题目内容
18.---Look!Mr.Lee is standing under the tree.---It______ him.He has gone to Canada for his holiday.( )
| A. | must be | B. | mustn't be | C. | can be | D. | can't be |
分析 ---看!李先生正站在树下.
---肯定不是他,他去了加拿大度假.
解答 答案:D.结合He has gone to Canada for his holiday可知是表达的肯定不是,否定猜测用can't be,故答案是D.
点评 情态动词must,may,might,can,could等表示推测,它们的推测程度有强到弱的顺序是:must,can,could,may,might.must be 表肯定 can't 表示否定
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