there is 和 there are 的用法

English有There are & There is對,因(看下):
There is a boy.
這裡有一個男孩

There are some boys.
這裡有一些男孩

如果在你這句:
There are gold and sliver in your house係錯~
因(看下):
There is gold and sliver in your house.
這裡有金銀在你屋.

There are gold and sliver in your house係錯
應變:
There are golds and slivers in your house
golds and slivers要是more than one!
這裡有金銀在你屋.

the Upper one is correct, the lower one wrong.

There is gold and silver in yr house. - "right"

There are gold and sliver in your house.
E句是對的。