What's up?
In Italian, 'Cosa succede?' is a casual phrase used to ask someone what is happening or how they are doing, similar to 'What's up?' in English. It's a common way to greet friends and can be used in both formal and informal situations.
Why do you look worried? What's happening?
This sentence can be used when you notice someone looking worried or upset and you are concerned about them. The phrase 'Cosa succede?' is used to ask 'What's happening?' It's a way to ask someone to share if there's something wrong or something going on that they're worried about.
What happens if I don't finish my homework?
This sentence can be used when you are discussing the consequences of not completing your homework. The phrase 'Cosa succede' is used to ask 'What happens'. So, in this context, it's asking about the result or consequence if a certain action is not completed.
I heard a strange noise. What's happening?
This sentence can be used when you hear a noise that you can't identify and it has made you concerned or curious. The phrase 'Cosa succede?' is used to ask 'What's happening?', implying that you want to find out the source or cause of the noise.