I want to find out(with whom)I will play table tennis.为什么要加with?

问题描述:

I want to find out(with whom)I will play table tennis.为什么要加with?

宾语从句,因为后面的play table tennis with +人, with不能省。

play table tennis with somebody

with whom是提前,后面有个短语play table tennis with whom,提前是为了让提问的目标更醒目.