Webster's dictionary lists 'all' as an adjective, adverb, pronoun and noun. Swan's Practical English Usage (3rd edition) spends three pages talking about the usages, but I'm left unsure how to determine the part of speech for 'all.'
Webster gives "He spent his income all on pleasure" as an example of an adverb. If we rewrite it as "He spent all of his income on pleasure," is that still an adverb functioning the same way. Would both of them be adverbs of completeness?
Thanks for the help, Revlis Lain