He couldn't understand spoke English before he moved to Canada.为什么speak和move用过去时?
一句话中不是只有谓语动词表现时态就可以了么?为什么speak和move都要用过去时?
人气：435 ℃ 时间：2020-04-18 19:57:34
解答
spoken是过去分词做定语,修饰English,表示口语,moved是在时间状语从句before he moved to Canada中做谓语动词.主句的谓语是 couldn't understand
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