Style Guide of Common Errors in English Grammar for Writers

your, you're

'Your' is the possessive form of 'you.' He's wearing your shirt. Punch him in the teeth and take it back before he stretches it with his fat no-neck.
'You're' is a conjunction of 'you' and 'are.'

Storm Shadow shook his head at his new ninja-in-training. "You're going to hurt your fist if you keep punching like a moron."

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