a. The Nile/ long/ river/ in the world. 

⇒The Nile is the longest river in the world

b. Lan/ tall/ student / in my class. 

⇒Lan is the tallest student in my class

d. Australia/ small/ continent in the world.

⇒Austrailia is the smallest continent in the world

e. That/ high/ mountain in the world.

⇒That is the highest mountain in the world.

Cấu trúc

a. Tính từ ngắn:

- S + V + the + adj + EST ….

b. Tính từ dài:

- S + V + the MOST + adj ….

*Cấu trúc: 

-Với từ có một âm tiết:the + adj/adv+ -est.

-Với từ có hai âm tiết trở nên:the + most + adj/adv.

a)The River Nile is the longest river in the world

b)Lan is the tallest student in my class

c) English coffee is the worst of all

d)Australia is the smallest continent in the world

e)That is the highest mountain in the world