1/ English isn't so interesting as biology

-> Biology is more interesting than English.

2/ I'm not as good at English as him

-> He is better at English than me.

3/ His role is more important than mine

-> My role is not as important as his.

4/ My kitchen is biggest than yours

-> Your kitchen is smaller than mine.

5/ I haven't got as much money as you

-> You have more money than I do .

6/ French is more difficult than English

-> English is easier than French.

7/ Nam isn't so careful as his father

-> Nam's father is more careful than Nam.

8/ Mai is prettier than her sister

-> Mai's sister isn't so pretty as her.

9/ Hai Duong isn't so noisy as Ha Noi

-> Ha Noi is noisier than Hai Duong .

10/ My house is smaller than his

-> His house is bigger than mine.