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必修4《Learning about Language》PPT课件优质课下载
being done
完成式
having done
having been done
一、-ing形式作定语
1. 单个动词的-ing形式作定语位于被修饰名词的前面，既可以表示被修饰者的作用或功能，也可以表示被修饰者的动作或状态。如：
building materials
= materials for building 建筑材料
-ing形式作定语, 宾语补足语和表语的用法
drinking water
= water for drinking 饮用水
a walking stick
= a stick for walking 手杖
a reading room
= a room for reading 阅览室
a writing desk
= a desk for writing 写字台
tiring music
= music that is tiring 烦人的音乐
a surprising result
= a result that is surprising
一个惊人的结果
2. -ing形式短语作定语时, 放在所修饰的名词之后, 并且在意思上相当于一个定语从句。如：
They lived in a room facing the street.
= They lived in a room that faces the