It is a grammatical text which explains how should we use comparatives & superlatives. Also it explain where we can use them in different situations.
1. To talk about people or things that are different in some way we use :
A. Comparatives forms of adjectives/adverbs + than.
Ex: I think listing is more difficult than reading.
NOTE: For small differences use: a bit, a little, slightly
Ex: You need to work a little harder.
NOTE: For big differences use: much, a lot, far, significantly
Ex: My new car’s much faster than my old one.
B. Superlative forms of adjectives / adverbs :
Ex: That’s the nicest thing you’ve said to me all day.
NOTE: To emphasize the differences between one person or thing prom all the others we can use by far.
Ex: This is by far the best book I’ve ever read.
C. Less … than and the least.
Ex: Rugby is less popular than football here.
Ex: That’s my least favorite track on the album.
2. As … as
A. For people or things that are the same in some way
we use as + adjective / adverb + as
Ex: She’s as intelligent as her sister.
NOTE: To qualify the comparisons use : almost. Nearly, just, twice, three times, etc
Ex: There were nearly twice as many people at the party as last year.
B. So can replace the first as in negative sentences
Ex: It’s not so difficult as I thought it would be.
NOTE: To qualify negative sentences of this type use : quite, nearly
Ex: Her new film isn’t nearly as bad as her last one.
( = her new film is much better than her last one )
Ex: He’s not quite so impatient as his brother.
( = he’s a little more patient than his brother )
C. The same + noun + as
Ex: My mum’s the same age as my dad.
3. The + comparative, the + comparative
NOTE: We use this structure for things which occur together.
Ex: The more money I have, the faster I spend it.