as i (walk) down the street,i (meet) Tom

问题描述:

as i (walk) down the street,i (meet) Tom
讲括号里的单词改为正确形式
顺便讲一下as的用法
as的用法!

最好用过去时吧,As I was walking down the street,I met Tom.此处as相当于when,意为“当……时”.