as + 形容词或副词原级 + as
He cannot run so/as fast as you.
2）当as… as 中间有名词时采用格式。
as +形容词+ a +单数名词
as + many/much +名词
This is as good an example as the other is.
I can carry as much paper as you can……
This room is twice as big as that one.
Your room is the same size as mine.
4）倍数+ as + adj. + as <=> 倍数+ then + of
This bridge is three times as long as that one.
This bridge is three times the length of that one.
Your room is twice as large as mine.
Your room is twice the size of mine.
级形容词或副词 + than
You are taller than I.
They lights in your room are as bright as those in mine.
（错）He is more cleverer than his brother.
（对）He is more clever than his brother.
（对）He is clever than his brother.
（错）China is larger that any country in Asia.
（对）China is larger than any other countries in Asia.
The population of Shanghai is larger than that of Beijing.
It is easier to make a plan than to carry it out.
Which is large，Canada or Australia？
Which is the larger country，Canada or Australia？
She is taller than her two sisters.
She is the taller of the two sisters.
1）a bit，a little，rather，much，far，by far，many，a lot，lots，a gre
1）后接名词时，much more +不可数名词
many more +可数名词复数
2）old 有两种级和最高级：older/oldest 和elder/eldest. elder，eldest 只用于兄弟姐妹的长幼关系。
My elder brother is an engineer.
Mary is the eldest of the three sisters.
3）far 有两种级，farther，further. 在英语
I have nothing further to say.
the + 最高级 + 范围
1）The Sahara is the biggest desert in the world.
It is a most important problem.
=It is a very important problem.
（错）Tom is the tallest of his three brothers.
（对）Tom is the tallest of the three brothers.
This hat is nearly / almost the biggest.
This is the very best.
This is much the best.
Africa is the second largest continent.
Mike is the most intelligent in his class.
Mike is more intelligent than any other students in his class.
4）“否定词语+级”，“否定词语+ so… as”结构表示最高级含义。
Nothing is so easy as this.
=Nothing is easier than this.
=This is the easiest thing.
1）— Are you feeling ____？
— Yes，I’m fine now.
A. any well B. any better
C. quite good D. quite better
2）The experiment was____ easier than we had expected.
A.more B.much more
C.much D.more much
3）If there were no examinations，we should have ___ at school.
A. the happiest timeB. a more happier time
C. much happiest time D.a much happier time