Chúng tôi có phòng chung.

Yes. Chúng tôi means we, but specifically we excluding the listener.

So if I say Chúng tôi có phòng chung, I mean my group and I have a shared room, but I am not including the person I am talking to.

A very important contrast is:

• chúng tôi = we, not including you
• chúng ta = we, including you

This is a common distinction in Vietnamese, and English speakers often need time to get used to it because English we does not normally show that difference.

Here, có means have.

The basic pattern is:

subject + có + noun

So:

• Chúng tôi = we
• có = have
• phòng chung = shared room / common room

So the sentence structure is very straightforward: We have a shared room.

In other contexts, có can also mean something like there is / there are, so it is a very common and flexible word in Vietnamese.

Vietnamese usually does not use articles the way English does.

So a noun like phòng can mean:

• a room
• the room
• just room

The exact meaning depends on context.

That is why phòng chung can be understood naturally without an article. English requires you to choose something like a shared room or the shared room, but Vietnamese often leaves that unspecified unless it needs to be made clear.

In Vietnamese, possession is often shown simply by using the subject together with có.

So:

Chúng tôi có phòng chung
literally follows the pattern We have shared room

That already tells you that the room belongs to or is available to us.

If you wanted to state possession more explicitly, you could say something like:

• phòng của chúng tôi = our room

But in this sentence, có already makes the idea of possession clear enough.

Phòng means room.
Chung means shared, common, or for joint use.

So phòng chung can mean:

• shared room
• common room

The best English translation depends on context.

For example:

• in a dorm or hotel context, it may mean a shared room
• in a building or house context, it may mean a common room

So the phrase is a little flexible.

Because in Vietnamese, descriptive words often come after the noun.

So:

• phòng chung = shared/common room
• literally: room shared/common

This is a very common word order difference from English.

English usually does:

• adjective + noun
  shared room

Vietnamese often does:

• noun + descriptive word
  phòng chung

That noun-before-modifier pattern is something English speakers see again and again in Vietnamese.

Usually, no.

The most common Vietnamese word for living room is:

• phòng khách

By contrast, phòng chung usually means a room used in common or shared by multiple people.

So if you translate phòng chung as living room, that would usually be inaccurate unless the context strongly supports that interpretation.

It depends on what you want to emphasize.

Both are possible:

• Chúng tôi có phòng chung
• Chúng tôi có một phòng chung

Adding một makes it more explicitly one / a shared room.

Without một, the sentence is still natural and grammatical. Vietnamese often leaves this kind of detail unstated when it is not important.

So:

• có phòng chung = have a shared room / have shared-room accommodation
• có một phòng chung = have one shared room

The version without một can sound a bit more general or less focused on the exact number.

Yes, it is natural, but the exact situation matters.

It sounds fine if you mean something like:

• We have a shared room
• We have a common room

However, in real conversation, Vietnamese speakers might choose slightly different wording depending on the context.

For example:

• Chúng tôi có một phòng chung. = We have a shared room.
• Chúng tôi ở phòng chung. = We stay in a shared room.
• Bọn tôi có phòng chung. = We have a shared room.
  This is a bit more casual than chúng tôi.

So the sentence is correct and natural, but it is not the only way to express the idea.

A rough pronunciation guide for English speakers is:

• chúng tôi ≈ choong toy
• có ≈ koh with a rising tone
• phòng ≈ fawng with a low-falling tone
• chung ≈ choong

A rough full approximation is:

choong toy koh fawng choong

A few important notes:

• ph in Vietnamese is pronounced like English f
• ch is somewhat like English ch, but lighter
• tones matter a lot in Vietnamese, so the real pronunciation is more than just the consonants and vowels

If you are learning pronunciation, it is best to listen to native audio, because tone and vowel quality are hard to capture well with English spelling.