二十一.For the past + 时间，S + 现在完成式.。.(过去年来，一直)
例句：For the past two years, I have been busy preparing for the
examination。
过去两年来，我一直忙着准备考试。
二十二.Since + S + 过去式，S + 现在完成式。
例句：Since he went to senior high school, he has worked very hard。
自从他上高中，他一直很用功。
二十三.It pays to + V (是值得的。)
例句：It pays to help others。
帮助别人是值得的。
二十四、.be based on (以为基础)
例句：The progress of the society is based on harmony。
社会的进步是以和谐为基础的。
二十五.Spare no effort to + V (不遗余力的)
We should spare no effort to beautify our environment。
我们应该不遗余力的美化我们的环境。
二十六.bring home to + 人 + 事 (让明白事)
例句：We should bring home to people the value of working hard。
我们应该让人们明白努力的价值。
二十七.be closely related to (与息息相关)
例句：Taking exercise is closely related to health。
做运动与健康息息相关。
二十八.Get into the habit of + Ving
= make it a rule to + V (养成的习惯)
We should get into the habit of previewing and reviewing。
我们应该养成预习和复习的习惯。
二十九.Due to/Owing to/Thanks to + N/Ving, (因为)
例句：Thanks to his encouragement, I finally realized my dream。
因为他的鼓励，我终于实现我的梦想。
Thanks to Miss Qins help, I passed the examination。
多亏秦老师的帮助，我通过了考试。
三十.What a + Adj + N + S + V!= How + Adj + a + N + V!(多么!)
例句：What an important thing it is to keep our promise!
How important a thing is to keep our promise!
遵守诺言是多么重要的事！
What an important thing it is to be honest!
How important a thing is to be honest!
诚实是多么重要的事！