Ta deska jest mała, więc kiełbasa prawie spada na podłogę.

Because deska is a feminine singular noun in Polish, and the demonstrative this has to agree with it:

• ten = masculine
• ta = feminine
• to = neuter

So:

• ta deska = this board
• compare: ten stół = this table
• compare: to okno = this window

Agreement in gender is very important in Polish.

Adjectives also have to agree with the noun they describe.

Since deska is feminine singular, the adjective must also be feminine singular:

• masculine: mały
• feminine: mała
• neuter: małe

So:

• mała deska = a small board
• mały stół = a small table
• małe okno = a small window

In the sentence, deska jest mała literally means the board is small.

Jest means is.

In the present tense, Polish usually does use jest with predicate adjectives:

• Deska jest mała. = The board is small.

You generally cannot omit it in a normal sentence like this.

Polish sometimes omits forms of to be in other contexts, especially in informal styles, headlines, or with certain structures, but here jest is the normal and correct choice.

Więc means so, therefore, or thus.

It connects the first idea to the result:

• Ta deska jest mała = this board is small
• więc = so / therefore
• kiełbasa prawie spada na podłogę = the sausage almost falls onto the floor

A comma is normally used before więc, just like English often uses a comma before so when connecting clauses.

So the punctuation here is standard.

Because kiełbasa is the thing that is almost falling.

In Polish, the subject is usually in the nominative case, and kiełbasa here is nominative singular.

So the structure is:

• kiełbasa = subject
• spada = falls / is falling

Even though English learners may focus on the board first, the second clause is really about what happens to the sausage.

This is a question of aspect and tense.

• spada is imperfective, present tense: falls / is falling
• spadnie is perfective, future tense: will fall

With prawie (almost), Polish often uses the imperfective present to describe something that is on the verge of happening:

• prawie spada = is almost falling / almost falls
• very natural in context

If you said prawie spadnie, that would suggest something more like it will almost fall, which is less natural here.

So prawie spada fits the immediate visual situation better.

Because Polish distinguishes between:

• movement toward a place → na + accusative
• location at a place → na + locative

Here the sausage is moving onto the floor, so Polish uses na podłogę:

• na podłogę = onto the floor

Compare:

• Kiełbasa spada na podłogę. = The sausage falls onto the floor.
• Kiełbasa leży na podłodze. = The sausage is lying on the floor.

So:

• podłogę = accusative
• podłodze = locative

Because after na meaning onto, the noun goes into the accusative case.

The base form is:

• podłoga = floor

The accusative singular form is:

• podłogę

This is a common pattern for many feminine nouns ending in -a:

• nominative: książka

• accusative: książkę

• nominative: deska

• accusative: deskę

• nominative: podłoga
• accusative: podłogę

So na podłogę is exactly what we expect grammatically.

Prawie means almost.

In this sentence it modifies the verb phrase:

• prawie spada = almost falls / is almost falling

In Polish, prawie usually goes directly before the word or phrase it modifies:

• prawie spada = almost falls
• prawie na podłogę would suggest something different, like almost onto the floor

So its position matters. Here, placing it before spada is the natural choice.

Yes, it is very normal.

The basic order is:

• Ta deska = subject
• jest mała = predicate
• więc = connector
• kiełbasa = subject
• prawie spada = verb phrase
• na podłogę = direction/place phrase

Polish word order is more flexible than English because cases show grammatical relationships, but the version here is neutral and clear.

You could move things around for emphasis, for example:

• Ta deska jest mała, więc prawie kiełbasa spada na podłogę.

But that sounds marked or awkward in most contexts. The original sentence is the best neutral version.

Polish does not have articles like English a/an and the.

So a noun like deska can mean:

• a board
• the board

The exact meaning depends on context.

Here, ta deska makes it definite because ta means this. But kiełbasa has no article, so depending on context it can mean:

• the sausage
• a sausage

That is completely normal in Polish.

Deska is a broad word meaning board or plank, and in context it can also refer to things like a cutting board.

So the exact image depends on the situation.

For example:

• deska do krojenia = cutting board
• drewniana deska = wooden board/plank

In your sentence, many learners would probably imagine a cutting board because of kiełbasa, but grammatically deska itself does not force that interpretation.

Yes, if you want to make that explicit, Polish could say:

• Ta deska jest mała, więc kiełbasa prawie spada z deski na podłogę.

Here:

• z deski = from the board
• na podłogę = onto the floor

But the original sentence is still fine, because the source is easy to infer from context. Polish often leaves out information that is obvious.