This document provides examples of how to use "too" and "either" in affirmative and negative responses. "Too" is used with affirmative responses to indicate agreement, such as "I like coffee, I do too." "Either" is used with negative responses to indicate disagreement, like "I don't drink soda, I don't either." Examples are given of using "too" and "either" with subjects and auxiliary verbs in both agreement and disagreement.