Bonjou David,You mean the definite article?
Some people say there are three, some say there are four definite articles in Haitian Creole.
But I say ... you will see five!
an – as in tan an (the time)
la – as in tab la (the table)
lan- as in lank lan (the ink)
nan – as in chanm nan (the room) [people from some regions may say chanm lan instead of chanm nan]
There are some exceptions, such as:
we say zanmi an instead of zanmi a, lanmou an instead of lanmou a, etc...
You'll find the answers in the following links: The definite articles
Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words