there be结构后接的句子成分是?是主语还是宾语?

网友回答

主语哈.there be 相当于是一个倒装的成分.
比如说桌上有一个苹果.
中文中苹果就是主语.
翻译成英语就是
there is an apple on the desk.
所以说是接主语.
on the desk 是介词短语做状语.
there是副词,所以不能做主语.
======以下答案可供参考======
供参考答案1:
分情况，看语境，举个例子。
there are 3 apples in my bag.
其后是主语3 apples。
there are 3 apples I can eat later。
其后就是宾语3 apples了。
供参考答案2:
宾语 比如说最简单的句型There's a tree. Tree就是宾语。
供参考答案3:
是主语。There is a boy in the room可以说成A boy is there in the room
There are some girls singing in the room可以说成
Some girls are singing there in the room
所以是主语，只不过是一种倒装。