题目

用“when.” 造句有几种句式?

提问时间：2021-04-09

答案

一般是下面的三种：
He could swim when he was 3 years old.他3岁时会游泳.
He was doing his homework when his father came home..当他父亲回家时他正在做作业.
I will tell you when he comes back .当他回来时我会告诉你.