题目内容
4.-Remember that you _________ play balls in the street!-I see.It's too dangerous.( )
| A. | may not | B. | can't | C. | mustn't | D. | needn't |
分析 ---记得不要在街上玩球.
---我知道了,太危险了.
解答 答案:B.结合下文It's too dangerous可知上文是说不能在街上玩球,故用can't表示不能.may not不可能,mustn't不允许,禁止,needn't没有必要,故选B.
点评 情态动词有can (could),may (might),must,have to,shall (should,will (would),dare (dared),need (needed),ought to等. 情态动词无人称和数的变化;不能单独使用,必须与其后的动词原形构成谓语.
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