参考资料：
1. 《英语语法新思维初级教程》
▶ 知识点
▼ 形容词可放在名词的前面或后面，构成前置修饰或后置修饰。
▼ 前置定语通常句型：“限定词 + 形容词 + 名词”。当修饰something，anything，somebody/someone，no body/no one等不定代词时形容词要后置。
my best friend
a typical mistake
the popular songs
▼ 多个形容词修饰名词时的顺序。规则：观点形容词（opinion adjective） + 描绘形容词（descriptive adjective）。
名词前的修饰语顺序：限定词 + 观点形容词 + 尺寸大小 + 形状 + 新旧 + 颜色 + 国籍、出处或产地 + 质地材料 + 中心名。
▼ 单个形容词作定语，一般置于被修饰名词前。但形容词短语作定语，一般只能置于被修饰名词后，即充当后置定语。
the popular mistake
a mistake typical of beginners of English
the popular song
the song popular in the 1970s
“形容词 + 介词短语”构成形容词短语
a jacket similar to yours
a nation as large as California
“形容词 + 不定式短语”构成非谓语动词短语（形容词短语）
parents eager to support their children's efforts
Students brave enough to attempt the course deserve to succeed
“形容词 + 动名词短语”构成形容词短语
a waiter busy serving the guests
that引起的定语从句
将单个形容词提到名词前，把形容词的补足语留在名词后的用法
a man taller than John
a taller man than John
▼ 多个形容词并列构成的形容词短语
a set of furniture, simple and beautiful
All countries, large or small, should be equal
▼ 形容词比较级不能省略the的情况
I think this painting is the more interesting of the two.
▼ 形容词最高级的用法
the + 最高级 + in + 地方 / the + 序数词 + 最高级 + in + 地方
It is the most expensive car in the world. // 不能用of
The most beautiful sound in the world.
the third longest river in the world.
the second longest rive in China.
the + 形容词/副词的最高级 + of + 所属范围
the most intelligent of birds.
The youngest of the family.
// 将“of + 范围”这一短语放置在句首
Of all metals, gold is the least useful.
Of all forms of energy, electricity is most widely used.
▼ 最高级前面的定冠词the
1. 形容词的最高级修饰名词用在名词之前，一般要加the。
This is the most interesting book of all.
2. most有时用在形容词前，并非最高级，而是表示“非常，很”的意思，相当于very，very much。此时，在most前一般不加定冠词the。
The story is most interesting.
It is a most difficult problem.