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couldn't是can't的过去式吗

来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/15 10:23:12
couldn't是can't的过去式吗
couldn't的原型是can't吗?
0 - 离问题结束还有 14 天 23 小时
couldn't的原型是can't吗?
couldn't是过去式吗
couldn't可以是can't的过去式,也可以单独用.单独用时意思与can't差不多,但语气更委婉一些.
couldn't是can't的过去式吗 couldn't是过去式吗 couldn't 是can't的过去词吗? I couldn't hear you clearly.这里的could是can的过去式吗?还是作助动词,表示允许、许可 can't与couldn't的区别 couldn't与can't的区别! can't与couldn't 的用法 can’t / couldn’t have can't和couldn't cannot can't couldn't mustn't的问题 can't的过去式是什么? 请问英语过去式的语法Why couldn't he decide