Wastewater from factories polluted the river为什么用polluted

我们要坚强 1年前已收到2个回答举报

edisionmoe 幼苗

共回答了23个问题采纳率：82.6% 举报

pollute 是这个句子的谓语动词,“污染”的意思.而这个污染已经发生了,所以用了过去时polluted.
翻译：来自工厂的废水污染了河水.

1年前

nnSHOW 幼苗

共回答了8个问题举报

工厂排放的废水污染了河流。用的是动词的过去式。

1年前

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