The document discusses the use of the word "too" to express problems. It provides the definition of "too" as used to express a problem, and examples of its construction with adjectives, such as "The shoes are too big." The document then provides conversational examples, such as a customer trying on clothes and finding that the pants are too long and the blouse is too tight. Throughout, it reinforces that "too" is used to express when something is in excess or more than what is wanted or needed.