Question

Identify the adverb clause in the following sentence.

Before automobiles came on the scene, people often used horses as transportation.

Answer 1

I think it's Before automobiles came onto the scene

Just wanna be sure.

Answer 2

You are absolutely right. Adverb clauses indicate time periods. Before and until indicate the adverb clause.

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