Після прогулянки я ставлю мокрі чоботи біля дверей, а сухі речі ховаю в шафу.

Because після always takes the genitive case.

• прогулянка = a walk
• Genitive singular: прогулянки

So:

• після прогулянки = after a walk / after the walk

This is a very common pattern in Ukrainian:

• після роботи = after work
• після уроку = after the lesson
• після дощу = after the rain

Ставлю is the 1st person singular present tense of ставити.

• ставити = to put, to place, to set
• я ставлю = I put / I am putting

In this sentence, it describes a habitual action or a routine, so in natural English it is often understood as:

• I put
• or I usually put

Ukrainian present tense often covers both simple present and present continuous, depending on context.

Ukrainian often uses ставити for things that are placed in an upright standing position.

So with boots, shoes, bottles, chairs, and similar objects, ставити is very natural.

Compare:

• ставити чоботи = to put/set boots down
• класти книжку = to lay/put a book down
• вішати куртку = to hang a jacket

So ставлю мокрі чоботи біля дверей sounds natural because boots are something you typically stand near the door.

Here мокрі чоботи is the direct object of ставлю, so it is in the accusative case.

However, because чоботи is an inanimate plural noun, its accusative plural looks the same as the nominative plural.

• Nominative plural: мокрі чоботи
• Accusative plural: мокрі чоботи

So the form does not change.

Also, the adjective agrees with the noun:

• мокрі = wet, plural
• чоботи = boots, plural

Because біля means near / by, and it requires the genitive case.

The noun двері is a special word in Ukrainian because it is usually treated as a plural-only noun.

So:

• base form: двері = door / doors
• genitive form after біля: дверей

That gives:

• біля дверей = by the door / near the door

Even though English usually says the door in the singular, Ukrainian commonly uses двері.

Because двері is one of those nouns that are normally used only in the plural form in Ukrainian.

This is similar to some English words that are grammatically plural even when they refer to one object, like:

• scissors
• pants
• glasses

So although двері often translates as singular door in English, in Ukrainian it behaves like a plural noun.

That affects agreement and case forms, for example:

• ці двері = this door / these doors
• біля дверей = by the door

А often links two parts of a sentence with a mild contrast or comparison.

Here the idea is:

• I put the wet boots by the door,
• while / but I put the dry things away in the wardrobe.

So а works very naturally because the sentence contrasts two different actions and two different kinds of items:

• мокрі чоботи → by the door
• сухі речі → into the wardrobe

If you used і, it would sound more like simple addition: and.
With а, the sentence feels more like: whereas / while / but as for.

Речі is the plural of річ, and it means things, items, or sometimes clothes/belongings, depending on context.

In this sentence, сухі речі most likely means:

• dry things
• dry items
• possibly dry clothes or belongings

So it is a broad, useful everyday word.

Examples:

• мої речі = my things
• теплі речі = warm clothes / warm things
• збирати речі = to pack one’s things

Yes. Сухі речі is also the direct object, this time of ховаю.

Again, because речі is an inanimate plural noun, the accusative plural looks the same as the nominative plural.

So:

• nominative plural: сухі речі
• accusative plural: сухі речі

The adjective and noun agree in number and case:

• сухі = dry, plural
• речі = things, plural

Literally, ховати can mean to hide. But in everyday Ukrainian it can also mean to put away, to store, or to tuck something away.

So in this sentence:

• сухі речі ховаю в шафу

means something like:

• I put the dry things away in the wardrobe
• I store the dry things in the wardrobe

It does not necessarily mean hiding them secretly. It is often just a normal household action.

Because в шафу shows direction/motion into the wardrobe, so Ukrainian uses в + accusative.

• в шафу = into the wardrobe

If you were talking about location, you would use в + locative:

• в шафі = in the wardrobe

So compare:

• Я ховаю речі в шафу. = I put the things into the wardrobe.
• Речі лежать в шафі. = The things are in the wardrobe.

This is a very important Ukrainian pattern:

• motion toward/into → accusative
• location inside/at → locative

Because the basic noun is шафа = wardrobe / cabinet.

After в meaning into, it goes into the accusative singular:

• nominative: шафа
• accusative: шафу

So:

• в шафу = into the wardrobe

This change is very common with feminine nouns ending in -а:

• книга → книгу
• сумка → сумку
• шафа → шафу

Most naturally, it describes a usual routine or a repeated action:

• After a walk, I put the wet boots by the door, and I put the dry things away in the wardrobe.

Ukrainian present tense can do both:

• something happening now
• something that usually happens

Here, because of після прогулянки and the practical household actions, it sounds very natural as a routine.

Yes. Ukrainian word order is fairly flexible, although the original version sounds natural and neutral.

Original:

• Після прогулянки я ставлю мокрі чоботи біля дверей, а сухі речі ховаю в шафу.

You could also say:

• Я після прогулянки ставлю мокрі чоботи біля дверей, а сухі речі ховаю в шафу.

The meaning stays basically the same, but the focus shifts a little. Putting Після прогулянки first emphasizes the time context: after the walk.

Because the sentence describes a process/habit/routine, not a single completed event.

• ставити = imperfective
• ховати = imperfective

Imperfective verbs are commonly used for:

• repeated actions
• habitual actions
• ongoing actions
• general descriptions

If you wanted to emphasize a single completed action in the future or past, Ukrainian might use perfective verbs instead, depending on context. But for a routine like this, imperfective is exactly what you expect.