1) The document discusses the functions of speech including expressive, directive, referential, metalinguistic, poetic, and phatic utterances. It also discusses directives and how they can be imperative, interrogative, or declarative. 2) Politeness involves both positive politeness which emphasizes shared values, and negative politeness which pays respect to others. Address forms and social distance impact politeness. 3) Linguistic politeness differs across cultures. What is considered polite in one culture may be rude in another, such as assumptions around bringing food to a party. Sociolinguistic rules around requests and refusals also vary.