题目内容

4.The mom hasn't come back yet,so the girl _________sleep alone.(  )
A.dare notB.dares not
C.doesn't dares to   

分析 妈妈还没有来,所以女孩不敢一个人睡觉.

解答 答案:A.dare以作实义动词,也可以作情态动词.实义动词dare后面接动词不定式to do.借助于助动词构成否定,这里主语the girl,故借助于does,后加原形dare,故C错,dare作情态动词时后面接动词原形,没有三单变化,否定直接加not,故选A.

点评 dare可以作实义动词,也可以作情态动词.
(1)实义动词dare后面接动词不定式to do.如:
I dare to swim across the river
I don't dare to say that.
Do you dare to go with me?(肯定回答:Yes,I do.否定回答:No,I don't.)
(2)dare作情态动词时后面接动词原形(不带to的动词不定式).如:
I daren't say that.
Dare you go with me?(肯定回答:Yes,I dare.否定回答:No,I dare not.)
How dare you say that?
If he dare break the rule,he will be punished.

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