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。liuxuepaper.com