1.Depends on what kind of relationship you have with the recipient
請問一下 這句我可以寫成下面這樣嗎?
depends on the recipient who you have what kind of relationship with
or depends on the recipient whom you have what kind of relationship
2.another technique is through an advert in which popular
celebrity endorses a product
請問一下為何要用in which?我查了一下好像沒有endorse in的用法
如果是in which=where 那後面endorse需不需要接in都不用管囉?
感謝大家回答~

2. 會有in是因為advert 名人"在廣告裡"為產品背書2.b 改成where的話 確實就不用in(我自己是有點顧慮因為廣告不是個"地方" 但也許母語人士根本不介意)我說的顧慮是指能不能改成where 不是改成where的話需不需要in1. 不可以 意思就是取決於關係 不是取決於某個人

Celebrity endorses a product in an advert所以那個 in 跟 endorse 一點關係也沒有