「（正）在」（进行） "(zhèng)zài"
「（正）在」（进行）（"(zhèng)zài"）means “(正)在 + verb: an action in progress ('be …-ing')”. Put 在 (or 正在) before the verb to show the action is ongoing right now. Formation: （正）在 + 动词（正在做…）
(正)在 + verb: an action in progress ('be …-ing')
HSK1Formation
（正）在 + 动词（正在做…）
Explanation
Put 在 (or 正在) before the verb to show the action is ongoing right now. 呢 is often added at the end for tone. Note: this 在 is an adverb of progress, different from the location preposition 在 + place.
Examples
Note
Often ends with 呢: 他在打电话呢.
FAQ
「（正）在」（进行） — what does it mean and how is it used?
(正)在 + verb: an action in progress ('be …-ing'). Put 在 (or 正在) before the verb to show the action is ongoing right now. 呢 is often added at the end for tone. Note: this 在 is an adverb of progress, different from the location preposition 在 + place.
「（正）在」（进行） — how do you form it?
（正）在 + 动词（正在做…）
「（正）在」（进行） — any usage notes?
Often ends with 呢: 他在打电话呢.