someone后面加什么
someone作主语时，后接动词的第三人称单数形式。
例句
Someone came out for a smoke.
有人为了吸烟而出来了。
Someone was beating at the door.
有人在打门。
Someone tapped at the door.
有人轻轻叩门。
Someone was beating a drum.
有人在敲鼓。
Someone was pounding at the door.
有人在砰砰地敲门。
Someone was ringing the doorbell.
有人在按门铃。
Someone will trip over that cable.
有人会让那条电缆绊倒的。