thereare跟therewere有什么区别还有thereis跟therewas，意思有什么差别？thereis、are之类的不是有的意思吗？

Question

there are 跟 there were 有什么区别
还有there is 跟 there was， 意思有什么差别？ there is、are 之类的不是 有 的意思吗？

Answer 1

你的问题实际上就是一个问题：there be 结构,即“某地有某物,某时有某事”.
具体用法如下：
there are后面跟复数名词,表示现在某个地方有某些事物或人物.
There are many books in the library.图书馆里有许多书.
there were后面也是跟复数名词,表示过去某个地方有某些事物或人物.
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.
there is后面跟单数名词或不可数名词,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.
There is an old tree in front of the building.
这建筑物前有一棵古老的树.（现在）
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 is some milk in the glass.
杯子时有些牛奶.milk不可数.
There was some milk in the glass just now.
刚才杯子里还有一些牛奶.