We couldn't watch until our homework was finished.英语问题
来源:百度知道 编辑:UC知道 时间:2024/05/27 09:51:54
为什么用couldn't 换成cann't 行不行 could 和 can 有什么区别?
区别在于语气和事态两种情况
语气上couldn't比can't委婉点 客气点
时态上couldn't是can't的过去形式
你是句话属于后者 因为后面有was 所以为了时态一致要用couldn't
前后时态要一致,不能换,因为从句用WAS ,所以要用过去时COULDN‘T
can 一般是说能力 比如说我不会游泳就是can't 或者说我会做饭就是can
could 这里是说无法,但是这个能力不是本身的,是因为外界的(没有写完作业) can 是本身的能力
could是过去式里用的,过去式里不能用cant.
could 在假设语态里也要用到,例如
i could have done my homework last night. 意思就是我其实可以在昨天晚上完成作业。
不可以,以为后面是was,前后事态要一致。
意思为能,可以的时候,could是can的过去式。意思为可能的时候,没有太大区别,could的可能性比can小
这是一个时间状语从句!主句跟从句的时间状语必须一致!后面的是was前面的当然只能是can的过去式啊!所以couldn't是不可以换成cann't的!
couldn't翻译
couldn't是什么意思
We couldn't work it out .里的"it"指代什么?
we couldn't eat in a restautant because __of us had __money on us.
We couldn't take a taxi because______of us had _______money on us.
Without your _______,we couldn't finish the work so quickly.
We couldn\'t agree on a date when to meet中to meet怎么不用we meet
Couldn't find NTLDR
couldn't 和 shouldn't
1. We couldn't eat in a restaurant because ___ of us had ____ money on us.