关于宾语从句it的用法
她是这样说的：
若宾语从句是wh-类,则不可用it代替
We all consider what you said to be unbelievable.
我们都认为你所说的是不可信的.
然后又说：
②有些动词带宾语从句时寻要在宾语与从句前加it
这类动词主要有:hate,take ,owe,have,see to.
I hate it when they speak with their mouths full of food.
我讨厌他们满嘴食物时说话.
不是说wh-类不可以用it吗?那一句I hate it when they speak with their mouths full of food.中有when又用it呢?