Dacă schimb planul, o să te sun imediat.

In this sentence, dacă means if and introduces a condition:

• Dacă schimb planul = If I change the plan

Yes, dacă is very commonly used to introduce conditional clauses in Romanian, much like if in English.

Romanian often leaves out subject pronouns because the verb ending already shows who is doing the action.

• schimb = I change
• schimbi = you change
• schimbă = he/she changes

So Dacă schimb planul naturally means If I change the plan, even though eu (I) is not stated.

You can say Dacă eu schimb planul, but it usually adds emphasis, similar to If I change the plan.

Schimb is the 1st person singular present tense of the verb a schimba, meaning to change.

So:

• a schimba = to change
• schimb = I change
• schimbi = you change
• schimbă = he/she changes

In this sentence, Romanian uses the present tense after dacă, even though English often also uses the present in this kind of conditional: If I change the plan...

Planul means the plan.

Romanian usually adds the definite article to the end of the noun instead of putting a separate word before it.

• plan = plan
• planul = the plan

So:

• schimb planul = I change the plan

This is one of the most important features of Romanian grammar.

O să is a very common way to form the future in Romanian. Here it means will / am going to.

So:

• o să te sun = I will call you

This structure is very common in spoken and everyday Romanian.

In this sentence:

• Dacă schimb planul, o să te sun imediat.
• If I change the plan, I’ll call you immediately.

Because te is an unstressed object pronoun, and in Romanian these pronouns usually come before the verb.

• te = you (direct object, singular/informal)
• sun = I call

So:

• te sun = I call you

And with the future marker:

• o să te sun = I will call you

Putting te after the verb would sound wrong in standard Romanian.

Here te means you and functions as the direct object.

• a suna pe cineva = to call someone
• te sun = I call you

So in this sentence, te is the person being called.

It is singular and informal. If you wanted a formal version, Romanian would usually use a different structure, such as vă sun for I call you when speaking politely or to more than one person.

Yes. Sun is the 1st person singular present tense of a suna, which means to call or to ring.

• a suna = to call / to ring
• sun = I call
• suni = you call
• sună = he/she calls

So:

• te sun = I call you
• o să te sun = I will call you

Even though o să gives the sentence future meaning, the main verb itself stays in its base present-form pattern here.

Romanian normally uses the present tense after dacă when talking about a real future condition.

So Romanian says:

• Dacă schimb planul, o să te sun.
• literally: If I change the plan, I will call you.

This is similar to English, which also says If I change the plan, not If I will change the plan.

So the pattern is very natural:

• dacă + present, then
• future in the main clause

Yes. Te voi suna also means I will call you.

Two common future forms are:

• o să te sun — very common, natural, conversational
• te voi suna — also correct, sometimes a bit more formal or neutral in style

So you could say:

• Dacă schimb planul, o să te sun imediat.
• Dacă schimb planul, te voi suna imediat.

Both are correct.

Imediat means immediately / right away.

In this sentence it comes at the end:

• o să te sun imediat = I’ll call you immediately

That position is very natural in Romanian. Romanian word order is somewhat flexible, but this version is simple and standard.

You may also hear variations depending on emphasis, but o să te sun imediat is the most straightforward wording.

Yes. The comma separates the conditional clause from the main clause:

• Dacă schimb planul, = If I change the plan,
• o să te sun imediat. = I’ll call you immediately.

This punctuation is standard in Romanian when the sentence begins with the dacă clause.

The main change would be the pronoun for you.

Informal singular:

• Dacă schimb planul, o să te sun imediat.

Formal or plural:

• Dacă schimb planul, o să vă sun imediat.

So:

• te = you (singular, informal)
• vă = you (plural or formal singular)

Everything else can stay the same.

A rough pronunciation guide is:

Duh-KUH skimb PLA-nul, o suh te soon ee-meh-dee-AT.

A few useful points:

• Dacă: the ă is a central vowel, something like a relaxed uh
• schimb: the sch sounds like shk
• planul: stress is on pla
• sun: sounds like soon, but shorter
• imediat: stress is on the last syllable, -at

If you want to sound natural, keep the rhythm smooth: Dacă schimb planul, o să te sun imediat.