为什么Here is my umbrella and my coat用is 反过来就用are?

Here is my umbrella and my coat用is 反过来 My umbrella and my coat are here 用 are?
主语不一样啊.
Here is my umbrella and my coat用is
主语是here 是单数的.
My umbrella and my coat are here 用 are
主语是：My umbrella and my coat两个东西,是复数的.
就像：
He likes cats.
Cats like he.
只有主语才决定谓语形式.跟后面的无关.