Don't Be Afraid of Contractions!

'm = am (I'm)
're = are (you're, we're, they're)
's = is and has (she's, he's, it's)
've = have (I've, you've, we've, they've)
'll = will (I'll, you'll, she'll, he'll, it'll, we'll, they'll)
'd = had and would (I'd, you'd, she'd, he'd, it'd, we'd, they'd)

Negative Contractions
(auxiliary verb + not)

aren't=are not
can't=cannot
couldn't=could not
didn't= did not
hasn't=has not
haven't=have not
isn't=is not
mustn't=must not
shouldn't=should not
wasn't=was not
weren't=were not
won't=will not
wouldn't=would not