my car was broken and I didn't know __to do? A what B how 说明理由

问题描述:

my car was broken and I didn't know __to do? A what B how 说明理由

A what
waht to do
how to do it不能说清楚点吗可以啊what在从句中作主语或宾语,相当于名词作用how在从句中作状语状语修饰什么状语修饰句子,或谓语比如 he clean the window with a clothwith a cloth方式状语