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.
