选修10《Warming up、Pre-reading、Reading、Comprehending》公开课教案下载

选修10《Warming up、Pre-reading、Reading、Comprehending》公开课教案优质课下载

Step 2 Grammar The revision of v-ing

V-ing 形式

一: V-ing 形式由 “do＋ing” 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。

(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

单个的V-ing 作定语修饰名词，一般都要前置，这时有两种情况。

V-ing形式表示 被修饰词的作用或用途。

A swimming pool = a pool for swimming

A sleeping car= a car for sleeping

2) V-ing形式表示 被修饰词的动作或所处的状态，相当于一个定语从句。

A sleeping child

working people

the rising sun

动词 -ing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 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, you’ll find a good way.

around in a curious way.

= Four people enter the room and looked around in a curious way.

( 伴随)

2) Being poor, he couldn’t afford to buy a TV set.

3) Working hard, you’ll succeed.