十五、It is time + S + 过去式 （该是...的时候了）

例句：It is time the authorities concerned took proper steps to solve

the traffic problems.

该是有关当局采取适当的措施来解决交通问题的时候了。

十六、Those who ~~~ （...的人...）

例句：Those who violate traffic regulations should be punished.

违反交通规定的人应该受处罚。

十七、There is no one but ~~~ （没有人不...）

例句：There is no one but longs to go to college.

没有人不渴望上大学。

十八、be + forced/compelled/obliged + to + V （不得不...）

例句：Since the examination is around the corner, I am compelled to

give up doing sports. 　

既然考试迫在眉睫，我不得不放弃做运动。

十九、It is conceivable that + 句子 （可想而知的）

It is obvious that + 句子 （明显的）

It is apparent that + 句子 （显然的）

例句：It is conceivable that knowledge plays an important role in our

life.

可想而知，知识在我们的一生中扮演一个重要的角色。

二十、That is the reason why ~~~ （那就是...的原因）

例句：Summer is sultry. That is the reason why I don‘t like it.

夏天很燠热。那就是我不喜欢它的原因。

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 thee society is based on harmony.

社会的进步是以和谐为基础的。