he has been a soldier for three years.改为同义句：It is three years --------- ---------- ---------
the army.
人气：382 ℃ 时间：2019-09-24 05:06:51
解答
It is /has been three years since he became a soldier.
固定句型：It is /has been +一段时间+since.不管是用is还是has been ,since从句都用过去时
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