51.It is believed that………人們認為…….

　　?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…………相當容易.

　　?It is easy enough to copy and paste; but you should write something by yourself.

　　?抄襲（復制十粘貼）非常容易,但是你應該自己寫一些東西.

　　53.It is high time …… 現(xiàn)在是……的時候了./早就應該……了. [從句使用虛擬語氣]

　　?It is high time we stopped talking about this silly question.

　　?我們早就該結束討論這個愚蠢的問題了.

　　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.

　　?很難預測將來的世界會怎樣. [ foretell v. 預言;預測]

　　56.It sounds like ………聽起來好像…….

　　?It sounds like a good idea. 聽起來這主意不錯.

　　57.It takes / took / will take sb. some time / money to do sth. 某人花/花了/將花多長時間/多少錢做某事.

　　?It took me years of hard work to speak good English.

　　為了講一口流利的英語,我花了多年時間刻苦操練.

　　58.It wasn't until…that…… 直到……才…….

　　?It wasn't until yesterday that I got your letter.

　　我直到昨天才收到你的來信.

　　59.It's a great pleasure to…………（感到）非常愉快.

　　?It's a great pleasure to do business with you.

　　跟你做生意我感到非常愉快.

　　60.Make sure to do sth.-定要做某事.

　　?Make sure to leave a note if you go out.

　　你出去的話一定要留個條.