navi posted:1) I can act as well as John on a stage.Can't this sentence have three meanings:a) John doesn't act well on a stage. He acts well in another place (say, in front of a camera). I can act as well as him on a stage.b) I can act as well as John acts on a stage.c) I can act as well on a stage as John acts on a stage.
I agree with you that (1) can have (b) and (c) as possible meanings, but I see no basis for considering (a) a possible meaning.
To say that you can act as well as John on a stage is not to say how well John acts, on a stage or anywhere else he does acting.