Mechanik mówi, że silnik działa dobrze.

that

Breakdown of Mechanik mówi, że silnik działa dobrze.

• dobrze: well
• mówić: to say
• działać: to work

Questions & Answers about Mechanik mówi, że silnik działa dobrze.

Why is it mechanik and not some other form?

Mechanik is in the nominative case because it is the subject of the sentence — the person doing the action of speaking.

• mechanik = the mechanic
• In this sentence, the mechanic is the one who mówi (says / is saying)

So the basic structure is:

• Mechanik = subject
• mówi = verb
• że silnik działa dobrze = what he says

What does mówi mean exactly? Is it says or is speaking?

Mówi can mean says, is saying, or speaks, depending on context.

In this sentence, Mechanik mówi, że... is most naturally:

• The mechanic says that...

Why? Because it introduces reported speech: someone is stating something.

Compare:

• Mechanik mówi po polsku. = The mechanic speaks Polish.
• Mechanik mówi, że silnik działa dobrze. = The mechanic says that the engine is working well.

So here, mówi is best understood as says.

Why is there a comma before że?