II. Present continuous tense

1 表示说话时正在进行的动作。

-what are you doing?

-I am writing a letter.

It's raining heavily now, so we must stay inside.

2 表示现阶段一直在进行的动作。

Jane is studying law while her sister is doing physics. 简在学习法律而她的姐姐在学习物理。

He is teaching English and learning Chinese. 他正在一边教英语一边学中文。

3 表示按计划近期内即将发生的动作。

I am meeting Mr. Wang tonight. 我今晚要去见王先生。

I am going to Qingdao for the summer holiday this year. 我计划今年去青岛过暑假。

The plane is leaving for London soon. 飞机即将飞往伦敦。

4 与always often 等频度副词连用表示经常反复的行为或某种感情色彩。

The girl is always talking loud in public. 那个女孩总爱当众大声喧哗。

She is often borrowing money and forgetting to pay me back. 她经常借钱却忘记还。

She is constantly complaining about her fate. 她不停地抱怨自己的命运不好。

Notes: 以下四类动词不宜用现在进行时。

A 表示心理状态、情感的动词

Like, love, hate, care, remember, believe, want, mind, wish, agree, mean, need

B 表示存在状态的动词

appear, exist, lie, remain, seem, belong to, depend on

C 表示瞬间动作的动词

allow, accept, permit, promise, admit, complete

D 表示感官的动词

see, hear, notice, feel, smell, sound, taste, look

III. The present perfect tense

1 表示反复发生的经历

He has hosted the show eight times. 他已经连续八次主持表演。

Billy Crystal has been in many films and television shows.

贝利克克里斯托已经出演过多部电影和电视剧。