都可以用，关键看你组织的语言，和想表达的意思。

There are…，是复数句数，表示有不止一样的东西存在。

There is…，是单数句型，表示仅一件物品的存在。

应该注意的是，There be句型是主谓就近原则，即最靠近be的主语(物体)是单数，则be用is。若最靠近be的主语(物体)是复数，则be用are。

比如，介绍房间内设施和佈置时，

我的房间里有一张桌子和两把椅子。

There is a table and two chairs in my room.

墙上有两幅画和一张地图。

There are two puctures and a map on the wall.

My room

Look, I have a nice room.come and have a look.

It's small and nice.There is a big bed, a small desk,a shelf and a closet .The bed is near desk.There is a shelf near the closet too. My good books are in the shelf.I like the books very much.There is a big board on the wall.I often write and draw pictures on the board.

Oh, my bed room is too beautiful.I like it very much.Do you like my bedroom?Can you tell me about your badroom?