관계사 중 (우리에게) 제일 어색하게/어렵게 보이는/느껴지는 것이 소유격 관계대명사입니다
Depression is a disease whose main symptoms are low motivation and depression은
1 Depression is a disease라는 문장과
2 Its main symptoms are low motivation and depression라는 문장을 하나로 묶으면서, its라는 소유격 대명사대신 whose을 써서 나타낸 것 뿐입니다
* depression(이라는 질병)의 주요 증상은 depression이다 ~ 식은 좀 바꿀필요가 있습니다.
다양한 표현 방식
He's written a book the name of which I've forgotten. => Depression is a disease the main symptoms of which are low motivation and depression도 가능합니다.
He's written a book whose name I've forgotten.
He's written a book of which I've forgotten the name.
He's written a book that I've forgotten the name of
소유격 정말 어려운 문제
https://kin.naver.com/qna/detail.naver?d1id=11&dirId=11080302&docId=459230951&qb=Z29zc2lwIHdob3Nl&enc=utf8§ion=kin.qna&rank=1&search_sort=0&spq=0
By producing gossip, whoever knows another's personal affairs tends to turn the fact that he knows into something socially valuable like social recognition and prestige, because he assumes that some of the fame of the subject of gossip, as whose friend he present himself, will rub off on him