7. He is……of four children. (fat) 

`⇒` He is the fattest of four children.

8. Those books are ..... than the other books. (expensive) *

`⇒`Those books are more expensive than the other books.

9. My drink is ..... of all the drink. (cold) 

`⇒` My drink is the coldest of all the drink.

10. I am .... my mother. (tall) 

`⇒` I am taller than my mother.

So sánh nhất :

S + Verb + the +  short adj / adv + est                         in + Danh từ số ít

                             most + long adj/adv+ (Noun)          of + Danh từ số nhiều

                             least + long adj/adv

7.the fattest

8.more expensive

9.the coldest

10. taller than

Mik gửi bạn