How is רעב pronounced? In other exercise: ואני לא רעב ... = I (male) am hungry [pronounced reev] הילד רעב ... = The boy is hungry [pronounced raev]
The adjective would then take on a definite article, so it would be הילד הרעב
No. Most words in Hebrew have three letter roots. In this case, the root of רעב is resh-ayin-vet and the root of רע is resh-vav-ayin - vav is a weak root letter so it can drop.