关于情态动词的用法You _____ be tired; you have been working for so lo
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关于情态动词的用法
You _____ be tired; you have been working for so long a time,but he _____ be tired; he has just begun to work.
A.may not; must B.must; may not
C.can’t; must D.must; can’t
我选的是B 但是
我知道的是can 表示逻辑上的可能,但是may not 表示不可能的时候,就不能表示逻辑上的吗?
You _____ be tired; you have been working for so long a time,but he _____ be tired; he has just begun to work.
A.may not; must B.must; may not
C.can’t; must D.must; can’t
我选的是B 但是
我知道的是can 表示逻辑上的可能,但是may not 表示不可能的时候,就不能表示逻辑上的吗?
![关于情态动词的用法You _____ be tired; you have been working for so lo](/uploads/image/z/10568829-21-9.jpg?t=%E5%85%B3%E4%BA%8E%E6%83%85%E6%80%81%E5%8A%A8%E8%AF%8D%E7%9A%84%E7%94%A8%E6%B3%95You+_____+be+tired%3B+you+have+been+working+for+so+lo)
这里给出了充分的条件.所以你必须选一个 表示肯定推测和否定推测的词.而不是轻度推测,模棱两可的词.所以第一个选MUST.这个我想你已经理解了.肯定累了.
第二个,因为他刚刚才开始工作,所以肯定不可能累了. 而且这里选can't,除了语义上要表示不可能外.这个句子实际上还有个对比的结构.must的反义词就是can't
第二个,因为他刚刚才开始工作,所以肯定不可能累了. 而且这里选can't,除了语义上要表示不可能外.这个句子实际上还有个对比的结构.must的反义词就是can't
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