The document discusses the use of "there is" and "there are" in question form. It explains that "there is" is used for singular nouns to ask if one thing exists, while "there are" is used for plural nouns to ask if multiple things exist. Some examples of questions using "there is" and "there are" are provided, as well as how to answer them affirmatively or negatively. It also discusses using "any" in questions to ask if some unspecified number of things exist.