Suo molt.

Because Catalan often omits subject pronouns when the verb form already makes the subject clear.

Here, suo already means I sweat / I am sweating, so jo is not necessary.

You can add jo if you want emphasis or contrast:

Jo suo molt, però ell no.
= I sweat a lot, but he doesn’t.

Without jo, Suo molt is the most neutral, natural version.

Suo is the 1st person singular present indicative of the verb suar.

So:

• suar = the infinitive
• suo = I sweat / I am sweating

It is the form used with jo, even if jo is left out.

Yes, it is mostly a regular -ar verb.

The main thing learners notice is that some forms have two vowels together, like suo. That may look unusual at first, but it is normal.

A few present-tense forms are:

• suo = I sweat
• sues = you sweat
• sua = he/she/it sweats
• suem = we sweat
• sueu = you all sweat
• suen = they sweat

So the verb is not highly irregular; it just has a vowel pattern you need to get used to.

Here, molt means a lot or very much because it is modifying a verb.

So:

• Suo molt = I sweat a lot

This is different from molt before an adjective or adverb, where it usually means very:

• molt cansat = very tired
• molt ràpid = very fast

A useful rule is:

• after a verb: molt = a lot / very much
• before an adjective/adverb: molt = very

Because molt de is used before nouns, not after verbs.

Compare:

• Suo molt = I sweat a lot
• Beu molta aigua = He/She drinks a lot of water

So:

• molt alone can modify a verb
• molt / molta / molts / moltes + noun is used with nouns

That is why Suo molt is correct, not Suo molt de.

Yes. In Catalan, the present tense can often cover both a general/habitual meaning and a right-now meaning, depending on context.

So Suo molt can mean:

• I sweat a lot.
• I’m sweating a lot.

If you want to make the ongoing action especially clear, Catalan can also use:

• Estic suant. = I’m sweating.
• Estic suant molt. = I’m sweating a lot.

But Suo molt is still perfectly natural.

Yes. Jo suo molt is grammatically correct.

The difference is mainly emphasis:

• Suo molt = neutral, everyday
• Jo suo molt = more emphatic, contrastive, or explicit

For example:

• Jo suo molt; ella, no gaire.
  = I sweat a lot; she, not much.

If there is no special emphasis, learners should usually prefer the version without the pronoun.

Suo molt is the normal, natural word order.

In Catalan, molt usually comes after the verb when it modifies that verb:

• Parlo molt = I talk a lot
• Menja molt = He/She eats a lot
• Suo molt = I sweat a lot

If you move molt, the sentence may sound marked, poetic, or strongly emphatic rather than neutral.

So for everyday speech, Suo molt is the best pattern to learn.

A helpful pronunciation guide is:

• suo: two syllables, roughly SU-o
• molt: roughly molt, with the exact final t depending on accent

A few important points:

• suo is usually pronounced with the vowels separately, not like one English-style glide.
• The stress in suo falls on the first syllable: SU-o
• In molt, pronunciation varies somewhat by dialect; in many accents the final t is weak or not fully pronounced, while in others it is clearer.

So a simple learner-friendly approximation is:

SU-o molt

Because it follows the normal Catalan stress rules, so no written accent is needed.

Since suo ends in a vowel, the default stress is on the penultimate syllable. Because suo has two syllables, that means the stress naturally falls on su-:

• SU-o

If a word follows the regular stress pattern, Catalan usually does not write an accent mark.