If/whenever people eat too much, they feel uncomfortable. [general truth - type 0 conditional] If I spoke English fluently, I would quit my job and find a better one. [hypothetical present/future situation - type 2 conditional] If I don't pay my bills, I will get punished by the law. [real present/future situation - type 1 conditional] If you sit in the sun for too long, your skin will feel painful. [this is a type 1 conditional if it is said at the beach to a person]

If people eat too much, they will feel uncomfortable. If I spoke English fluently, I would quit my job and find a better one. If I don't pay my bills, I will get punished by the law. If you sit in the sun for too long, your skin will feel painful.

If people eat too much, they would feel uncomfortable. If I spoke English fluently, I would quit my job and find a better one. If I don't pay my bills,I would get punished by the law. If you sit in the sun for too long,you skin would feel painful.