比较级前用个be,比较级后用个"比"(than)。原级变成比较级,er结尾要牢记；一般情况直接加,单辅重闭双写加；辅音加y变i加,以e结尾去e加；少数部分双音节,规则如同单音词。其余双音多音节,词前加more就可以；不规则词没几个,它们需要特殊记。
比较级前面的修饰
1）a bit,a little,rather,much,far,by far,many,a lot,lots,a great deal,any,still,even等
2）还可以用表示倍数的词或度量名词作修饰语.
3）以上词（除by far）外,必须置于比较级形容词或副词的前面.many,old 和far
1）如果后接名词时,much more 不可数名词
many more 可数名词复数
2）old 有两种比较级和最高级形式：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 有两种比较级,farther,further.在英语中两者都可指距离.在美语中,father 表示距离,further表示进一步.
I have nothing further to say.
the 最高级 比较范围
1）The Sahara is the biggest desert in the world.
形容词最高级前通常必须用定冠词 the,副词最高级前可不用.
形容词most前面没有the,不表示最高级的含义,只表示“非常”.It is a most important problem.
=It is a very important problem.
注意：使用最高级要注意将主语包括在比较范围内.
（错）Tom is the tallest of his three brothers.
（对）Tom is the tallest of the three brothers.
2）下列词可修饰最高级,by far,far,much,mostly,almost
This hat is nearly / almost the biggest.注意：
a.very可修饰最高级,但位置与much不同.
This is the very best.
This is much the best.
b.序数词通常只修饰最高级.
Africa is the second largest continent.
3）句型转换：
Mike is the most intelligent in his class.
Mike is more intelligent than any other students in his class.
4）“否定词语 比较级”,“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.
什么词能修饰比较级
比较级前可用a bit, a little, rather, some(肯定句及请求或建议的问句中),
any(否定句或疑问句中)表示“稍稍，一点”;
用much, far, a great/good deal, a lot, lots, a good bit等表示“……得多”;
用still(只用于肯定句), even, yet等表示“更加”。
如：
Can you move a little farther?你可以站稍远一点吗?
Do you feel any better today?你今天觉得好一点了吗?
Let’s go by car. It’s much cheaper. 咱们开车去。这样便宜得多。
There are far more people than we expected. 人比我们预计的多得多。
He is fat，but his brother is still fatter. 他很胖，但他哥哥更胖。
注：
在作定语的比较级形容词前一般只用far或much。如：
That was a much/far easier job. 这是件容易得多的工作。
在修饰或代替复数可数名词的more前不可用much，而要用many。如：
I’ve made many more mistakes than you have.我出的错比你多得多。
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