• Your car isn't very new. I bought my car last month. My car is newer than your car. My car is newest that your car. My car is new than your car.
• Petra doesn't work hard. I work pretty hard. My mom works really hard. Petra works harder than my mom. My mom works the hardest. My mom works hardest than.
• Tomatoes in Mexico taste great. They don't taste good in the U.S. Tomatoes aren't as tasty in the U.S. as they are in Mexico. Tomatoes aren't so tasty in the U.S. so in Mexico. Tomatoes are as tasty in the U.S. as in Mexico.
• London is an expensive city. Mexico City is not an expensive city. London is expensive than Mexico City. London is more expensive than Mexico City. London is as expensive as Mexico City.
• Yesterday I felt sick. Today I feel great. I feel better today. I feel the better today. I feel as better today.
• My shoes cost 30 dollars, and yours cost 15 dollars. Your shoes are cheapest than mine. Your shoes are cheaper than mine. Your shoes are cheap than mine.
• My bag isn't as cool as yours. Your bag is cooller than mine. Your bag is cooler than mine. Your bag is coolest.
• This building is 500 years old. It is oldest building in the city. It is the oldest building in the city. It is the older building in the city.
• She is pretty. You are pretty. She is pretty than you. She is as pretty as you. She is prettier as you.
• I am happy. You are sad. I am happier than you. You are happier than me. I am happier as you.