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。
here 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。
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。
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。