一、ing形式

I like flowers.

I like drinking milk.

英语动词的-ing形式

1、动名词

1）作主语：

   Smoking is harmful. 

   Swimming is good for health.

2) 作宾语：

   A: 作动词的宾语

       I like swimming.

   B: 作动词的宾语

       I am good at swimming.

3) 作定语：

   reading room 阅览室

4）作表语：

   My plan is going abroad.（不是现在进行时。不合逻辑）

二、不定式

to work   to eat 

1、作主语：

   To work is interesting.

2、作宾语：

   I want to know.

3、作定语(后置)：

   I want something to eat.

4、作状语（目的）：

He will come to see me.

5、作宾补：

She asks me to help her.

6、作表语(将来时)：

    It is to rain.