He has become more aware of what he wants to do and what he has to do to be a good Test bowler."<br/><a href='http://m.rediff.com/cricket/report/we-have-enough-skill-to-play-good-cricket-and-win-without-turners-england-tour-india-pix/20161129.htm' target='_blank' rel='nofollow'>http://m.rediff.com/cricket/report/we-have-enough-skill-to-play-good-cricket-and-win-without-turners-england-tour-india-pix/20161129.htm</a><br/>Please explain the grammar of "what" in the given context to me. I understand the meaning but just needs help to understand how and when to use "what".<br/>Is it a conjunction?