1. Comparative - Big difference:
- The Eiffel Tower is taller than the Statue of Liberty.
- The population of China is larger than that of Japan.

- Small difference:
- The temperature in summer is slightly higher than in spring.
- The price of this shirt is a little lower than the price of that one.

2. Superlative - As ......... as.....:
- She is as tall as her older sister.
- This restaurant is as popular as the one downtown.

- Not as ....... as.....:
- The coffee here is not as good as the one at the café next door.
- He is not as fast as his brother in running.

- Less .... than:
- The blue dress is less expensive than the red one.
- This car is less fuel-efficient than the hybrid model.

@Công thức : 

→ Cấp so sánh hơn của tính từ : 

Tính từ ngắn : 

S1 + Tobe + short adj + er + than + S²

Tính từ dài : 

S1 + Tobe + more + long adj + than + S²

→ Cấp so sánh hơn nhất của tính từ : 

Tính từ ngắn : 

S + Tobe + The + short adj + est + ..

Tính từ dài : 

S + Tobe + the most + long adj + ..

→ Cấp so sánh ngang bằng của tính từ : 

S1 + Tobe + as / so + ( adj ) + as + S²

@Thaonguyen0309