You're vs. Your
You're is the contracted form of You are. This form is used in sentences using "you" as the subject of the sentence with the verb "to be" used as either the helping verb (e.g. You're going ..., You're watching ...) or the principal verb of the sentence.
You're going to have a great time!
You're much better at tennis than Jim.
Your is the possessive pronoun form. This form is used to express that something belongs to "you".
Your wife is such a kind woman.
I think your skills are outstanding.
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