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选修8《Learning about Language》公开课PPT课件优质课下载
当状语从句的主语和主句的主语一致时，从句的主语和be动词可以省略。
过去分词可作_____
状语
Seen
状语从句
Rule1：
When it is seen at night, our school looks more beautiful.
As it was built in 2004, our school is very young.
Rule2：
过去分词作状语时：
过去分词的逻辑主语与主句的主语必须______
过去分词与主语形成 _____关系
被动
Seen
Built
一致
1. 过去分词作状语,表示时间 相当于一个时间状语从句
When it was fixed(安装) with new lights, the long passage(长廊) is bright now.
(When) fixed with new lights, the long passage is bright now.
2. 过去分词作状语,表示原因 相当于一个原因状语从句
As it is polluted, the air is hard to breathe.
Polluted, the air is hard to breathe.
3. 过去分词作状语,表示条件 相当于一个条件状语从句
If it is decorated with more lights, our school will be more beautiful.
(If ) decorated with more lights, our school will be more beautiful.