`1`. as 

$\longrightarrow$ có as nên ta dùng as 

$\longrightarrow$ S + V + as + Adj/Adv + as + N/pronoun

`2`. than

$\longrightarrow$ có more difficult: Dấu hiệu so sánh hơn

$\longrightarrow$ S + be + more + Adj/Adv + than + O/N

`3`. as 

$\longrightarrow$ the same as: so sánh bằng

$\longrightarrow$ S + V + the same + N + S + N/pronoun

`4`. from

$\longrightarrow$ diffrent + from: so sánh bằng

$\longrightarrow$ S + to be + different from + N/pronoun.

`5`. as 

$\longrightarrow$ có as nên ta dùng as 

$\longrightarrow$ S + V + as + Adj/Adv + as + N/pronoun

`6`. than 

$\longrightarrow$ nicer: tốt hơn: so sánh hơn 

$\longrightarrow$ S + be + Adj/Adv + -er + than + O/N

`7`. from 

$\longrightarrow$ diffrent + from: so sánh bằng

$\longrightarrow$ S + to be + different from + N/pronoun.

`8`. as 

$\longrightarrow$ the same as: so sánh bằng

$\longrightarrow$ S + V + the same + N + S + N/pronoun

$#Hoctot$

1/ than

2/ than ( vì trước đó có chữ more ⇒ so sánh hơn )

3/ as ( Vì ta có công thức : The same + as + N ) 

4/ from ( Vì different + from )

5/ as ( Vì sau đó có chữ as ⇒ so sánh bằng )

6/ than ( Vì từ nice thêm r ⇒ so sánh hơn )

7/ from ( Vì different + from )

8/ as ( Vì ta có công thức : The same + as + ....... )