`1.` The journey is slower by train than by car.

`2.` You should drive less dangerously.

`3.` I've never done any exam more difficult than this one.

`4.` We stayed in the dirtiest hotel in the world.

`5.` She doesn't want to have a more stressful life.

`-------------`

*So sánh hơn:

`\text{- Short adj/adv: }`

`\text{S + tobe/V + adj/adv + -er + than + ... }`

`\text{- Long adj/adv: }`

`\text{S + tobe/V + more + adj/adv + than + ... }`

* So sánh nhất:

`\text{- Short adj/adv: }`

`\text{S + tobe/V + the + adj/adv + -est + ... }`

`\text{- Long adj/adv: }`

`\text{S + tobe/V + the most + adj/adv + ...}`

`color{red}{#lgdr}`

`1` The journey is slower by train than by car .

`-` So sánh hơn tính từ ngắn : S1 + be + adj-er + than + S2 .

`2` You should drive less carelessly .

`-` So sánh kém trạng từ dài : S1 + V + less + adv-dài + than + S2 .

`3` It was the least difficult exam I've ever done .

`-` So sánh nhất kém tính từ dài : S + be + the + least + adj-dài + N + O .

`4` We stayed in the dirtiest hotel in the world .

`-` So sánh nhất tính từ ngắn : S + be + the + adj-est + N + O .

`5` She wants to have a less stressed life .

`-` So sánh kém tính từ dài : S1 + V + less + adj + N + than + S2 .