can,t与don,t区别,didn,t与could,t区别

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/17 22:56:49

can't是不可能的意思.例：I can't move that box because it is so heavy.
don't是助动词.例：I don't know.
did't是don't的过去式,在一般过去式的句子中改否定句是常用到.例：He worked out this problem by himself.的否定句是He didn't work out this problem by himself.
couldn't是can't的过去式.could也有时候表示委婉语气.例：Could you give me that pen?

could't与couldn't的区别? don't can't区别, 请问王老师can't与don't的区别? I don't 与 I can't 的区别 don't与can't的区别,怎么用? can't与couldn't的区别 couldn't与can't的区别! can't与couldn't区别, didn't,dosen't,don't用法区别 l don't know 与l didn't know的区别 i didn't understand 与 i don't understand的区别? didn‘t be 与weren't有什么区别