Why do I need to know c'est moi? As one of the many ways to respond to "thank you", it's hard to avoid this expression and while you might catch on to its general meaning, you might not really know ...

Why do I need to know c’est ça? C’est ça (pronounced ‘say sah’) is one of those phrases you hear all the time without even realizing it - probably because it’s useful in lots of different situations.