1.一般现在时:表示现在经常发生的动作或状态,如 I like apples.
2.一般过去时:表示过去发生的动作或状态,如 I went to the park yesterday.
4.现在进行时:表示正在进行的动作,如 I am watching TV now.
5.过去进行时:表示过去某一时刻正在进行的动作,如 I was playing football at that time.
7.冠词:如 a, an, the
8.介词:如 in, on, at, under, behind, near
9.代词:如 I, you, he, she, it, they