`1`. Noboby is younger than my brother in my family.

$\Rightarrow$ My brother is the youngest people in my family.

`2`. The Sahara is the hottest in the world.

$\Rightarrow$ No desert in the world is hotter than Sahara.

`3`. No one is busier than my mother in my family.

$\Rightarrow$ My mother is the most busy in my family.

`4`. I have never taken such a hard test.

$\Rightarrow$ This test is the hardest I have taken.

`5`. It's the worst film i've ever seen

$\Rightarrow$ I have never seen a worse film than this one.

$\Longrightarrow$ Cấu trúc:

`1`. So sánh hơn của tính từ ngắn vần:

S1 + Be + Adj_er + than +S2 + O.

`2`. So sánh hơn của tính từ dài vần:

S1 + Be + more Adj + than + S2.

`3`. So sánh nhất của tính từ ngắn vần:

S1 + Be +  the + Adj_est + O

`4`. So sánh nhất của tính từ dài vần:

S1 + Be + the most + Adj + O