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主谓一致:句子的主语和谓语必须在人称和数上一致

主语和谓语必须在人称和数上一致:
The content of these books is very good.
这些书的内容很好。
Between the two buildings stands a monument.
两座楼之间有一座纪念碑。
The results of the examination show that you have made good progress.
考试结果说明你们有很大进步。

1.主语若是一个抽象概念,谓语都用单数形式:
Growing vegetables needs constant watering.
种菜要经常浇水。
Smoking cigarettes is hazardous to your health.
吸烟危害健康。

2.主语若是单数,不受后面状语的影响,谓语仍用单数形式:
Nobody but Helen and Kate was there.
除了海伦和凯特那儿没人。
No one except his parents knows anything about it.
除了他父亲谁也不知此事。

3.each和由some,any,no,every构成合成代词都作单数看待:
Each of us has something to say.
我们每人都有些话说。
Is everybody ready?
大家都准备好了吗?

4.what,who,which等代词可以左单数看待,也可作复数看待,根据意思决定:
Which is your room?哪是你的房间?
Which are your rooms?哪几间是你们的房间?
Who’s knocking at the door?谁在敲门?
Who are quarreling?谁在吵架?

5.none可作单数看待,也可作复数看待,看说话人联想的是单数概念还是复数概念:
None(=Not one)of us has got a camera.
我们中间没有一个人有相机。
None of these books are easy enough for us.
这些书全太难,我们看不懂。

6.有些集体名词可作单数看待,也可作复数看待,根据意思决定:
His family isn’t very large.
他家里人不多。
My family are all music lovers.
我家里人都喜欢音乐。
The Committee meets twice a month.
委员会一月开两次会。
The Committee are divided in opinion.
委员们意见有分歧。

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