what,where ,who,which,who,whom,how都是什么词性

what who which who whom 是代词,在句中可做主语,宾语和表语,但whom中做宾语。
如 What is happening in the classroom?
I believe what you said。
Could you tell me which is the nearest way to the post office?
Give the book to any who likes it 。
You can invite anyone whom you like to your party。
wher how是副词在句中做状语。where在引导名词性从句时还可做表语,如
I don't know where it is。
My problem is how we can finish the work in such a short time。
Where can we buy such beautiful clothes?
再问： 那么why与whether什么词性
再答： why是副词，在句中做状语。whether无词性，只有词义引导名词性从句，不做从句成分。如 I don't know whether he likes the gift that I gave him。 The reason why he didn't go to school is that he was will。