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。
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。
