A speaker or writer uses us to refer both to himself or herself and to one or more other people. You can use us before a noun to make it clear which group of people you are referring to.
双语例句
例： Neither of us forgot about it.
我俩都没忘记它。
例： Heather went to the kitchen to get drinks for us.
希瑟去厨房给我们拿饮料。
例： They don't like us much.
他们不大喜欢我们。