It won't be __he catches up with us. A.before long B. long before

来源:百度知道 编辑:UC知道 时间:2024/06/08 04:52:10
The children were enjoying their dinner___a stranger knocked at the door.
A. when b.while
when 和while 的区别是什么?
这两个词组分别是什么意思啊,这个句子怎么翻译啊

BA

while接进行时,常表是一个过程,如 The children were enjoying their dinner while a stranger was knocking at the door.

意思就是那个stranger一直在他们吃饭的时候不停地敲.

B

A
WHILE后面的从句一般用进行时..
WHEN后面的从句用过去时