45.In that case，… 既然那樣……
In that case, I have no more to say.
既然那樣，我沒什么好說的了.
46…… ……is of great importance. ……很重要
If you want to succeed in life, I think to set a goal for yourself is of great importance.
如果你想在生活中成功，我覺得為自己確立一個(gè)目標(biāo)是非常重要的。
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
你出去的時(shí)候是否方便幫我寄這封信.
48.It depends on whether…… 這取決于……是否……
It depends on whether you are determined to do it or not.
這取決于你是否決心要做這件事情.
49.It doesn't make sense to………沒有任何意義
It doesn't make sense to argue with him.
和他爭論沒有任何意義.
50.It is/was……that/who…… [強(qiáng)調(diào)句句型]
It was Edward who told me about it.
告訴我這件事的是愛德華.
51.It is believed that………人們認(rèn)為……
It is believed that what she said is true.
大家相信她的話是真的
52.It is easy enough to…………相當(dāng)容易
It is easy enough to copy and paste; but you should write something by yourself.
抄襲（復(fù)制十粘貼）非常容易，但是你應(yīng)該自己寫一些東西.
53.It is high time …… 現(xiàn)在是……的時(shí)候了/早就應(yīng)該……了 [從句使用虛擬語氣]
It is high time we stopped talking about this silly question.
我們早就該結(jié)束討論這個(gè)愚蠢的問題了.
54.It is no use doing sth. 做某事是毫無用處的
It is no use talking without doing.
光說不做是沒有用的.
55.It is （very） difficult to…………（非常）困難
It is very difficult to foretell what the world will be like in the future.
很難預(yù)測將來的世界會怎樣 [ foretell v. 預(yù)言；預(yù)測].
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