To GG:
I've been in the communications field
just about (=almost) my entire professionallife. I write for a living. My nickname was poorly chosen -
I reallydon't that much about grammar, but I really do know what reads well.And I make a lot of typos.
Is ''just about my entire professional life'' an adverb clause/phrase?
I couldn't understand the sentence ''I really don't that much about grammar''. I could have written it ''I'm really not that much about grammar''.