Learn 常 / 常常 / 再 + 动词 and 在/正在 + 动词 + (宾语) through Hobbies and Habits.
Examples
打电话。
To make a phone call.
Examples
请关门。
Please close the door.
关灯。
Turn off the light.
Examples
这件衣服很好看。
This piece of clothing is very good-looking.
她长得很好看。
She is very good-looking.
Examples
跑得快。
To run fast.
跑步。
To jog.
S + 常 / 常常 / 再 + 动词常 and 常常 ("often") go before the verb for repeated actions; 再 ("again, next time") also goes before the verb. Never place them at the end of the sentence.
我常常打球。
I often play ball.
明天再来吧。
Come again tomorrow.
S + 在/正在 + 动词 + (宾语)Use 在 or 正在 before a verb to emphasize an action happening at the moment of speaking. It is often used to answer the question 'What are you doing?'
我在听歌。
I'm listening to songs.
他正在打球。
He is playing ball.
Two friends talk about their hobbies in sports and entertainment.
你常常做什么？
What do you usually do?
我常常跑，也常常打球。你呢？
I often run and I often play ball. And you?
我常常打球，也喜欢听歌。你现在在做什么？
I often play ball and I like listening to songs. What are you doing now?
我正在看电影。这个电影真好看！
I’m watching a film. This film is really good!
我也想看。外面有点儿冷，我关一下门。
I'd like to watch too. It's a bit cold outside — I'll close the door.
好，你关吧。我们一起看电影。
Sure, go ahead. Let's watch the film together.