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17、 hellip; hellip;不得不 hellip; hellip; be +forced +to +doSince the examination is around the cor be +forced +to +do Since the examination is around the corner, I am forced to give up doing sports. 18、明显地， It is obvious that + 句子。 It is obvious that what a bad boy he is. 19、那就是 的原因(用途)。 That is the reason why Sam is simple-minded. That is the reason why I don t like him. 20、过去 年来， 一直 For the past + 时间，某人/某物+现在完成时。 For the past two months, I have watched 50 movies. 21、 是值得的。 It pays to +do sth It pays to be honest. 22、 不遗余力的 spare no effort to +do sth. We should spare no effort to make our mother town beautiful 23、 与 密切相关。 sth be closely related to sth. Taking exercise is closely related to health. | 
