A subject pronoun takes the place of a noun when it is clear what is being talked about.

Here is a list of some subject pronouns.

FrenchEnglishNote
je / j’IBefore a vowel or the letter ‘h’, ” j’ ” is used instead.
tuyouThe singular informal - use for one friend or family member.
il / elle / on(he / it) / (she / it) / one
nouswe
vousyouThe singular formal / plural - Use for someone you don’t know very well or a group of people.
ils / ellesthey (masc / both) / they (fem)