she was watching TV when her mother was doing the washing.为什
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解决时间 2021-08-21 03:26
- 提问者网友:酱爆肉
- 2021-08-20 08:51
she was watching TV when her mother was doing the washing.为什么wathing 和doing前面都要加was?
最佳答案
- 五星知识达人网友:老鼠爱大米
- 2021-08-20 09:46
过去某一时刻中同时发生的动作,过去进行时
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