when引导的时间状语从句

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. We'll 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
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”。
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I'll 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 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。
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。