天下手游2017跳跳乐:The book was so good that he had read it for 3 hours (before) he realized it. befroe 能换成until么

来源：百度文库编辑：杭州交通信息网时间：2024/05/05 14:17:29

You must wait here ( unitil )your mum comes to fetch you. 这里的until呢，能换before么？二者的区别是什么？

前面用否定句，后面就可以换成until了。一楼点到了这个意思，但为何说是可以互换的呢。在这里是不可以换的。
请看下面的例句：
He did not relize his sister was so beautyful until he saw her in the summer of 2005.

这里可以互换。
until有“直到……”的意思，通常和not组成词组一起连用，not....until表示直到……才。
before是在……之前的意思。

在什么之前和到什么为止啊。可以互换

我觉得前面那个不能吧后面那个可以

改错1.She brought the book to her home.2.Zhang lin was a good girl.So was she. The book was so good that he had read it for 3 hours (before) he realized it. befroe 能换成until么 He was a good runner. So he _____ escape fromm the police. The police was very good. P9 9. The book was so interesting that he had read it for three times _____ he relized it. The carve was dark so he a good book is the best companion的翻译 a good book is the best companion的翻译 a good book is the best companion的翻译 ( )1.The man was so tired____ he____ asleep quickly.