This document discusses phrasal verbs, which are verbs combined with prepositions or particles that create a particular idiomatic meaning. It provides examples of common English phrasal verbs and their literal and idiomatic meanings. Specifically, it examines the phrasal verbs "put out", "pick up", and "take off" to illustrate how the same words combined can mean extinguishing something, learning something, or leaving the ground respectively, depending on the context.