feel + adjective
I feel great.

feel + adjective + for + noun/pronoun
I feel sorry for him.

feel + adjective + about + -ing form
I feel bad about postponing the party.

feel + clause
I feel I have to apologize.

feel + that + clause
I feel that I have to apologize.

feel + adjective + to + base form
It felt strange to see her again after so many years.

feel + like + noun
I felt like a complete idiot.