题目内容
20.There is no bus now.We ________ walk home.( )| A. | aren't | B. | have to | C. | must | D. | can't |
分析 现在没有公共汽车了,我们得步行回家.
解答 答案:B.
根据There is no bus now.We ________ walk home.可知现在没有公共汽车了,我们得步行回家.aren't,are的否定形式;have to 不得不,必须,客观上应该这样;must必须,受主观条件的制约;can't不可能.根据There is no bus now,可知现在没有公共汽车了,客观上我们不得不步行回家.故选B.
点评 本题考查了情态动词的用法.解答时首先根据题干明确句意,理解所给选项中每个情态动词的意思并熟练掌握它们的用法,便可作出正确选择.
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