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SAT语法 逻辑主语Helen never submits anything to an eitditor until

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SAT语法 逻辑主语
Helen never submits anything to an eitditor until revising several times.
答案是revising 错,是因为动作发出者不明么?但是主语是Helen,revising 的逻辑主语不是Helen吗?
在一些连词后面可以加上动词的-ing / -ed形式,前提条件是逻辑主语一致.
本题中,revising的逻辑主语是Helen,符合条件,但是,在until的分句中时间状语为several times,时态应该用完成时,即until she has revised several times,因此应该把revising改成having revised才对.
又如:They didn’t leave until having finished their job.干完活后他们才离开.