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问题: 请教几个英语句子

先给我看看以下几个句子有没有错,再告诉我为什莫这样做,相关语法知识(句子中的动词时态)
1)the teacher demands that we be on time.
2) I insisted that he pay me money.
3) I recommended that she not go to the concert.
4) It is important that they be told the truth.
5)I suggested that she see a doctor.

解答:

这些句子都是正确的, 都是使用 should 的虚拟 ,should 可加在that 从句主语后面
should 的虚拟 具体请参考
http://www.yeworld.net/index/CLO/CC/TS/96_200292/96%2064%20200292155509.asp (二、特殊形式的虚拟语气)