This document discusses manner clauses, which are used to describe how something is done or how someone does something. It provides examples of using "as" and "as if/as though" in manner clauses, including emphasizing that the information in a manner clause with "as if/as though" may not be true. It also discusses using "like", "the way", and "how" to talk about manner. Manner clauses add detail about the way an action is performed or a state exists.