Asked by rfvv

I have a bad habit "of" watching TV too much.
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What is the role of "of"? Is 'a bad habit' and 'watching TV too much' in apposition?
Answered by Writeacher
No, they're not in apposition. The phrase "watching TV too much" is a gerund phrase, serving as object of the preposition "of" -- and the whole prepositional phrase is serving as an adjective describing "habit."

http://www.chompchomp.com/terms/gerundphrase.htm

http://www.chompchomp.com/terms/prepositionalphrase.htm