My pen is better than yours.
The weather of Harbin is colder than that of Beijing.
比较级中的被比对象与比较对象必须属于互不分离的两个范围。比较的对象如在同一范围内。必须加other一词，将比较的个体排除在外。范围内加any other 范围外加any.
He is taller than any other boy in his class.
Canada is larger than any country in Asia.
常用来修饰比较级的词有：much ,a little , a bit ,a lot ,even ,still ,a great deal of, far ,by far ,any ,rather
及表示倍数的词。修饰可数名词用：many more或few.修饰不可数名词用：much more .
There are many more books in your library than in ours.
His handwriting is much better than mine.
The book is more interesting than that one (is interesting).
She is much taller than she was last year.
I think he will be more careful with his study than he is now.
表示“两者中比较……的一个”，要用( the + 比较级 + of the two)的句式.
He is the stronger of the two boys.
English is the easier language of the two.
1 )be + 倍数 + as …as
2 )be + 倍数 + 比较级 +than
3 )be + 倍数 + the +名词(尺寸，长度)+of
The house is three times as big as that one .
The house is three times bigger than that one .
The pencil is twice the length of that one
7．比较级 + and + 比较级 → 越来越……
Days are getting longer and longer.
8．the + 比较级 ，the + 比较级 → 越……，越……
The more ,the better.
The more you eat, the fatter you’ll be.
9．the + 序数词 + 最高级 + …
Which is the first most useful invention ?
10．one of + 最高级+ 名次复数
He is one of the tallest boys in his class.
He is my best friend.
farFarther / furtherFarthest / furthest
Many / muchmoremost
Good / wellbetterBest
oldOlder / elderOldest / eldest
Bad / badly / illWorseWorst
importantMore importantMost important多音节形容词和副词
Tired / slowly / loudly / clearly /careful / surprised / funnyMore ~ , most ~