English Interrogative Sentences

Types and formation of interrogative sentences | tag questions | common interrogative words are - what, when, where, which, who, whom, whose, why, how | These words are called wh-question words | Besides, 24 auxiliary verbs - am, is, are, was, were, do, does, did, have, has, had, may, might, can, could, will, would, shall, should, must, need, dare, used to and ought to - are frequently used for making interrogative sentences | how to use wh-question words with verb Be/Do/Have/Modals | use of how long/how much/how many | what if | patterns and examples of interrogative sentences