Here are some of the most common slang contractions in English. They are used in English books as well as formal and informal conversations. I'm = I am I'll = I will she's = she is she'll = she will he's = he is he'll = he will It's = It is it'll = it will they're = they are they'll = they will you're = you are you'll = you will we're = we are we'll = we will I've = I have I'd = I would she's = she has She'd = she would he's = he has he'd = he would it's = it has it'd = it would they've = they have they'd = they would you've = You have you'd = you would we've = We have we'd = we would