Where are you heading for?介词加副词?

Where are you heading for?介词加副词? Where are you heading for?介词加副词?where作为副词,可以做宾语? Where are you heading,John? 答语是shenyang ,where are you heading for 和which are you headin Where are you heading?是什么中文意思 where是地点副词所以不能加介词,那where are you from是怎么回事?还有where to do it who是副词吗?副词后都不加介词吗?where are you going shoping Where are you from? 这个句子中介词from 为什么可以和副词where 连用而不省略呢? 再问别人要去哪里的时候?where are you ( headed 和 where are you ( heading where are you headed?这里为什么用head 过去式?用heading是一样的吗? 疑问副词是否全都不用介词修饰?但是像where are you from?的where 是疑问副词啊 How do yo you are heading into a blind alley