
单数 someone 相当于第三人称,所以后接谓语动词单数。
例句
Someone took a shot at the car.
有人朝轿车开枪。
Theres someone at the door.
门口有个人。
Someone was beating at the door.
有人在打门。
Someone left you this note.
有人给你送来了这张便条。
Someone tapped at the door.
有人轻轻叩门。
I can hear someone calling.
我听见有人在呼叫。