21、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。

22、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。

23、It pays to V ～ (……是值得的。)

例句：It pays to help others.帮助别人是值得的。

24、be based on (以……为基础)

例句：The progress of thee society is based on harmony.社会的进步是以和谐为基础的。

25、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。

26、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。

27、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。

28、Get into the habit of Ving=make it a rule to V (养成……的习惯)

例句：We should get into the habit of keeping good hours.我们应该养成早睡早起的习惯。

29、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。

30、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 it is to keep our promise!遵守诺言是多么重要的事!