英语中时间和介词的搭配

1．多少年，多少天以前，用这个词“ago”, 比如说，三年以前：three years ago. 几星期以前， weeks ago, 一个半月以前：one month and a half ago，下面，我们来看几个例句：

I bumped into my ex-boyfriend days ago. 我几天前无意间撞见了我的前男友。

Marry dropped out of school months ago. 玛丽几个月前辍学了。

We settled down in New York 2 weeks ago. 两星期前我们在纽约定居下来。

2．多少年，多少天以后，用介词“in”，如：几年后：in years, in a couple of years, 5个月后：in 5 months, 10天后：in 10 days:

I’ll let you know our final decision in a week. 一个星期后，我会通知你我们的最后决定。

We’re moving to Guangzhou in 2 days. 两天后，我们就要搬去广州了。

3．在。。。时间以内： within, within 2 weeks, within one year, within 7 months

The quotation is subject to your confirmation by fax within one week. 此报价以你以传真形式在一周内确认为有效。

4.“before”, “after”这两个词怎么用呢？，它们的后面可以接从句，：“before” 在某事发生之前，“after”在某事发生之后：

I was only a clerk before I came to Guangzhou. 在我来广州之前,我只是个小文员.

We went to a concert after we finished our work. 我们下班后去听了音乐会.

“before”, “after”这两个词后面还可以接名词：

I would like to have a chat with you before meal. 吃饭前我想和你谈一下。

I’ll meet you at the entrance after class. 课后我们在入口处见。