tā zhèngzài kàn gēdān diǎngē.

正在 marks an action that is in progress right now. It works a lot like English is ...-ing.

So:

• 他正在看歌单点歌 = He is looking at the song list and choosing/requesting a song right now.

A few useful comparisons:

• 在 can also mark an ongoing action.
• 正在 often sounds a little more explicit or a little more focused on right now.

So 他在看歌单点歌 is also possible, but 正在 gives a stronger progressive feel.

This is a very common Chinese pattern. Chinese often puts verbs together in sequence when the relationship is clear from context.

Here, the idea is:

• 看歌单 = look at the song list
• 点歌 = choose/request a song

Together, it means something like:

• look at the song list and pick a song
• look through the song list in order to choose a song

English usually needs a connector like and, then, or to, but Chinese often does not.

It mainly goes with 看.

So the sentence is best understood as:

• 看歌单 = look at the song list
• 点歌 = choose/request a song

In other words, he is looking at the song list so that he can pick a song.

A learner might wrongly try to group it as 看 / 歌单点歌, but that is not the natural way to read it.

No. Here 点 does not mean physically point at.

In many everyday situations, 点 means to order, to select, or to request.

For example:

• 点菜 = order dishes
• 点咖啡 = order coffee
• 点歌 = request/select a song

So 点歌 is a set expression often used in places like karaoke, live music settings, or apps where you choose songs.

歌单 literally means song list.

Depending on context, it can mean:

• a playlist
• a song list
• a song catalog/menu, especially in karaoke

Because the sentence also has 点歌, the most natural meaning here is probably something like a song list for choosing songs from.

Mandarin does not use articles like English a, an, and the.

So 歌单 by itself can mean:

• a song list
• the song list

The listener figures it out from context.

This is very normal in Chinese. You do not need to add a separate word for the the way you do in English.

点歌 already works as a complete verb-object expression meaning choose/request a song.

So even without naming a specific song, it is fine.

If you want to be more specific, you can add details, for example:

• 他正在看歌单点这首歌。 = He is looking at the song list to choose this song.
• 他点了一首歌。 = He chose/requested a song.

But in the original sentence, the specific song is not important, so 点歌 by itself is enough.

Because the sentence describes an action that is still going on, not one that is completed.

• 正在 focuses on an ongoing action
• 了 often marks a completed action or a new situation

So:

• 他正在看歌单点歌 = He is in the middle of doing it
• 他点了歌 = He has already chosen/requested a song

Using 正在 without 了 is exactly what you would expect here.

Not necessarily, but that is a very natural context.

Because of 歌单 + 点歌, many people would imagine something like:

• karaoke
• a singing app
• a place where you can request songs

So the sentence does not absolutely have to be about karaoke, but it strongly suggests some setting where people choose songs from a list.

Yes, often you can.

Common options are:

• 他正在看歌单点歌
• 他在看歌单点歌
• 他正看歌单点歌 — less common in everyday speech, but possible in some styles

The most common everyday choices are 在 and 正在.

If you are unsure, 正在 is a safe and clear choice when you want to emphasize that the action is happening right now.