There, their and they're

You should use their when yo are saying something belongs to somebody.

You should use they're when you are saying they are because the apostrophe is taking a letter out so is is a contraction meaning they are together.

There should be used when you are saying over there or right there.


Examples:

There is the phone
Over there

Their cat is right there
Their phone is over there

They're going to the movies
They're going to have a swim

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