题目内容
6.---Dad,must we wait until the light becomes green?---Yes,I'm afraid we ______.That's the traffic rule.( )
| A. | can | B. | may | C. | have to | D. | need |
分析 --爸爸,我们必须等到绿灯亮了吗?
--是的,恐怕我们必须这样做.这是交通规则.
解答 答案:C.can能,会;may可以;have to不得不;need需要.根据must we wait until the light becomes green?可知本句是must引导的一般疑问句,must的含义是必须一定,其否定形式mustn't表示禁止的含义.而must的否定回答一般借助于needn't和don't have to来构成,根据That's the traffic rule,可知等到绿灯亮是交通规则.必须这样做.have to不得不.故选C.
点评 本题考查了情态动词的用法.解答时注意以must开头引导的一般疑问句的否定回答一般借助于needn'和don't have to来构成.
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