47. Is it convenient for you to… 你是否方便……
Is it convenient for you to post this letter for me when you go out?
你出去的时候是否方便帮我寄这封信?
48.It depends on whether… 这取决于……是否…….
It depends on whether you are determined to do it or not.
这取决于你是否决心要做这件事情。
49.It doesn't make sense to… ……没有任何意义.
It doesn't make sense to argue with him.
和他争论没有任何意义。
50.It is/was…that/who… [强调句句型]
It was Edward who told me about it.
告诉我这件事的是爱德华。
51.It is believed that… ……人们认为…….
It is believed that what she said is true.
大家相信她的话是真的。
52.It is easy enough to… ……相当容易.
It is easy enough to copy and paste; but you should write something by yourself.
抄袭(复制十粘贴)非常容易，但是你应该自己写一些东西。
53.It is high time… 现在是……的时候了./早就应该……了. (从句使用虚拟语气)
It is high time we stopped talking about this silly question.
我们早就该结束讨论这个愚蠢的问题了。
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