2013年公共英语四级考试语法解析：现在进行时

现在进行时.通常用“now”.

形式： be verb ing

eg: I am(not) doing my homework.

You/We/They are(not) reading.

He/She/It is(not) eating.

动词 —ing 的形式

Most verbs ing walk—walking

Verbs ending in e -e ing come—coming

Short verbs ending in a vowel a consonant run –running swim—swimming