1、人教课标高一 必修4Unit 4,Grammar,Body language,一: V-ing 形式由 “doing” 构成, 其否定形式是 “not doing”, V-ing可以带宾语或状语构成V-ing短语, 没有人称和数的变化, 但有时态和语态的变化。,V-ing 形式,(not) doing,(not) being done,(not)having done,(not)having been done,V-ing 形式在句中作定语和状语是本单元的学习重点。,1. 作定语 V-ing 形式可以单独充当名词的前置修饰语, 这时有两种情况。-ing形式表示 “供作.之用”的意思, 这类作定
2、语的-ing形式过去叫动名词。 A swimming pool = a pool for swimming,A sleeping car,= a car for sleeping,2) -ing形式表示 “.的” 意思, 过去叫 现在分词 A sleeping child working people the rising sunzxxk,-ing形式短语作定语时一般放在它所修饰的名词之后, 相当于一个定语从句。如: They are visitors coming from several countries. The boy standing there is a classmate of
3、 mine.,2. 作状语 可以表示时间, 原因, 结果, 条件, 行为方式或伴随动作等。,Using your head, youll find a good way.,条件,1) Four people entered the room looking around in a curious way. = Four people enter the room and looked around in a curious way. (伴随动作)2) Being poor, he couldnt afford a TV set.,(原因),3) Working hard, youll sure
4、ly succeed.,条件,4) The boy sat in front of the farm- house, cutting the branch.,伴随,5) He came running back to tell me the news.,方式,6) (When) Hearing the news, he got frightened. = When he heard the news, he got frightened. (时间, 可以在分词前保留when),7) The child slipped and fell, hitting his head against the door.,结果,
