可修饰比较级的词
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.