if引导的条件状语从句于when引导的时间状语从句有何共同之处?
问题描述：
if引导的条件状语从句于when引导的时间状语从句有何共同之处?
比如：if you go to my home,you'll have a great time.
when you asked him about the question,the teacher told you to stand.
答
都是从句为过去式.