big 大
bigger 更大
biggest 最大
famous 有名
不能说 famouser 或者 the famousest
应该用 more / most
more famous 更有名
the most famous 最有名
beautiful 漂亮
不能说 beautifuler 或者 the beautifulest
应该是
more beautiful 更漂亮
the most beautiful 最漂亮
Which city is more crowded, Beijing or Kunming?
哪个城市更拥挤,北京还是昆明?
Beijing is more crowded than Kunming.
北京比昆明拥挤
crowded 拥挤
Which is the most beautiful country in the world?
哪个国家是世界上最漂亮的?
Canada is the most beautiful country in the world.
加拿大是世界上最漂亮的国家。
He is taller than his brother.
他比他兄弟高
Our car is the fastest of all.
我们的车是所有车最快的
Bob has the biggest feet in the class.
Bob 有全班最大的脚
Do you think a cellphone is more useful than a computer?
你觉得手机比电脑有用吗?