Question

Change into comparative degree

i. This is the best book on the subject.

ii. Kolkata is the most populous city in India.


Change into superlative degree

i. No other boxer is as great as Mary Com.

ii. No other peak in the world is as high as Everest​

Answer 1

Answer:

1. This is better than any other book on the subject.
2. Kolkata is more popular than any other city in India.

I also say you the rule for your convenience.

Comperative degree rule: Subject (Which is being compared)+be verb+than+Comperative degree of adjective+any other/most other+Noun(With which being compared).

1. Mary com is the greatest boxer.
2. Everest is the highest peak in the world.

Here, I also say you the rule for your convenience.

Superlative degree: Noun(Which is being compared)+be verb+the/one of the+superlative degree of adjective+Noun(With which being compared).

It is your answer and if you follow the steps/rules then the degree change is too easy for you.