Afacerea merge bine.

Because -a at the end is the definite article attached to the noun.

• afacere = a business, business
• afacerea = the business

Romanian usually puts the definite article at the end of the noun instead of using a separate word like English the.

So:

• o afacere = a business
• afacerea = the business

Here, merge means goes in the sense of is going or is doing.

The verb is a merge, which literally often means to go or to walk, but in many everyday expressions it also means:

• to work
• to function
• to go well / badly
• to be going

So in Afacerea merge bine, merge is best understood as:

• is going
• is doing

That is why the whole sentence means something like The business is going well.

Because bine is an adverb, while bună is an adjective.

In this sentence, bine describes the verb merge:

• merge bine = goes well

You need an adverb because you are describing how the business is going.

Compare:

• o afacere bună = a good business
  
  • here bună describes the noun afacere
• afacerea merge bine = the business is going well
  
  • here bine describes the verb merge

This is similar to English good vs well.

Yes. It is the same verb: a merge.

Depending on context, it can mean different things, such as:

• to walk / go
• to function
• to suit / fit
• to go well

Examples:

• El merge pe jos. = He walks / goes on foot.
• Telefonul nu merge. = The phone doesn't work.
• Asta merge bine cu cafeaua. = That goes well with coffee.
• Afacerea merge bine. = The business is going well.

So this is a very common Romanian verb with several related meanings.

Merge is the 3rd person singular present tense of a merge.

That means it is the form used with subjects like:

• el = he
• ea = she
• afacerea = the business
• telefonul = the phone

So:

• afacerea merge = the business goes / is going

Romanian verbs change form depending on the subject, and merge matches a singular subject.

Because Romanian is not literally saying The business is well. It is saying The business goes well.

The main verb is merge, not a form of to be.

English often uses to be in translations, but Romanian uses a different structure here:

• Romanian: Afacerea merge bine.
• Literal idea: The business goes well.
• Natural English: The business is going well.

So nothing is missing; Romanian just expresses the idea differently.

Yes. Afacere can have a few related meanings depending on context, such as:

• business
• deal
• matter / affair in some contexts

But in Afacerea merge bine, the most natural meaning is clearly business.

So learners should know the core meaning is broad, but the context usually makes it clear.

The most natural neutral order is:

• Afacerea merge bine.

Romanian word order is somewhat flexible, but changing it can sound marked, poetic, or emphasize a different part of the sentence.

• Afacerea merge bine. = normal, neutral
• Merge bine afacerea. = unusual in ordinary speech unless you are emphasizing merge bine

So for a learner, the standard version to use is definitely:

• Afacerea merge bine.

A simple English-style approximation is:

ah-fah-CHEH-rya MER-jeh BEE-neh

A few notes:

• ce in Romanian sounds like che in check
• ge here sounds like je in gentle
• bine has two clear syllables: bi-ne

A more careful breakdown:

• Afacerea = a-fa-ce-rea
• merge = mer-ge
• bine = bi-ne

Yes, afacere is a feminine noun.

You can see this in forms like:

• o afacere = a business
• afacerea = the business

However, in the present tense, the verb merge does not change for gender. It only changes for person and number.

So whether the subject is masculine, feminine, or neuter, you still get:

• afacerea merge
• planul merge
• proiectul merge

Gender matters for articles and adjectives, but not here for the present-tense verb form.

Yes. That is a very natural variation.

• Afacerea merge bine. = The business is going well.
• Afacerea merge foarte bine. = The business is going very well.

You can also change the adverb:

• merge prost = is going badly
• merge excelent = is going excellently
• nu merge bine = is not going well

So this sentence pattern is very productive and useful.