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]
56.It sounds like ………听起来好像……。
It sounds like a good idea. 听起来这主意不错
57.It takes / took / will take sb. some time / money to do sth.
某人花/花了/将花多长时间/多少钱做某事
It took me years of hard work to speak good English.
为了讲一口流利的英语，我花了多年时间刻苦操练
58.It wasnt until…that…… 直到……才……
It wasnt until yesterday that I got your letter.
我直到昨天才收到你的来信
59.Its a great pleasure to…………（感到）非常愉快
Its 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.
你出去的话一定要留个条
61.no matter what…… …无论什么……
No matter what happens， Ill always stand by you.
不论发生什么事，我都永远支持你
62. Not until……did…… 直到……才…… [倒装句型]
Not until I began to work did I realize how much time I had wasted.
直到我开始工作，我才意识到我已蹉跎了很多岁月
63. Now that……，…既然/由于……，……。
Now that we are alone， we can talk freely.
既然我们单独在一起，就无拘束地聊聊吧
64.On the condition that…… …条件是……
You can leave school early， on the condition that you finish your assignment first.
你可以早点离校，条件是你得先做完作业
65.On the contrary， …… 正好相反，……。
Their criticism did not discourage me. On the contrary， I worked even harder.
他们的批评并没有使我感到气馁，相反，我比以前更加努力了
66.On （the） one hand……， on the other （hand）， …… 一方面……，另一方面……。
On (the) one hand I admire your ability， but on the other (hand) I distrust your judgment.
一方面我钦佩你的才能，但另一方面我不相信你的判断力
67.One of the 形容词最高级 名词 is… 最……之一的就是……
One of the most impressive pieces of writing is Hamlet.
给人印象最深的着作之一就是《哈姆雷特》
68.Something must be done to………必须采取措施……
Something must be done to change our current examination system.
必须采取措施来改革我们现行的考试制度
69.Thanks to…… 由于…/多亏…。
Thanks to his parents encouragement and support， he finally realized his dream.
多亏了他父母的鼓励与支持，他终于实现了他的梦想
70.The reason why…… is………的原因就是……
The reason why he made such a great achievement is his perseverance.
他之所以取得如此伟大的成就，原因是他坚持不懈