Be doing with 在 / 正在

Structure (正)在 + Verb (+ 呢)

To say an action is IN PROGRESS you put 在 (or 正在, more emphatic) BEFORE the verb: 我在吃饭 = "I’m eating". It is often closed with 呢. Don’t confuse it with the 在 of location (我在家): here 在 comes before a VERB, not a place. Negate with 没(有): 我没在睡觉.

Examples

我wǒ在zài吃chī饭fàn。
I’m eating.
他tā正zhèng在zài打dǎ电diàn话huà。
He’s on the phone.
孩hái子zi们men在zài睡shuì觉jiào呢ne。
The kids are sleeping.

Levels are indicative: they follow the standard Chinese Grammar Wiki (AllSet Learning) progression, not an official HSK 3.0 mapping. We never assign levels by eye.

This point and the other 370, with audio on every example, inside Wanyu.