There are too many people who do not understand which there/their/they're to use and which to/too/two to use. It's an epidemic at this point. There are six different words represented here, and each deserves its fair shake. Let's go over each one.
There- referring to a place, or used ambiguously to refer to a situation.
- The fish tanks are over there.
- There are ten fish tanks currently available.
- There is a sale on small fish tanks tomorrow.
- There is no way out of this situation.
- We need to put the fish tank over there.
- We'll have to move the t.v. from there to there so we can put the fish tank over there.
Their- used to describe possession.
- That is their house right over there.
- Their porch light is on.
- Their dog is a mean one.
They're- a contraction that puts they and are into one word.
- They're away for the weekend.
- They're never able to get away.
- They're so tired from all of the hard work that they put in at the office.
Let's move on the to the to/too/two situation that also plagues our country.
To- can be used a number of ways. It is normally a preposition, and is often used to describe direction or denote the purpose of something. It can also be used to show possession or association.
- I am going to the store.
- I have to take out the trash.
- Where's the lid to this sippy cup?
- I love to dance.
- I have to get some juice for DeLaynie.
- What do you want to do for dinner?
Too- means "also" or can be used to describe an excess of something.
- Will you take your brother too?
- There are too many children who do not receive proper discipline.
- There is too little time to get everything done.
- I forgot to tell you that we need toilet paper too.
- Are you coming too?
Two- is a number. 2.
- I have two children.
- Two is the number between one and three.
- Four divided by two equals two.
I hope that by working together, we can combat the lack of understanding plaguing this country. Remember, every word is special, designed with the purpose of communicating a wonderful message. Every word has a meaning, and every meaning deserves a word.