Questions & Answers about Chcę wziąć udział w kursie.
Because Polish often leaves out subject pronouns when they are obvious from the verb form.
Chcę already means I want, so ja is not necessary.
You would add ja only for emphasis or contrast, for example:
- Ja chcę wziąć udział w kursie, a on nie.
I want to take part in the course, but he doesn’t.
So the sentence without ja is the normal, neutral version.
In Polish, the infinitive does not use a separate word like English to.
So:
- chcę wziąć = I want to take
- chcę iść = I want to go
- chcę czytać = I want to read
The infinitive itself is the basic dictionary form of the verb, and here that form is wziąć.
Wziąć udział is a fixed expression meaning to take part or to participate.
It is best learned as a whole chunk:
- wziąć udział w czymś = to take part in something
Literally, udział can mean share or part, but in this expression the whole phrase functions like one idea. So it is better not to translate it word by word every time.