the chairs are there为什么要加are?为什么不能写成the chairs there?

There are some chairs in the classroom the chairs are there为什么要加are?为什么不能写成the chairs there? there are two chairs beside the door.对two chairs提问________ beside the door? How many chairs are there in the room?改错 There are forty desks and chairs in the classroom. There are nineteen chairs in the classroom.(改为单数) There are three chairs in the room. （对three chairs 提问) There are two chairs under the tree.对 two chairs 提问 are there enough chairs是什么意思 there are some chairs in the classroom(变成否定句)there- - -chairs in the classroom- -是横线,填的 There are some chairs in the classroom.(改为一般疑问句） （ ）（ ）（ ）chairs in the classroom?要准确 急,There are many old balls under the chairs 改单数句,后面的chairs要改单数伐? how many chairs are there in the reading room? 什么how many chairs are there in the reading room?什么意思? There are (two chairs) beside the door.(划线提问）_________ beside the door. there are two chairs and a desk 根据加线部分提问There is a bed in the room.a bed 加线二、There are two chairs in the room.two chairs 加线请回答 There are a table and some chairs in the room句子改错 There are two chairs in the room.用how many提用帮忙!谢谢!