时间状语从句的主句和从句如何区分.
问题描述：
时间状语从句的主句和从句如何区分.
答
举例说明
1.When he knows the result(从句）, he will be happy（主句）
2.when i arrived (从句）, i found the door open.（主句）
3.when he came in (从句）, i was watching TV (主句）
4.I won't leave (主句）until he finishes the work(从句）
5.As soon as he arrived(从句）, he began to work(主句）
6.while he was in London(从句）, he made a lot of friends.