4. My best friend loves to go to Seoul. The street food here is very delicious.
-> my best friend loves to go to Seoul where the street food is very delicious
-> cấu trúc trạng từ quan hệ where : place + where + S + V
-> dùng where thay thế cho địa điểm
5 Stephen Hawking’s scientific research has contributed a lot to humankind. Stephen Hawking is an English physicist.
-> the scientific research of stephen hawkins who is an English physicist has contributed a lot to humankind
-> cấu trúc mệnh đề quan hệ who : person + who + v + o
-> dùng who thay thê scho ng
6 My most favorite item of clothing is the blue T-shirt. My mother bought it for me.
-> my most favorite item of clothing is the blue T-shirt which my mother bought for me
-> my most favorite item of clothing is the blue T-shirt that my mother bought for me
-> cấu trúc mệnh đề quen hệ which :
-> C1 thing + which + s + v
-> C1 thing + that + s + v