Comparative and Superlative
The Burj Khalifa is (tall) skyscraper in the world.
The Burj Khalifa is the tallest skyscraper in the world.
Is this correct? Buddy is longer than of all the pets.
No, it isn't. Buddy is the longest of all the pets.
Scarlett Johansson is (beautiful) actress of Hollywood.
Scarlett Johansson is the most beautiful actress of Hollywood.