Cấu trúc:

Khẳng định (positive): S + V + as + adj/ adv+ as + N/pronoun 

Phủ định (negative): S + V + not + so/as + adj/adv + N/Pronoun

1, My doll is pretty but her doll is prettier than mine.

→ My doll isn't as pretty as her doll.

2, Travelling by train is quite exciting but travelling by plane is more exciting.

→ Travelling by train isn't as exciting as travelling by plane.

3, My salary is high, but my husband's is higher.

→ My salary isn't as high as my husband's.

4, I am disappointed about my team's score. Ann is disappointed too.

→ I am as disappointed as Ann about mu team's score.

5, It's warm today, but it was much warmer yesterday.

→ Today it isn't as warm as yesterday.

6, I still feel a bit tired, but I am better than yesterday.

→ I don't feel as tired as yesterday.

7, Tom's essay is very good and mine is good too.

→ Tom's essay is as good as mine.

8, The Smiths have lived here for quite a long time, but we've lived here longer.

→ The Smiths haven't lived here as long as we've.

`1`, My doll is pretty but her doll is prettier than mine.

`→` My doll isn't as pretty as her doll.

`2`, Travelling by train is quite exciting but travelling by plane is more exciting.

`→` Travelling by train isn't as exciting as travelling by plane.

`3`, My salary is high, but my husband's is higher.

`→` My salary isn't as high as my husband's.

4, I am disappointed about my team's score. Ann is disappointed too.

`→` I am as disappointed as Ann about mu team's score.

`5`, It's warm today, but it was much warmer yesterday.

`→` Today it isn't as warm as yesterday.

`6`, I still feel a bit tired, but I am better than yesterday.

`→` I don't feel as tired as yesterday.

`7`, Tom's essay is very good and mine is good too.

`→` Tom's essay is as good as mine.

`8`, The Smiths have lived here for quite a long time, but we've lived here longer.

`→` The Smiths haven't lived here as long as we've.