The director had her assistant ( pick up ) some hot dog for the meeting为什么括号里填pick up 而不填 picked up?不是有had吗

The director had her assistant ( pick up ) some hot dog for the meeting为什么括号里填pick up 而不填 picked up?不是有had吗
The director had her assistant ( pick up ) some hot dog for the meeting
为什么括号里填pick up 而不填 picked up?
不是有had吗

The director had her assistant ( pick up ) some hot dog for the meeting为什么括号里填pick up 而不填 picked up?不是有had吗
这是一种特殊的语法 have, make, let 这三个词表示让某人做某事 使某人做某事时 后面的动词用原型.这个例句中had不是助动词,他表示的就是让他的助手给他带热狗.所以用pick up 而不用 picked up. 呵呵 好好努力啊

这是Have sb do sth的应用
你说的 Have sb done 是被动语态，用在这里不合适
因为assistant是人，而不是物，且根据句意，应该用原形
请采纳！

楼上已经回答了，我来晚了···这是一个固定的用法