy worked hard at English ______ she came first in the English exam.

17.It is hot today, ______ some boys are still playing basketball outside.

18.People can’t live without air _____ water.

19.The Summer Palace is large _______ beautiful.

20.He looks tall and strong ______ he is afraid to go out at night.

21.We had no water ______ food at that time.

22.Hurry up! ______ we will be late!

e on! _______ you will win the match.

24.Be careful! _______ you will hurt yourself!

25.He usually goes to school by bus ______ by bike.

江苏13城市中考试题汇编:

( ) 1. We didn't enjoy the picnic _______ there was a sudden rain. (08连云港)

A.if

B. but

C. because

D. however

( ) 2. Work hard, _____ you'll pass the English exam this time. (08扬州)

A.or

B. but

C. because

D. and

( ) 3. He was sure his Dad would beat him, but his father didn't. ______, he picked up his crying son and kissed him. (08淮安)

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