Interrogative sentence

Interrogative is a term used in grammar to refer to features that form questions. Thus, an interrogative sentence is a sentence whose grammatical form shows that it is a question. Such sentences are sometimes said to exhibit an interrogative mood—thus treating interrogative as one of the grammatical mood. This applies particularly to languages that use different inflected verb forms to make questions.

Interrogative sentences can serve as yes–no questions or as wh-questions, the latter being formed using an interrogative word such as who, which, where or how to specify the information required. Different languages have different ways of forming questions, including the use of different word order and the insertion of interrogative particles. Questions are also frequently marked by intonation, in particular a rising intonation pattern – in some languages this may be the sole method of distinguishing a yes–no question from a declarative statement.

Interrogative mood or other interrogative forms may be denoted by the glossing abbreviation INT.

Interrogative sentences are generally divided between yes–no questions, which ask whether or not something is the case (and invite an answer of the yes/no type), and wh-questions, which specify the information being asked about using a word like which, who, how, etc.

An intermediate form is the choice question, disjunctive question or alternative question, which presents a number of alternative answers, such as "Do you want tea or coffee?"

Negative questions are formed from negative sentences, as in "Aren't you coming?" and "Why does he not answer?"

...
Wikipedia