Do you mean five instances of the word because in one sentence? Ooh, that would be one ugly sentence....
I went to school because I wanted to get good grades because I wanted to go to university because I wanted to get a degree because I wanted to get a good job because I wanted to retire rich.
Of course, in "The Wizard of Oz", Dorothy and the Scarecrow sing,
"We're off to see the Wizard, the wonderful Wizard of Oz.
He is the wonderful Wiz he is... because of the wonderful things he does!
Because, because, because, because, BECAAAAAUSE...
Because of the wonderful things he does!"
-That's five "because's" in a row!
Because i was late to school, my teacher, Mrs. Because gave me a detention, and because of that detention, my friend, Mrs. Because's son, won't talk to me, all because of that stupid detention slip.
That was five becauses and it wasn't a run on sentence.
The woman was incapacitated for five weeks because she fell out of a window
She had to truncate her story, so that it would fit into the five minute session.
It is preposterous to pay a thousand dollars for a five dollar meal.
I was quite dishearted on reading my map to realized I still had five miles to walk.
The man was on the oust because he was diffrent.
"I don't like to get too drunk downtown because it's a five mile walk home and cabs are not cheap."
The number 202.45 has five significant digits.
She has been playing the viola since she was five.
So- you are asking when to use 'when' in a sentence. When you are asking how to use when in a question, you are already using when in a sentence, because a question actually is a sentence. I like to use when in a sentence whenever I like.
The woman was incapacitated for five weeks because she fell out of a window
The number 202.45 has five significant digits.
car has capacity for five persons
Sara had to repeat the directions five or six times.
You cannot end a sentence with because, because because is a preposition.
A sentence using anything less:You can take anything less than five.
I gradually did not understand your question because you did not give "the sentence" that you're asking how to use it in.
He had seven cars, but the bank repossessed five of them. He had a cookie, but someone ate it.