주격관계대명사

I met the man. and He was my first love.

1. 같은 명사, 대명사를 찾는다. the man, He

2. 사람이면 who, 사물이면  which 로 바꿔준다

3. who was my first love.

4. 같은 명사 바로 뒤에 넣어준다

결과    I met the man who was my first love.