Desperate(形容词做主语补足语), I wrote a letter to Henry Ford II and told him what happened. (名词性从句 ) Sb be desperate, to be in such a bad situation that be willing to do anything.– People in that area were desperate to have some drinking water.
Sb be desperate for sth: want or need sth very much indeed.– People are desperate for him to do something.
A desperate situation is very difficult, serious, or dangerous.– India's United Nations ambassador said the situation is desperate...