An independent clause is...
An dependent clause is...
Purple has been my favorite color since I was seven years old.
I forgot to buy milk while I was at the store.
Before I left the house this morning, I ate breakfast.
I always enjoy munching on popcorn while I am at the movies.
My mom always hangs her keys by the door when she gets home.
This is the homework assignment that you missed last week.
The moon shone on the ocean while the whales rose to the surface.
Louis Braille lost his sight in an accident when he was three years old.
The weather is beautiful today, so I’ll take a walk.
This assignment is easy if you have taken a grammar course.
I hate to drink coffee because it always upsets my stomach.
Frank will be busy because he is studying.