You must say this word or phrase frequently. But are you using them correctly?
Follow this simple explanation:
“a” is an adjective and “while” is a noun. See the difference below.
Compare these two sentences:
I watched the show for a while.
I watched the show awhile.
“While” is a noun. While needs a preposition to use it properly.
I+watched+show. That’s the basic form. You need a preposition to connect them using “while.”
We watched the show for a while. Correct.
I’ll be back in awhile. Incorrect
“Awhile” is an adverb. Adverbs modify verbs, adjectives and other adverbs. They describe how and don’t need a preposition before them.
Stand here awhile.
Mike and Susan spoke awhile.
Remember, “while” needs a preposition. It has to be a two-word phrase. “Awhile” is an adverb (describes how) and can stand alone.