Ana presupune că el vine.

Că means that and introduces a subordinate clause.

So the structure is:

• Ana presupune = Ana assumes/supposes
• că el vine = that he is coming / that he comes

In Romanian, că is very common after verbs like:

• a crede = to believe
• a spune = to say
• a ști = to know
• a presupune = to assume

English often drops that, but Romanian often keeps că.

Yes, Romanian often leaves subject pronouns out because the verb ending usually shows the person.

So both of these are possible:

• Ana presupune că el vine.
• Ana presupune că vine.

Including el can add:

• emphasis
• contrast
• clarity

For example, el may be used if you want to stress that he is the one coming, not someone else.

Vine is the conjugated present-tense form of the verb a veni (to come).

• dictionary form: a veni
• el/ea vine = he/she comes, is coming

Romanian uses the conjugated form, just like English uses comes/is coming, not to come.

A few present-tense forms of a veni are:

• eu vin = I come / I am coming
• tu vii = you come / you are coming
• el/ea vine = he/she comes / is coming
• noi venim = we come / we are coming
• voi veniți = you come / you are coming
• ei/ele vin = they come / they are coming

Presupune is the 3rd person singular present of a presupune.

That means it matches Ana:

• Ana presupune = Ana assumes

The same form is also used with el/ea:

• el presupune
• ea presupune

So the verb agrees with the subject Ana, which is singular.

Often yes, but not always perfectly.

A presupune can mean:

• to assume
• to suppose
• sometimes to imply / presuppose, depending on context

In this sentence, it most naturally means assumes or supposes.

So:

• Ana presupune că el vine = Ana assumes/supposes that he is coming

As in English, the exact nuance depends on context.

Yes. Romanian present tense often covers both:

• simple present: comes
• present continuous: is coming

So el vine can mean either:

• he comes
• he is coming

The context tells you which is more natural.

In this sentence, English would often translate it as he is coming, but the Romanian form is simply present tense.

No. After că, Romanian usually uses the indicative, not the subjunctive.

That is why we get:

• că el vine

not a subjunctive construction.

A Romanian learner often needs to distinguish:

• că
  • indicative
• să
  • subjunctive

For example:

• Ana presupune că el vine. = Ana assumes that he is coming.
• Ana vrea să vină. = Ana wants him to come / wants to come.

So here, că introduces a factual or assumed statement, and vine is indicative present.

Yes, a little.

The most neutral order is:

• Ana presupune că el vine.

But Romanian can also say:

• Ana presupune că vine.
• Că el vine, Ana presupune. — possible, but much less neutral and more stylistic

Romanian word order is somewhat flexible, but the original sentence is the most standard and natural for everyday use.

Normally, no.

In standard Romanian, you usually do not put a comma before că when it introduces a subordinate clause like this.

So the correct punctuation is:

• Ana presupune că el vine.

not normally:

• Ana presupune, că el vine.

This is different from some punctuation habits learners may have from other languages.

Că is pronounced roughly like kuh with a very short, neutral vowel.

The letter ă represents the schwa sound /ə/, similar to the sound in the first syllable of English about.

So:

• că ≈ /kə/

This vowel is very common in Romanian, so it is worth getting used to early.

Because Ana is a proper name.

Proper names in Romanian normally do not take an article in sentences like this:

• Ana vine.
• Ana presupune că el vine.

So Ana works like John, Maria, or Daniel in English.

Normally, no, not in standard Romanian with this structure.

English can often say:

• Ana assumes he is coming

without that.

Romanian usually keeps că in this type of sentence:

• Ana presupune că el vine.

Leaving it out would sound unnatural or incorrect in standard usage.

Yes, but it is a bit more formal or careful than some very basic verbs.

In everyday speech, Romanians may also use verbs like:

• a crede = to believe / think
• a bănui = to suspect
• a presupune = to assume / suppose

So a presupune is common and correct, but depending on context, a speaker might choose a simpler or slightly different verb.