aunt father for photos there thanks this be thesearemyparents单数，it'sa photoofhisfamily同义句，isthatyourgrandparent复数，thosearefamilyphotos单数。This is my parent.It'shis familyphoto.Arethose yourgrandparents?That isafamilyphoto .祝你快乐！this is my ruler。that is his dictionary。this is my uncle。these are his pens。复数，复数，疑问，疑问。Isthis your ruler ?Isthat hisdictionary ?Isthis yuruncle?Arethesehispens ?are the ld cards on the dresser?作出否定回答No,they aren't .