We use -ed adjectives to describe how a person feels about something or someone. They were amazed by the quality of the photos. He was excited to see his friends. We use -ing adjectives to describe a place, person or thing. London is an exciting city. Digital cameras are amazing inventions. ed adjectives are often followed by dependent prepositions: amazed by, annoyed with, with, excited about, fascinated by, interested in, tired of, worried about Dependent prepositions are followed by nouns or gerunds They were worried about the flight. They were worried about flying.