理工类辅导资料：常见句型分析
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.
54.It is no use doing sth. 做某事是毫无用处的
It is no use talking without doing.
光说不做是没有用的.
55.It is (very) difficult to…………(非常)困难
It is very difficult to foretell what the world will be like in the future.
很难预测将来的世界会怎样 [ foretell v. 预言；预测]。