`\color{#145277}{N}\color{#246483}{a}\color{#34768F} {e}\color{#44889B}{u}\color{#539AA7}{n}`

`1.` I think travelling by plane is much more expensive than by train.

`-` I think `...` : tôi nghĩ rằng

`-` Chủ từ là `1` V_ing `=>` luôn chia động từ dạng số ít

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N

`2.` To me, health is more important than money.

`-` To me : theo tôi 

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N

`3.` Life in the countryside is more peaceful than in the city.

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N

`4.` The healthcare service in the city is better than that in the countryside.

`-` "that" : thay thế cho danh từ phía trước (healthcare service)

`-` healthcare service : dịch vụ chăm sóc sức khỏe

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N

`5.` The air in rural areas is fresher than in urban ones.

`-` Ones : thay thế cho danh từ phía trước (areas)

`-` rural : nông thôn `ne` urban : đô thị

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N

`6.` David looks stronger than John.

`-` Look `+` adj : trông có vẻ như thế nào

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N

`7.`  I am better at English than my sister.

`-` better at `=` good at : giỏi về cái gì

`-` So sánh hơn : S + V + adj-er `/` more adj + than + N