There
* Meaning: A place or location.
* Examples:
* "The book is over there on the table."
* "Let's go there for lunch."
* "There are three apples in the bowl."
Their
* Meaning: Possession belonging to more than one person.
* Examples:
* "The children are playing with their toys."
* "The dog wagged its tail."
* "It's their responsibility to clean up the mess."
They're
* Meaning: A contraction of "they are."
* Examples:
* "They're going to the movies."
* "They're very excited about their trip."
* "They're always late."
Quick Tip: If you're unsure which word to use, try substituting "they are" for "they're." If it makes sense, then "they're" is the correct word. If it doesn't, then you need to use "their" or "there."