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标题: svo,doing sth形式 [打印本页]

作者: anwear    时间: 2012-4-28 10:13
标题: svo,doing sth形式
sth has done sth, doing sth 对吗?xdf老师说的前后要时态一致,也就是说doing和done要同时,但是有些题说这种结构明显错误,有些说对。
sth had done sth,doing sth 这种顺便也请nn解答下。




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