1、when 引导的时间状语从句 I will come here tomorrow. I will come here at 3:00. I will come here in the morning. I will come here when you are not busy. 时间状语若为 句子 ，则该句称为时间状语从句。时间状语从句 就是在复合句中表示主句动作发生时间的状语从句。when引导时间状语从句时，意思是 “当 的时候 ”。Ill call you when I get there.我到那里时就给你打电话。When I got home, my wife was cooking
2、dinner.我到家时，我妻子在做晚饭。The boy will be a writer when he grows up.这个男孩长大时将成为一名作家。Attention 1， 主句从句时态要一致 主句过去 从句过去 When he was 7, he could swim. 主将从现 主祈从现 主情从现When he comes , we will start the meeting.When you are ill, you must see a doctor.Be careful when you cross the street(大街 ).2, 主句从句位置问题when从句放主句前后都可，从句防主句之前需逗号隔开。1. Well start out _ the teacher comes.A. when B. while C. though D.but 2.-Please remember to say goodbye to Mr.Smith when you _ tomorrow.-Sure, I will.A. leave B. will leave C. left D. have left
