Recently I saw a commercial for Sylvan Learning Centers. This is a company that is selling products to help your children do well in school. The ad showed a teenage girl gabbing on the telephone. The voice-over said, “Sally sure can talk fast. We can help her read fast,” or something like that. Apparently grammar is not one of the subjects that Sylvan covers. How does a company that claims to help educate children manage to let a commercial with such an egregious grammatical error get all the way to the television screen? There must not be any English majors working in the marketing department over at ol’ Sylvan.

Fast is an adjective. You don’t do things “fast”. You do things quickly.