2
Richie's house isn't as comfortable as George and Marlene's.
George and Marlene's house is more comfortable than Richie's.
3
Detroit isn't as sunny as Cancun.
Cancun is sunnier than Detroit.
4
Marlene's house isn't as interesting as Richie's island.
Richie's island is more interesting than Marlene's house.
5
Cancun isn't as noisy as Detroit.
Detroit is noisier than Cancun.
6
Villages aren't as polluted as big cities.
Big cities are more polluted than villages.