Re: What does "be of adjective or noun" means, and how to use it
Generally, what comes after an "of" will be a noun phrase.
Usually, I'd say only "when I was your age." ("Age" is still a noun here. "Your" will come before a noun phrase as well.) To me "When I was of your age" doesn't sound natural.
He is of an age when he should know better.
Last edited by Barb_D; 17-Feb-2012 at 00:59.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.