我们绝对不能忽略知识的价值。
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.