9A Unit4 Growing up
Grammar
A
before
在...之前(before+后发生的动作)
after
在...之后(after+先发生的动作)
before/after+句子
=before/after doing(前后主语一致)
Before/After he graduated, he joined the club.
Before/After graduating, he joined the club.
当...时候
两长用while
My mother is cooking, while my father is watching TV.
两短用as
As I got home, the bell rang.
一长一短
长(when/while/as)
When/While/As people were sleeping, the earthquake happened.
短(只用when)
People were sleeping, when the earthquake happened.
Phrases:
慢跑go