a word that you use when you ask about sb/sth
the thing that
She ventured to enquire..in what quarter Mr Henchard could be found.
出自： T. Hardy
'I don't want him, if that's what you mean,' said Veronica.
出自： E. Bowen
What was the cause?
出自： J. Buchan
What could I..say against all this?
出自： J. Rhys
What the hell has it got to do with you where I work?
出自： J. Wain
What's that funny noise that keeps coming?
出自： I. Murdoch
The doctor will soon find out what's wrong.
出自： P. Ackroyd
I don't know what it's like to write a poem.
出自： M. Amis
I gave him what help I could.
What is required is some good books.
I do not know what he is and does.
What I am interested in you may not be interested in.
He asked me what I wanted. (疑问代词)
He gave me what I wanted.(关系代词)
He went, and, what is more surprising, actually won the prize.
He sent me books, magazines, newspapers, pictures, and what not.
They were then generally dirty, ignorant, superstitious, and what not.
He is a professor of physics.