Comparisons
The Degrees of Comparison in English grammar are made with the Adjective and Adverb words to show how big or small, high or low, more or less, many or few, etc., of the qualities, numbers and positions of the nouns (persons, things and places) in comparison to the others mentioned in the other part of a sentence or expression.
Kinds of comparison:
1. POSITIVE DEGREE: Tom is tall a boy.
In this sentence the word ‘tall’ is an adjective telling us how Tom is. There is no other person or thing in this sentence used to compare Tom with, but it is the general way of saying about persons, animals and things that they have some quality (here ‘tallness’) above average in general sense. The adjective word ‘tall’ is said to be in the “positive form”.
This comparison is called “positive degree” comparison.
There are two more comparisons with the ‘positive form’ of the adjective words. They are:
(i) Degree of Equality: This comparison is used to compare two persons, animals or things to tell us that they are equal – having the same quality.
There are two cats with the same height and weight, and look the same except for the colour.
Therefore we say:
The brown cat is as beautiful as the grey cat. (= Both the cats are the same.)
The word “beautiful” is an adjective in the ‘positive form’, and with the conjunction as…as it expresses the ‘degree of equality’.
(ii) Degree of Inequality: This comparison is used to compare two persons, animals or things to tell us that they are not equal – not having the same quality.
The brown cat is not so beautiful as the black & white cat. (= They arenot the same.)
The word “beautiful” is an adjective in the ‘positive form’, and with the conjunction so…as (and the negative ‘not’) it expresses the ‘degree ofinequality’
2. COMPARATIVE DEGREE:
Tom is a tall boy. Tom is taller than his sister.
In the second sentence the word ‘taller’ is an adjective used to compare the ‘tallness’ of these two persons – Tom and his sister – and to tell us that Tom has more of the quality of ‘tallness’.
Therefore, an adjective word which shows the difference of quality betweentwotwo groups of persons, animals or things is said to be in the ‘comparative form’. persons, animals or things, or
This comparison is called “Comparative Degree”.
There are two more degrees of comparison with the ‘comparative form’ of an adjective. They are:
(i) Parallel Degree: This comparison is used to show that the qualities of two items (adjectives or adverbs) talked about in the given sentence go parallel, i.e. if one quality (adjective or adverb) increases, the other quality (adjective or adverb) increases, and if one quality decreases, the other quality also decreases.
The bigger the box, the heavier it is.
(ii) Progressive Degree: This comparison is used to show that the quality of a thing (adjective or adverb) talked about in the given sentence increases as the time passes, for example:
MON TUE WED THU FRI SAT SUN
25° → 27° → 30° → 33°→ 35° → 38° → 40°
It’s getting hotter and hotter day by day. [as the time passes the temperature increases] OR The days are getting hotter and hotter.
3. SUPERLATIVE DEGREE:
A musk ox is a large animal. An elephant is larger than a musk ox.
The blue whale is the largest of all animals.
The blue whale is the largest of all animals in the world.
In this sentence the word (the) ‘largest’ is an adjective used to compare the “largeness” of the blue whale and to tell us that the blue whale has the most quality of ‘largeness’.
This comparison is used to compare one person, animal or thing with more than two persons, animals or things (the rest of the group of more than two), and to say that the particular one has the highest degree of that particular quality (here the comparison is between the blue whale and the rest of the animals, more than two). The adjective ‘large’ is said to be in the ‘superlative form’.
This comparison is called “Superlative Degree”.
source: http://www.weblearneng.com/the-degrees-of-comparison
