Comparison between two things:

 Few teahcers in the world are as sharp as Senthil.

Senthil is sharper than most other teachers in the world.

But how? 

Read this.

Comparison between two things:

Model – 1

·       Comparing two unequal things.

·       Sub. + verb + As – positive adjective – as + obj.

·       Sub + verb + Comparative adjective + than + obj.

Positive : Birds do not fly as fast as the aeroplane.

Comparative : The aeroplane flies faster than birds.

Positive. --This razor is not as sharp as that one.

Comparative. -- That razor is sharper than this one.

Positive	Comparative
Vegetables are not as costly as fruits.	Fruits are costlier than vegetables.

Comparison between two things:

Model – 2

·       Comparing two unequal things.

·       Sub. + verb + not + So – positive adjective – as + obj.

·       Sub + verb + Comparative adjective + than + obj.

 (Positive degree) Hindi is not so difficult as English.

(Comparative degree) English is more difficult than Hindi.

(positive degree) Kamal is not so tall as vimal.

(comparative degree) Vimal is taller than Kamal.

Positive	Comparative
Mark is not so bright as Lazar	Lazar is brighter than Mark.

Comparison between two things:

Model – 3

·       Comparing two equal things.

·       Sub. + verb + as  – positive adjective – as + obj.

·       Sub + verb + not + Comparative adjective + than + obj.

Positive : Tina is as clever as Navin.

Comparative : Navin is not cleverer than Tina.

(positive degree) Ramesh is as tall as Abhishek.

 (comparative degree) Abhishek is not taller than Ramesh.

(Positive degree) I am as strong as Raju.

(Comparative degree) Raju is not stronger than I/me.

Positive. -- I am as strong as him.

Comparative. -- He is not stronger than me.

Positive	Comparative
Kavya is as clever as Rosy	Rosy is not cleverer than Kavya
Suzan is at least as tall as Jane	Jane is not taller than Suzan

Sam is as strong as Lenin.

Lenin is not less strong than Sam.

Comparison among more than two things:

Model – 4

·       Comparing unequal things.

·       Few + sub. + plural verb + As – positive adjective – as +obj.

·       Sub + verb +  Comparative adjective + than + most other + obj(plural).

Positive : Few cities in India are as big as Chennai.

Comparative : Chennai is bigger than most other cities in India.

(positive degree) Few boys in the class are as clever as Abhishek.

(comparative degree) Abhishek is cleverer than most other boys in the class. 

Positive. -- Few cities in India are as rich as Mumbai.

Comparative. -- Mumbai is richer than most other cities in India.

Positive : Few metals are as costly as gold.

Comparative : Gold is costlier than most other metals.

Positive : Few fruits are as sweet as the mango.

Comparative: Mango is sweeter than most other fruits.

Positive. – Few metals are as useful as iron.

Comparative. – Iron is more useful than most other metals.

(positive degree) Few boys in the class are as tall as Amit.

(Comparative degree) Amit is taller than most other boys in the class.

Positive. – Few democracies in the world are as large as India.

Comparative. – India is larger than most other democracies in the world.

Positive	Comparative
Few historians write as interestingly as Joshi.	Joshi writes more interestingly than most historians.

**************