Как по английскому языку сделать сравнительную либо отличную степень к предложениям

Как по британскому языку сделать сравнительную либо отличную степень к предложениям

Ann is clever in the class. Ann is the cleverest in the class.

Tom is fast than Ben. Tom is faster than Ben.

My dress is beautiful than her dress.  My dress is more beautiful than her dress.

Lion is dangerous in the forest. Lion is the most dangerous in the forest.

 Cats are fluffy than dogs. Cats are fluffier than dogs.

Dogs are good in the world. Dogs are the best in the world.