Khán giả vỗ tay.

Khán giả means audience, spectators, or audience member(s) depending on context.

In Khán giả vỗ tay, it usually means the audience as a group.

Vietnamese nouns usually do not change form for singular vs. plural, so khán giả can be:

• an audience member in some contexts
• the audience / spectators in other contexts

If you want to make it clearly singular, you could say:

• một khán giả = one audience member

If you want to emphasize plural, you could say:

• các khán giả
• những khán giả

But in this sentence, plain khán giả sounds natural.

Vietnamese does not have articles like a, an, and the in the same way English does.

So Khán giả vỗ tay can mean:

• The audience applauds
• The audience is clapping
• Audience members clap

Which English version fits best depends on context.

Vietnamese often leaves definiteness unstated unless it needs to be made clearer.

Because vỗ tay is already a verb phrase: to clap / applaud.

In English, we often say:

• The audience is clapping

But in Vietnamese, you can often just say:

• Khán giả vỗ tay

No extra verb like is/are is needed.

If you want to stress that the action is happening right now, you can add đang:

• Khán giả đang vỗ tay = The audience is clapping

Literally:

• vỗ = to pat, slap, or clap
• tay = hand

Together, vỗ tay is a fixed expression meaning:

• to clap
• to applaud

So even though the parts are understandable separately, you should learn vỗ tay as a common set phrase.

Vietnamese often uses the basic noun form without marking singular or plural.

So tay can mean:

• hand
• hands

depending on the expression and context.

In vỗ tay, Vietnamese does not need to say hands explicitly in the English way. The phrase simply means to clap.

This is very common in Vietnamese: body-part words often stay in their basic form even when English would use a plural.

A rough guide:

• Khán: something like khahn with a rising tone
• giả: roughly zaa in Northern Vietnamese, often closer to yaa/zaa depending on dialect, with a dipping-rising tone
• vỗ: roughly voh with a broken rising tone
• tay: like tie or tai without a tone mark

A few useful pronunciation notes:

• kh is not exactly English k; it has a breathy sound, a bit like the ch in German Bach
• gi is pronounced differently by dialect
• Tone marks matter a lot, because changing the tone can change the word

So it is best to listen to native audio if possible, especially for giả and vỗ.

The word order is:

Subject + Verb

• Khán giả = subject
• vỗ tay = verb phrase

So Vietnamese is behaving very much like English here:

• The audience applauds
• Khán giả vỗ tay

This is a very common and straightforward Vietnamese sentence pattern.

Yes. That is very natural.

• Khán giả vỗ tay = neutral statement; it can mean the audience claps / applauds
• Khán giả đang vỗ tay = specifically the audience is clapping right now

The word đang marks an ongoing action.

So if you are describing something in progress, đang is a good choice.

Yes.

You can say:

• Khán giả vỗ tay cho ca sĩ. = The audience applauds the singer.
• Mọi người vỗ tay cho cô ấy. = Everyone claps for her.

Here, cho means for.

Without anything after it, vỗ tay just means clap/applaud in general.

Yes, depending on the situation.

Some common alternatives are:

• Khán giả đang vỗ tay. = The audience is clapping.
• Mọi người vỗ tay. = People are clapping / Everyone claps.
• Cả khán phòng vỗ tay. = The whole hall/room applauds.

But Khán giả vỗ tay is already a perfectly natural, simple sentence.