he is proud of being rich
he is proud that he is rich.이거 밑의 문장을 왜 위처럼 바꾸나요? 주어 동사가 같으니까 그런가요?그리고i complained that my room was too hot
i complained of my room being too hot이거 문장 형식이 어떻게 바뀐건지 설명 좀 부탁드려요