Confusing Your and You're is a common mistake made by learners and native speakers alike. This article explains the difference between them and when to use each one.
Your is a possessive adjective which shows that something belongs to someone or a group of people.
Where is my coat?
You put your coat over there.
Ok everyone, make sure you pick up your bags and put them on the coach.
Meanwhile, you're is a contraction of you are.
You are going to be the first to arrive.
You're going to be the first to arrive.
If a student has a problem choosing which one to use, simply explain to them that they need to expand the contraction and see if the sentence still makes sense.
* You're car is really dirty!
* an asterisk at the beginning of a sentence means it's ungrammatical.
* You are car is really dirty!
which is obviously wrong.So, it should be:
Your car is really dirty.
And looking at the picture on this page, if it's expanded it would read:
* Now your are cooking.
Which is just plain wrong!