When引导时间状语从句的时态问题

请问这句话 Their mothers were looking at the children when they played. 正确吗？play是延续性动词，为什么不能用过去进行时were playing？

Their mothers were looking at the children when they played.

Their mothers were looking at the children when they were playing.

Their mothers looked at the children when they played.

look at和play 都是延续性非终结动词。主句和从句可以都用一般体，或者都用进行体，表示主句动词和从句动词平行发生。

第一句主句用进行体，从句用一般体，暗示主句的动作时间长于从句的动作。即孩子们离开母亲们，走到游戏场所玩，然后回到母亲们身边整个过程都在母亲们的视线下进行的。play只是其中的一段。如果主句和从句用相同的时态，则look at和play是平行的，没有暗示play之前和之后，母亲们是否也看着孩子。

曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2021-01-27 13:32

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