There are a lot of wonderful Chinese painting____(see)in the Palace Museum

There are a lot of wonderful Chinese painting____(see)in the Palace Museum
There are a lot of wonderful Chinese painting____(see)in the Palace Museum

There are a lot of wonderful Chinese painting____(see)in the Palace Museum
There are a lot of wonderful Chinese【 paintings 应该是复数】【seen】in the Palace Museum.
这是固定句型结构的一部分：
There is/are 、、、、、、doing/done.
当There be 句型的主语与后面所接动词是【主动关系时】,用【doing ——v-ing形式】；
是【被动关系时】,用【done——动词的过去分词 】.
此句中,【Chinese paintings】与后面【see】即被动关系——【画被看见】,因此,用过去分词.

seen

seen

seen