Wenn es regnet, bleibe ich zu Hause.
English: If it rains, I stay at home.
In German, 'Nebensätze mit wenn' are subordinate clauses that use 'wenn' to talk about conditions or repeated events. 'Wenn' means 'if' or 'when' in this context.
Use 'wenn' in German to talk about things that happen regularly or under certain conditions, such as routines or possible situations.
Wenn es regnet, bleibe ich zu Hause.
English: If it rains, I stay at home.
Ich rufe dich an, wenn ich Zeit habe.
English: I call you when I have time.
Wenn du willst, gehen wir ins Kino.
English: If you want, we go to the cinema.
Wenn ich Hunger habe, esse ich ein Sandwich.
English: When I am hungry, I eat a sandwich.