can+t+couldn+t

@郁良5876:can't和couldn't的用法和意思有什么不同,他们后面跟什么?都是原型吗? -
郝甘13678155179…… 1,can could 都是情态动词,其后都加动词原形,can't couldn't 也一样,都加动词原形 2,同时could 是can 的过去式,二者又可表示具备"能力", can指现在具备的能力,could指过去具备的能力

@郁良5876:can't与couldn't的区别 -
郝甘13678155179…… can't/couldn't表示推测时,意思是“不可能...”,语气非常坚决的否定推测.根据动作发生的时间,一般分为以下三种情况:1)进行式(对正在发生的事情的否定推测):can't be doing sth如:It's already ten o'clock. My father can't be sleeping ...

@郁良5876:can't和couldn't的意思和用法有什么不同?后面跟什么?都是原型吗? -
郝甘13678155179…… 用法意思几乎相同 后面都是接原型 没有例外情况 区别是 couldn't 委婉 而can't较为直接

@郁良5876:英语问题,关于can't和couldn't的. -
郝甘13678155179…… 两个都是情态动词 情态动词一般来说不会因为时态而改变写法 如can should must等 但是这个是特别的 could可以说是can的过去式 eg.I can't remember it. / I couldn't remember it before.

@郁良5876:can't和couldn't的区别 -
郝甘13678155179…… can是一般现在 could是一般过去,另外,could表示请求,态度比较恳切

@郁良5876:could/couldn`t和can/can`t在用法上有何区别? -
郝甘13678155179…… 1、could/couldn`t 这是过去时. 2、can/can`t 这是一般现在时. 1主要是用在对过去的事情进行说明的时候.比如说,A问B,你昨天为什么没有去打篮球?B回答:我不能逃课.翻译过来就是:I couldn't skip classes. 2主要是用在一般情况,包括现在和将来.比如:A说:今天放学后去我家玩吧.B说,不好意思,不行,我得去超市.Sorry,I can't, I have to go to the suppermarket.

@郁良5876:couldn't与can't的区别! - 作业帮
郝甘13678155179…… [答案] 在请求语句里面couldn't比can't较委婉 在一般语句里面couldn't表过去时can't表现在时

@郁良5876:can't/couldn't have done的意思 是 本来不可能做某事结果做了 还是 表示过去动作不可能发生? 这两者又有 -
郝甘13678155179…… 表示不可能做某事但是结果做了....这个通常用的是couldn't have done,不是很常见can't而且这个couldn't have done 也不是特别常见的...用到的情况很少..

@郁良5876:用can,can't,could,couldn't填空.
郝甘13678155179…… 1、can can2、 couldn 't 3、could 4、can 't5、can ..求采纳.纯脑分析.、

@郁良5876:may not/can't/couldn't/needn't/mustn't举例区别意思和用法 -
郝甘13678155179…… may not 语气较弱,”可以不”,You may not finish your homework; can't ”不能”; You can't be too serious;问句回答时:Can I go out to play? No, you can't. 或做may问句的回答:May I sit here? No, you can't.; couldn't 语气较委婉,”不能”,常...

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