Sau khi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn.

Sau khi means after and introduces a time clause.

So Sau khi ra khỏi văn phòng means After leaving the office or more literally After exiting the office.

A very common pattern is:

sau khi + verb phrase, main clause

Example:

• Sau khi ăn, tôi đi ngủ. = After eating, I go to sleep.

In Vietnamese, the subject is often omitted when it is obvious from context.

In Sau khi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn, the person leaving the office is understood to be tôi because the main clause says tôi sẽ gọi điện cho bạn.

So even though Vietnamese does not repeat tôi, the meaning is still:

• After I leave the office, I will call you.

If needed, Vietnamese could say:

• Sau khi tôi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn.

But this sounds less natural unless you want to emphasize the subject.

Ra khỏi is a very common combination meaning to go out of, to get out of, or to leave a place.

• ra = out
• khỏi = away from / out of

Together, they express movement from inside to outside or away from a place.

So:

• ra khỏi văn phòng = leave the office / go out of the office

Vietnamese often uses directional elements like this to show motion very clearly.

Yes. Rời văn phòng also means leave the office.

The difference is mainly in style and nuance:

• ra khỏi văn phòng feels very physical and directional: going out from inside the office
• rời văn phòng means leaving/departing, and is a bit more neutral or formal

In everyday speech, ra khỏi văn phòng sounds very natural.

Yes. Văn phòng means office.

It usually refers to an office workplace or office room. In this sentence:

• ra khỏi văn phòng = leave the office

A learner should also know that Vietnamese sometimes uses other words depending on context, but văn phòng is the normal direct translation here.

Sẽ is a future marker. It often means will.

So:

• tôi sẽ gọi điện cho bạn = I will call you

It shows that the action happens after the moment of speaking, or after another event in the sentence.

Vietnamese does not always need sẽ to talk about the future if the time is already clear from context, but using sẽ is very common and natural here.

Yes, sometimes.

You could hear:

• Sau khi ra khỏi văn phòng, tôi gọi điện cho bạn.

But without sẽ, this can sound less clearly future on its own, unless the context already makes the timing obvious.

Because the sentence talks about something that will happen later, sẽ helps make that future meaning explicit. For learners, keeping sẽ here is a good choice.

Both are possible, but they are slightly different in style and clarity.

• gọi điện cho bạn = call you on the phone
• gọi bạn can mean call you, but depending on context it may sometimes be understood more generally

Because English call can mean different things, Vietnamese often uses gọi điện to make it clear that the action is a phone call.

So:

• gọi điện = make a phone call
• cho bạn = to you

Here cho marks the recipient of the action.

So:

• gọi điện cho bạn = call you / more literally make a phone call to you

This use of cho is very common:

• viết thư cho tôi = write a letter to me
• mua quà cho mẹ = buy a gift for mother

It often works like to or for, depending on the verb.

In this sentence, bạn is being used as you, not necessarily friend.

Vietnamese pronouns depend a lot on relationship, age, and social context. Bạn is a very common neutral way to say you, especially:

• between friends
• between people of similar age
• in textbook examples
• in fairly neutral conversation

So here, cho bạn simply means to you.

Yes, a little.

Vietnamese puts the after-clause first:

• Sau khi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn.
• literally: After leaving the office, I will call you.

This is also possible in English, so it may not feel very strange. But in Vietnamese, this kind of time phrase at the beginning is very common.

The structure is:

[time clause], [main clause]

Yes, absolutely.

This is also natural:

• Tôi sẽ gọi điện cho bạn sau khi ra khỏi văn phòng.

It means the same thing: I will call you after leaving the office.

The difference is mainly focus:

• Sau khi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn. emphasizes the time condition first
• Tôi sẽ gọi điện cho bạn sau khi ra khỏi văn phòng. starts with the main action first

Both are correct.

Yes. The comma separates the introductory time clause from the main clause:

• Sau khi ra khỏi văn phòng, = introductory time phrase
• tôi sẽ gọi điện cho bạn. = main clause

In writing, this comma helps readability. In speech, there is often a small pause there too.

It is very natural and correct.

It sounds like standard, neutral Vietnamese. A native speaker would understand it immediately.

In casual speech, someone might shorten it a little depending on context, but the full sentence:

• Sau khi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn.

is completely normal and idiomatic.

A casual spoken version might be:

• Ra khỏi văn phòng rồi tôi gọi cho bạn nhé.
• Ra khỏi văn phòng, tôi gọi bạn sau nhé.

These versions depend on tone and context, and some include particles like nhé to sound friendlier.

But for a clear standard sentence, Sau khi ra khỏi văn phòng, tôi sẽ gọi điện cho bạn is excellent.