The giraffe is taller than the tiger. The tiger isn't.....
The tiger isn't as tall as the giraffe.
Max is faster than Joe. Joe isn't ........
Joe isn't as fast as Max
Ronaldo is/isn't....
Ronaldo isn't as young as Messi
Peter is hotter than Fred. Fred.....
Fred isn't as hot as Peter.
a rollercoaster / TV (exciting)
TV isn't as exciting as a rollercoaster
A hammerhead shark is/isn't
A hammerhead shark isn't as dangerous as a Great White shark
Pizza / Salad (healthy)
Pizza isn't as healthy as salad