Đáp án:

`-` So sánh hơn `:`

`=>` S1 + be + short adj `-` er / more + long adj + than + S2 + O.

`-` DHNB `:` than

Ex  `1:`

Dangerous `-` More dangerous

Fat `-` Fatter

Healthy `-` Healthier

Safe `-` Safer

Fast `-` Faster

Difficult `-` More difficult

Easy `-` Easier

Honest `-` More honest

Good `-` Better

Crazy `-` Crazier

Big `-` Bigger

Bad `-` Worse

Slow `-` Slower

Exciting `-` More exciting

Ex  `2:`

`1.`  shorter than

`2.`  cheaper than

`3.`  more friendly than

`4.`  more exciting than

`5.`  older than

`6.`  more expensive than

`7.`  better than

`8.`  bigger than

`9.`  easier than

`10.`  nicer than

`11`.  faster than

`12.`  worse than

`13.`  thinner than

`14.`  stronger than

Comparative: So sánh hơn

Tính từ có 1 âm --> Thêm er

Tính từ 1 âm kết thúc bằng chữ y --> Bỏ y thêm ier

Tính từ có 2 âm trở lên --> thêm more

$\text{#BTS}$