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题目
题型:不详难度:来源:
---I think Helen is at home.
---No, she    be at home, for she phoned me from the airport just five minutes ago.
A.mustn"tB.needn"tC.can"tD.dared not

答案
C
解析

试题分析:句意:我想海伦应该在家里。不,她不可能在家里,因为她刚刚五分钟前还从机场给我打电话了。can’t不可能,用在否定句中表示对事情的强烈的否定推测。故选C
点评:情态动词是高考的热点,must表示强烈的肯定推测,意为“一定”;can’t表示强烈的否定推测情态动词。意为“不可能”,除了表推测外,还可以表达另外的意思,如must理解为必须,由这个词所开头的问句,肯定回答用Yes,you must.否定回答用No,you needn’t或者是No,you don’t have to.注意不用mustn’t,因为mustn’t表示例行禁止的含义。
核心考点
试题【---I think Helen is at home.---No, she    be at home, for she phoned me from the】;主要考察你对动词的分类等知识点的理解。[详细]
举一反三
--- He worked out such different questions at a very young age.
--- Oh, he ______ a very smart student then.
A.could have been B.should have been
C.might have beenD.must have been

题型:不详难度:| 查看答案
Thomas _____ a soldier, for he is much too short.
A.needn’t beB. should beC.may beD.can’t be

题型:不详难度:| 查看答案
If you won’t do as I told you, you____ not go to the party.
A.willB.canC.shallD.need

题型:不详难度:| 查看答案
On Sundays ,the retired(退休的)minster_____ come to the farm and work with the farmers.
A.canB.shouldC. mustD.would

题型:不详难度:| 查看答案
—Mr. Smith, why are you always asking me to do the difficult work?
—Because you _______ do such a thing and nobody else is fit for it.
A.wouldB.shouldC.can D.may

题型:不详难度:| 查看答案
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