can't与couldn't 的用法I can't give you anythingI couldn't give you anything那句是对的啊这两句意思有不同吗?

分类: 作业答案 • 2021-12-19 16:30:40

问题描述：

can't与couldn't 的用法
I can't give you anything
I couldn't give you anything
那句是对的啊这两句意思有不同吗?

答

couldn't 是can`t的过去式和虚拟式.在实际应用中,could`t是can`t的礼貌用法,加上有虚拟的含义,所以语气也没有那么强烈.表示否定的话,can't比couldn't的否定意味更加重一点.肯定的话,could当然比can要委婉啦.所以,I c...

can't与couldn't 的用法I can't give you anythingI couldn't give you anything那句是对的啊 这两句意思有不同吗?