Pronouns
Let's talk about Relative Pronouns!
Use où in phrases like I know where they are or the day when they arrived.
C'est l'année où tu t'es cassé la jambe
In English, we say the person who helps me and the person who (or whom) I help, but in French there are two words for who.
It's the same with ce qui and ce que!
Je sais ce qui est important.
J’ai lu ce que tu as écrit.