Jej brązowy płaszcz jest już suchy, ale moje czarne buty nadal są mokre.

Jej is the normal possessive word meaning her.

A very important point: possessive jej does not change for gender, number, or case of the noun that follows it. So you get:

• jej płaszcz = her coat
• jej sukienka = her dress
• jej buty = her shoes

This is different from mój / moja / moje, which do change.

So jej brązowy płaszcz is completely normal.

Because buty is plural, and Polish adjectives and some possessives must agree with the noun.

Also, Polish has two main plural agreement types:

• masculine personal: groups of male people
• non-masculine-personal: everything else

Buty are things, not male people, so they take the non-masculine-personal plural forms:

• moje
• czarne
• mokre

Compare:

• moi nowi koledzy = my new male friends
• moje nowe buty = my new shoes

Because Polish adjectives must agree with the noun in gender, number, and usually case.

In this sentence:

• płaszcz is masculine singular
• buty is plural non-masculine-personal

So the adjective forms change accordingly:

• brązowy płaszcz
• płaszcz jest suchy

but

• czarne buty
• buty są mokre

English adjectives stay the same, but Polish adjectives change shape.

Because jest means is for a singular subject, and są means are for a plural subject.

• płaszcz jest = the coat is
• buty są = the shoes are

So the verb być changes to match the subject.

When Polish uses an adjective after być to describe the subject, that adjective normally stays in the nominative:

• Płaszcz jest suchy
• Buty są mokre

That is why you do not use instrumental forms here.

A useful rule of thumb:

• predicate adjective after być → usually nominative
• predicate noun after być → often instrumental, especially with roles or professions

For example:

• On jest zmęczony = He is tired
• On jest nauczycielem = He is a teacher

• już = already
• nadal = still

So:

• jest już suchy means the coat has become dry by now
• nadal są mokre means the shoes remain wet

These two words often show a contrast nicely:

• już = a change has happened
• nadal = the situation continues

Yes. Polish word order is more flexible than English word order.

The version you have is very natural and neutral:

• Jej brązowy płaszcz jest już suchy, ale moje czarne buty nadal są mokre.

But you may also hear:

• Jej brązowy płaszcz już jest suchy
• Moje czarne buty są nadal mokre

These alternatives are possible, but they may shift emphasis slightly. The original sentence is a very good standard pattern to learn.

That is the most neutral, everyday order:

• possessive + adjective + noun

So:

• jej brązowy płaszcz
• moje czarne buty

Polish can move words around for emphasis, but this order is the safest and most natural one for learners.

Because in Polish, a comma is normally written before ale when it joins two clauses.

So this punctuation is standard:

• ..., ale ...

The sentence has two parts:

• Jej brązowy płaszcz jest już suchy
• ale moje czarne buty nadal są mokre

That is why the comma appears there.

Buty is the plural form meaning shoes.
The singular is but, meaning shoe.

So:

• but = one shoe
• buty = shoes

Just like in English, when talking about a pair in general, Polish normally uses the plural:

• Buty są mokre = The shoes are wet

If you meant only one shoe, you would say:

• But jest mokry

A rough learner-friendly guide:

• jej ≈ yey
• brązowy ≈ bron-ZO-vih
• płaszcz ≈ pwashch
• suchy ≈ SOO-khih
• mokre ≈ MO-kreh

A few useful sound notes:

• ł sounds like English w
• ą is a nasal vowel, often sounding roughly like on / om
• cz sounds roughly like ch
• szcz sounds like a blended shch
• ch is a harsher sound than normal English h

So płaszcz starts with something like pwash-, not with a clear English l sound.

Yes. In many sentences, nadal and wciąż both mean still and are interchangeable.

So you could say:

• moje czarne buty nadal są mokre
• moje czarne buty wciąż są mokre

Both are natural.
Nadal can sometimes sound a little more neutral or matter-of-fact, but in everyday use the difference is often small.