1)The weather today is not as warm as yesterday.
The weather yesterday is warmer than today.
The weather today is colder than yesterday.
2)The dinner table is not as low as the coffee table.
The dinner table is higher than the coffee table.
The coffee table is lower than the dinner table. 
3)A collie dog is not as weak as the poodle dog.
The collie dog is stronger than a poodle dog.
The poodle dog is weaker than a collie dog.
4)Autumn is not as dry as summer.
Summer is drier than Autumn.
Autumn is rainier than summer.
5)A park is not is big as forest.
A forest is bigger than a park.
A park is smaller than a forest.
6)My sister is not as old as my brother.
My sister is younger than my brother.
My brother is older than my sister.
7)The cinema is not as old as the theatre.
The theatre is older than theatre.
The cinema is newer than the cinema.
8)The coffee is not as hot as the tea.
 The tea is hotter than the coffee.
The coffee is colder than the tea.