“这句话是一般过去式,decide为什么不用过去式decided” 因为句子中有情态动词 could ,因为情态动词后必须用动词原形,could 是can的过去式,所以本句的时态已经在 could上体现出来了.
请问英语过去式的语法Why couldn't he decide
3个回答
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