This document provides a grammar sheet on yes-no questions and short answers in English. It gives examples of yes-no questions using subjects like "you", "your mom", "your friends" and the auxiliary verbs "do" and "does" followed by short answer choices of "yes, I/he/she/we/they do" or "no, I/he/she/we/they don't". It also reminds the reader to use "does" for questions with the pronouns "he", "she" and "it" and provides time expressions like "on Mondays" and "in the evening" to use in the present tense.