I hate ---A-when people talk with their mouths full.

我讨厌人吃着满嘴东西和我说话.it作为句子的形式宾语,代替后面的宾语when people talk with their mouths full.
再问： 此处的 talk with 能用 talk about 代替吗？为什么
再答： talk about 后面跟谈论的内容。我认为此处的talk with 不是作为词组使用的，而是with their mouths full作为talk的方式状语，来修饰talk的。 这句话可以这样断开来读when people talk with their mouths full。不知道有没有说明白。