“There were”和“There was”都属于“There be”句型,Therebe句型是英语中常用句型,意思是“有”,表示“人或事物的存在”或“某地有某物”。There在此结构中是引导词,已经没有副词“那里”的含义。

There was + 单数名词或不可数名词, 用于一般过去时,表示现在某个地方有(单数的或)一个事物或一个人或某些(不可数的)事物

如:There was an old tree in front of the building two weeks ago.两周前这建筑物前还有一棵古老的树.

There were+复数名词, 用于一般过去时,表示过去某个地方有某些事物或人物

如:There were many old buildings in this street ten years ago.十年前这条街道上有许多古老的建筑物