We can't live without air and water.为什么用and不用or啊?
来源:百度知道 编辑:UC知道 时间:2024/06/03 19:54:30
We will die without air or water.为什么这句又用or?
第一句是双重否定表肯定,所以后面连接词用AND,
而第二句是否定句,或者的意思。
水和空气是生存必须的,2者并存否则没法活,所以用and。
少了其中任意一样,少水或者少空气,都得挂了,所以or就可以。
这里表达的是两个一起~~少了一个都不行~~
or是或者~~只是其中之一
不是选择或者并列的问题,而是他们都表示并列关系,并且“否定句表示并列时用or,双重否定或者肯定时表示并列用and”
or 表选择
and做连词
or
两者之一缺少谁都不行
and
则为两者都缺才成立
why can't we use english to find mp3?
We can't live without water ( )air
We can't _______anaother 100 kilometers any more
We can't ___ another 100 kilometers any more.
but,we can't stay with you forever
We can't study or work___without healthy body.
we can't get much higher什么意思?
u know, we can't go back.
There isn't much _____ we can do
we have a good request we can't fail to obey it !we have a good request we can't fail to obey it !