There are a chair and a desk in the room.There is a bed,a box,a table and a mat in my room.请高人指教,为什么上一句用are,下一句用is,

There are a chair and a desk in the room.There is a bed,a box,a table and a mat in my room.请高人指教,为什么上一句用are,下一句用is,
There are a chair and a desk in the room.There is a bed,a box,a table and a mat in my room.
请高人指教,为什么上一句用are,下一句用is,

There are a chair and a desk in the room.There is a bed,a box,a table and a mat in my room.请高人指教,为什么上一句用are,下一句用is,
there be 句型,这要看紧挨着be的词性.如果后面是单数,就用is .复数就用are.
There is a desk and two chairs in the room.
(紧挨着be动词的主语是a desk,是单数,故be的形式要用is)
如果反过来,there are two chairs and a desk in the room.
这都适用的.请注意观察.上面你的例子第一个有些问题.你可以再多查查看.

房间有一把椅子和一张桌子 我的房间有一张床 一个盒子 一个桌子和一个垫子