归纳1：动名词作主语的用法

动名词作主语时，句子有两种形式：

①动名词直接置于句首主语的位置上。

②用形式主语it，把真正的主语--动名词结构移置句尾。但这种句子形式有一定的限制，作表语的只能是某些形容词或少数名词，如useful，useless，good，fun；no use，worth等。

Part 2. Get the Ss to underline the sentences with v-ing form and then say out their function of v-ing forms.

A. I can't avoid going．

Have you considered looking for one special friend?

Do you feel like having a walk with me after supper?

People couldn't help laughing foolish man．

B. we intended go outing on Sunday.

Let's start singing to song.

After a warm discussion, we all continued doing our homework.

C. I remember posting the letter．

Let's try doing the working in some other way．

Your plan would mean spending hours．

We stopped talking．

归纳2： 动名词作宾语的用法

1．有些动词或短语动词后常用动名词作宾语。如admit, appreciate, avoid，can't stand（不能忍受）, consider，delay, devote ... to, dislike enjoy，escape, excuse, feel like, finish, forgive, get down to, give up, imagine, insist on, keep (on), look forward to, mention, mind, miss（错过）, pay attention to, practice, put off, stick to, suggest等等。

2. 在begin, continue, love, like, hate, prefer, intend, start后用动名词和用不定式作宾语均可，意义没有多大区别。

3. 动词forget, go on, mean, regret, remember, stop, try, be used to, can't help后跟动名词和跟不定式区别较大，须注意。 forget, regret, remember后跟动名词，动名词表示已经发生的动作；后跟不定式表示将要发生的动作。

Part 3. Get the Ss to underline the sentences with v-ing form and then say out their function of v-ing forms.

We've got to think of ways of changing people's habits.

I apologize for being so angry with you.

After being away for several years，it is a strange experience to return to the place you were born and brought up．