I'm confused of when to use as. I thought as is used for comparing two clauses; however, that's not the case. Sometimes, I see as is used as a modifier. Can someone elaborate a bit?
AS can be used in the following ways
AS I walked, I became more nervous. (=during)
AS I had already paid, I was unconcerned. (=because, since)
AS we did last year, we will exceed our targets this year. (=in the same way)
AS a child, I delivered newspapers. (=in the stage of being)
