Argh, this is when I don’t get grammar, it gets me…so adverbs are words that end in “ly,” like “shortly, quickly, etc.” HOWEVER, adverb time clauses are dependent clauses (read: they don’t make sense on their own, they need another part of the sentence) which have little to no “ly” words from what I can see”:
When I grow up (that’s the dependent adverb clause because it doesn’t stand on its own…“when you grow up…what?”), I will be be a teacher.
It also works in the opposite: “I will be a teacher when I grow up.”
So, I’m still confussalated, however, the saving grace is that the following words may indicate you have an adverb time clause: “after, before, when, while, as, by the time, since, until, ‘till, as soon as, once, as long as, so long as, whenever, every time, the first/last/next time.”