Mount Everest is the highest mountain in the world. No mountain....
No mountain in the world is higher than Mount Everest.
There isn't anybody as kind-hearted as your mother. Your mother is .... (than)
Your mother is more kind-hearted than anyone.
My boss works better when he is pressed for time. The less...
The less time my boss has, the better he works.
He works much. He feels tired. The more...
The more he works, the more tired he feels
If you read many books, you will have much knowledge. The more....
The more books you read, the more knowledge you will have.
This computer works better than that one. That computer .... (as)
That computer doesn't work as well as this one
No one in my class is taller than Peter. Peter ....
Peter is the tallest boy in my class.
No river in the world is longer than the Nile. The Nile ....
The Nile is the longest river in the world.