Si fas trampes, acabem la partida.

Because fas is the 2nd person singular present form of fer (to do / to make).

• fer = infinitive = to do
• fas = you do

So Si fas trampes means If you cheat / If you do cheating.

This is a very common pattern in Catalan: after si (if), you use a normal finite verb form, not the infinitive.

In this sentence, fer trampes is the standard expression for to cheat.

Literally:

• fer = to do
• trampes = tricks / dishonest moves / cheats

So Catalan often expresses the idea as to do cheats rather than with one single everyday verb.

This is just the idiomatic way to say it:

• fas trampes = you cheat
• No facis trampes = Don’t cheat

Because the expression is idiomatically fer trampes, with trampes in the plural.

You normally say:

• fer trampes = to cheat

not usually:

• fer trampa

Even though English uses a singular-looking verb (cheat), Catalan uses this fixed plural noun expression.

Acabem is the 1st person plural present form of acabar:

• acabo = I end
• acabes = you end
• acaba = he/she/it ends
• acabem = we end
• acabeu = you all end
• acaben = they end

So acabem la partida means we end the game.

Why not acabarem? Catalan often uses the present tense in conditional sentences like this, especially for warnings, rules, or immediate consequences:

• Si fas trampes, acabem la partida.

This sounds like:

• If you cheat, we end the game.
• If you cheat, the game is over.

Using the present makes it sound direct and firm.

Because Catalan usually doesn’t need subject pronouns when the verb ending already shows who the subject is.

Here:

• fas already tells you the subject is tu (you singular)
• acabem already tells you the subject is nosaltres (we)

So Catalan normally says:

• Si fas trampes, acabem la partida.

not:

• Si tu fas trampes, nosaltres acabem la partida.

The pronouns can be added for emphasis, but they are usually omitted.

Because si is the normal word for if in real, possible conditions.

In Catalan, after si in this kind of sentence, you normally use the indicative, not the subjunctive:

• Si fas trampes... = If you cheat...

That is the standard pattern for ordinary conditions.

A learner may expect something more complicated because some languages use special moods after if, but here Catalan keeps it straightforward.

Grammatically, both verbs are in the present tense, but the sentence usually refers to a future consequence.

So:

• Si fas trampes, acabem la partida.

means something like:

• If you cheat, we’ll end the game.

This is very common in Catalan. Present forms are often used for:

• rules
• warnings
• immediate consequences
• instructions

So the idea is future, but the form is present.

Catalan often uses the definite article where English might not emphasize it as much.

• la partida = the game / the match / the round

Here it refers to the specific game you are currently playing, so la is natural.

Without the article, it would sound less normal in this context.

Not exactly.

• joc = game in a general sense, or the game as a type/activity
• partida = a specific game / match / round / playthrough

In this sentence, la partida means the specific session or round being played.

So if people are in the middle of playing cards, chess, or another game, partida is often the right word.

Not as written.

• acabem la partida clearly means we end the game because acabem is we end
• If you wanted the game ends / is over, you would need a different structure, for example something like:
  • s’acaba la partida

So the original sentence specifically presents we as the people taking action.

It is very natural and standard to write a comma after the si clause:

• Si fas trampes, acabem la partida.

The comma helps separate:

1. the condition: Si fas trampes
2. the result: acabem la partida

In short sentences, punctuation can vary a little in informal writing, but the comma is the normal choice here.

Usually, no. The normal idiomatic expression is fer trampes.

So the natural sentence is:

• Si fas trampes, acabem la partida.

A learner should treat fer trampes as a fixed expression, much like learning a phrasal expression in English.

It sounds like a firm rule or warning.

• Si fas trampes, acabem la partida.

This is not just a neutral statement. It sounds like:

• If you cheat, we’re ending the game.

Because it uses the present tense, it can feel immediate, direct, and non-negotiable. That makes it very natural in arguments, rules, or spoken conversation during a game.