see sb. do sth. 在被动语态中,要加上省略的to,那see sb. doing sth. 呢?

2024-10-29 14:53:55
推荐回答(2个)
回答1:

sb .be seen doing sth

不加, 因为to 是副词,不接ing.

回答2:

see sb. doing sth. 不需要加to。