SingularPluralAffirmative sentencesThereisa cat in the room.Therearetwo cats in the room.Negative sentencesThereisnota cat in the roomTherearenottwo cats in the room.Thereisnocat in the room.Therearenocats in the room.QuestionsIsthere a cat in the room?Arethere two cats in the room?

Contracted forms ofthere is,there areContractions are only possitive fromthere is there'sThe formthere'reis not used.Do not form contracted forms in questions withis there/are there

SingularPluralAffirmative sentencesThere'sa cat in the room.Therearetwo cats in the room.Negative sentencesThere'snota cat in the room.Therearenottwo cats in the room.Thereisn'ta cat in the room.There'snocat in the room.Therearenocats in the room.QuestionsIsthere a cat in the room?Arethere two cats in the room?