This document discusses the simple present tense interrogative form in English. It begins by explaining that "do" is used as an auxiliary verb to form questions, but is not translated from English. For third person questions, "does" is used instead of "do". The document then provides examples of interrogative sentences using auxiliary verbs and inverted word order, such as "Does she play?". It also demonstrates short affirmative and negative answers to questions using "yes/no" and contractions.