题目内容
3.-Must I come up with the solution to the science projrct today?--No,you_______.But you must make it ______5 o'clock tomorrow afternoon.( )
| A. | mustn';at | B. | can't;before | ||
| C. | don't have to;by | D. | needn't;in |
分析 --今天我必须做出解决这个科研项目的方案来吗?
--不,你不必.但是你必须明天下午5点之前做出来.
解答 答案:C.
根据No和But you must make it ______5 o'clock tomorrow afternoon.可知下面为否定回答,must的含义是必须,一定,其否定形式mustn't表示禁止的含义.在这里不是禁止的意思.must的否定回答一般可借助于needn'和don't have to来构成,表不必;在这里by5 o'clock 表示在5点之前.故选C.
点评 本题考查了情态动词的用法.注意must的用法以及它的肯否定形式.
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