语法问题

显示全部楼层 · 2009-6-5 20:21:19

1 Mary() be in London because I saw her in town just now
A can notBmay not
2 They must have seen the film yesterday,()?
A do they B must not they C have not day D did not they
麻烦写清为什么

千问 · 2009-6-5 20:21:19

第一题选A这是虚拟语气的肯定的虚拟，因为后面说because I saw her in town just now第二题选D must have seen 实际上是must have done的形式，是虚拟语气的表达形式，表推测的意思，但后面又 yesterday，所以选过去时态...

千问 · 2009-6-5 20:21:19

选择A选择D 1.因为后面的because从句所以，是一个强烈的判断句，may表示可能的意思2.这句话明显是说过去发生的事,因为yesterday,所以用didn't they...

千问 · 2009-6-5 20:21:19

1。A .can not-----不可能2.D .did not they----------must 的反义疑问句的否定式...