I'm on the opposite of 句子是否正确?

I'm on the opposite of the bank..这句话不对的,听起来特别别扭.
语法好像也不对,但具体哪里不对我 / 你还得去问别人.哈哈.
地道的说法——I'm opposite the bank.
>> I'm opposite your house.
>> I'm opposite the river.
>> I'm opposite the mall.
2.I am across from the bank / THe post office is across from the bank.
Across from 前面的主语,是人,是物,都可以的哦!
>> I am across from his house.
>> I am across from the mall.
>> The bird is across the river.
>> The telephone is across the street.
o(∩_∩)o 希望你圣诞节过得很愉快～