初中英语语法-状语从句

定义： 状语从句在复合句中作状语，修饰动词、形容词或副词等 位置：句首，句末 分类：七大类 你能说出哪几类状语从句？ 时间状语从句 让步状语从句 原因状语从句 结果状语从句 目的状语从句 条件状语从句 地点状语从句 as “一边......一边......” ；“随着......随着...... ☆ 表示某事一发生，另一事立即发生 As the sun rose, the fog disappeared. ☆ 表示在某事发生的过程中，另一事发生 Just as he was speaking there was a loud explosion. ☆ 两个动作同时发生 Helen sang a song as she washed. ☆ “随着......” 一个行为是另一个的结果 As she grew older, she became more beautiful. 在...的时候；在...的同时 While I was standing at the window, I saw several boys running along the street. While John was watching TV, his wife was cooking. 谓语动词必须是延续性动词 当......的时候 I worked for a foreign company when I was in Shanghai. When he arrives, I’ll call you. 谓语动词可以使延续性也可以是非延续性 We clean the classroom before we leave school. She showed me many beautiful stamps after I got to her home. 在......之前 主句的动作发生在从句之前 在......之后 主句的动作发生在从句之后 since It has been + 时间段+ since （自从......有多长时间了） It has been 6 years since she left her hometown. I have worked in this company since I graduated from th