Question

we have never seen so a beautiful city as Bangalore (comparative degree and superlative degree)

Answer 1

We have never seen a city more beautiful than Bangalore.(comparative degree)
Banglore is the most beautiful city, we have seen.(superlative degree)

Answer 2

Answer:

Comparitive : Banglore is more beautiful than any other city that we have ever seen.

Superlative : Banglore is the most beautiful city that we have evet seen.