它的主语是人。
arrive at：接名词或代词作宾语。也可接以形容词充当补足语的复合宾语
如：
We arrived at the Shanghai Railway Station at 11:00 pm last night.
When we arrived at Wuhan Airport， it's midnight.
arrive at +小地方
比如:学校、车站、公园、某个建筑物等
He arrived at school at 7 o'clock.
他于7点钟到达学校。
I will call you when I arrive at the park.
当我到公园的时候，我会打电话给你的。
They arrived at the supermarket an hour ago.
他们在一小时之前到了超市
