说明理由1."We didn't see him at the lecture yesterday." "He____it."A.mustn't attend.B.cannot have attended C.would have not attended D.needn't have attended2.Man ____die without air or water.A.will B.shall C.should D.would3.Oh dear!What on earth ____ this mean?A.should B.can C.may D.might4.At the moment she ____ with her brother at home.A.may play B.must be playing C.can play D.must have played请选出答案,并说出具体的理由,

问题描述：

说明理由
1."We didn't see him at the lecture yesterday." "He____it."
A.mustn't attend.B.cannot have attended
C.would have not attended D.needn't have attended
2.Man ____die without air or water.
A.will B.shall C.should D.would
3.Oh dear!What on earth ____ this mean?
A.should B.can C.may D.might
4.At the moment she ____ with her brother at home.
A.may play B.must be playing C.can play D.must have played
请选出答案,并说出具体的理由,

答

1题选B，过去时+猜测语气

2题选A,B,D都对，用在不同的地方，will会组成普通的句型，shall 多用于古代的英文（莎士比亚一类的），would的语气较委婉
3题选B，D, 口语化了。。。很难说出为什么，不过B用的多一点
4题选B 一个非常肯定的说法

答

1 B 对过去的推测
2 C 虚拟语气，假设
3 D 较弱的可能
4 B 对现在的猜测

答

第1题选B,这是表否定的推测,其它选项无此意义.
第2题选A,这是表有科学根据的陈述,一般将来时的用法的一种.
第3题选B,具体理由我说不出来了～语感～
第4题选B,因为前面有个at the moment,这里应该译为“在现在这个时候”,应该用进行时.（当然有的时候,at the moment 是“当时”的意思,那就不一定用进行时了,如：At the moment,Tom had just been fired,so...当时,汤姆刚刚被解雇,因此...)

答

1B 2D 3B 4B
1。对过去事情的不肯定的猜测
2。without 为虚拟语气
3。can 表可能，用于否定句和疑问句
4。对现在事情的猜测

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