现在进行时: I ______(do) my homework now.

过去进行时：I_____ (do) my homework at 9:00 yesterday.

介词后-ing : I am good at ________(sing).

How/ What about________(swim)?

动名词做主语(谓语动词用单数)：______(run) is good for us.

作标语（可转化成主语）：My hobby is_______(play football).

作宾语（动词后 doing）: I finish______(do) my homework.

She likes______(go) for a walk with her parents.

作定语（放在修饰词的前面表用途、功能）：

This is a _______(swim) pool.

There is a _____(read) room in our school.

Take a _____(shop) bag,please.

现在分词做定语: China is a ______(develop) country.

（主动，前后） The girl_____(stand) behind the tree is my mother.

（形容词）作表语作用令人...的(物) The book is ______(interest).

作宾语(补充说明，主动): I found them _____(paint) the wall.

作状语（主动动作与谓语动词同时发生）：He went out of the school,_____(talk) and _____(laugh).

固定搭配： be busy doing 忙于做某事

can't help doing 禁不住做某事

feel like doing 想要做某事