形容词adjunctive, 缩写是adj., 修饰名词,说明事物或人的性质或特征。通常,可将形容词分成性质形容词和叙述形容词两类,其位置不一定都放在名词前面。
1) 直接说明事物的性质或特征的形容词是性质形容词,它有级的变化,可以用程度副词修饰,在句中可作定语、表语和补语。例如:hot 热的,cold冷的,easy容易的
i. 作定语:
This is an interesting story. Kitty is a clever cat. 
ii. 作表语:
Yao Ming is very tall. Our classroom is big and bright.
iii. 作宾语补足语:
Don't make your hands dirty. We're trying to make our school beautiful.
2) 叙述形容词只能作表语,所以又称为表语形容词。这类形容词没有级的变化,也不可用程度副词修饰。大多数以a开头的形容词都属于这一类。
例如:afraid, well, unwell, ill, faint, afraid, alike, alive, alone, asleep, awake 等。
(错) He is an ill man.
(对) The man is ill.
(错) She is an afraid girl.
(对) The girl is afraid.
3)形容词作定语修饰名词时,要放在名词的前边。但是如果形容词修饰以-thing为字尾的词语时,要放在这些词之后,例如:something nice, nothing wrong
There is something wrong with my DVD machine. It's nothing serious.
4)某些形容词可以和定冠词连用,表示一类人或事物,其作用相当于一个名词。
例如: the young年轻人,the poor穷人,the rich富人
The rich get richer and the poor get poorer sometimes evoked.
5)如果有两个以上的形容词修饰同一个名词时,其前后排列顺序一般如下:
限定词(a/the, this/some/her……)+数量词(先序数词后基数词)+观点+大小+形状+新旧+颜色+产地+材料+名词。例如:a big old German computer
可总结为:限定描绘大长高, 形状年龄和新老; 颜色国籍跟材料, 作用类别往后靠。
One day they crossed the old Chinese stone bridge behind the palace.