1、一般現(xiàn)在時 表示普遍、經(jīng)常性的或長期性的動作時使用一般現(xiàn)在時，它有：
Be 動詞：
She’s a worker. Is she a worker? She isn’t a worker.
情態(tài)動詞：
I can play the piano. Can you play the piano? I can’t play the piano.
行為動詞：
They want to eat some tomatoes. Do they want to eat any tomatoes? They don’t want to eat any tomatoes.
Gina has a nice watch. Does Gina have a nice watch? Gina doesn’t have a watch.
2、現(xiàn)在進(jìn)行時
表示動詞在此時正在發(fā)生或進(jìn)行就使用進(jìn)行時態(tài)，結(jié)構(gòu)為sb be v-ing sth + 其它.
I’m playing baseball. Are you playing baseball? I’m not playing baseball.
Nancy is writing a letter. Is Nancy writing a letter? Nancy isn’t writing a letter.
They’re listening to the pop music. Are they listening the pop music? They aren’t listening to the pop music.
Be 動詞：
She’s a worker. Is she a worker? She isn’t a worker.
情態(tài)動詞：
I can play the piano. Can you play the piano? I can’t play the piano.
行為動詞：
They want to eat some tomatoes. Do they want to eat any tomatoes? They don’t want to eat any tomatoes.
Gina has a nice watch. Does Gina have a nice watch? Gina doesn’t have a watch.
2、現(xiàn)在進(jìn)行時
表示動詞在此時正在發(fā)生或進(jìn)行就使用進(jìn)行時態(tài)，結(jié)構(gòu)為sb be v-ing sth + 其它.
I’m playing baseball. Are you playing baseball? I’m not playing baseball.
Nancy is writing a letter. Is Nancy writing a letter? Nancy isn’t writing a letter.
They’re listening to the pop music. Are they listening the pop music? They aren’t listening to the pop music.