can’t / couldn’t have
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can’t / couldn’t have
can’t / couldn’t have
can’t / couldn’t have
意为:“过去不可能做了某事.”
不可能发生...
过去时态
不能做但是已经做了......
不可能做了某事。表示推断。
must do 表对现在、将来肯定猜测
must have done 表对过去肯定猜测
can't do 表对现在、将来否定猜测
can't have done 表对过去否定猜测,就是他不可能做过某事
can’t / couldn’t have
couldn't与can't的区别!
can't与couldn't的区别
can't和couldn't区别?
--that car must have cost a lot of money.--on,no._________请问否定回答用 it didn't 还是用 it can't.不过记得是这样的 must have v-ed 否定形式为:can’t / couldn’t have v-ed,为什么又用it didn't 还是与can't/couldn't hav
表示否定推测只能用can't 和 couldn't
表示否定推测只能用can't 和 couldn't
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
may not/can't/couldn't/needn't/mustn't举例区别意思和用法
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As she was very weak,she couldn't move这里的couldn't与can‘t区别,couldn't表示过去时?
The box was so heavy that I couldn't lift it .中为什么用couldn't 而不用can't
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I can do anything,but I couldn't do everything.为什么后半句can要变成couldn't
Last year ,he couldn't drive a car ,but now he can .为什么选couldn't,can?还有例句.
英语翻译I couldn't agree moreI don't agree moreI can't agree more
She ( )see,and she ( )hear lasShe ( )see,and she ( )hear last year.A:couldn't /can't.B:couldn't /couldn't .C;can't /can't.
用can、can't、could、couldn't写一篇关于自己的短文 不少于60词