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1、Those who ~~~ 例句：Those who violate traffic regulations should be punished. 违反交通规定的人应该受处罚。 2、There is no one but ~~~ 例句：There is no one but longs to go to college. 没有人不渴望上大学。 3、be forced/compelled/obliged to V 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。 4、It is conceivable that 句子 It is obvious that 句子 It is apparent that 句子 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。 5、That is the reason why ~~~ 例句：Summer is sultry. That is the reason why I dont like it. 夏天很热。那就是我不喜欢它的原因。 6、For the past 时间，S 现在完成式 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。 7、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. | 
