形容词一般用来做定语。我们常见的形容词的位置是放在它所修饰的词前面，但实际并非完全如此。现在讲述一下什么情况下形容词需要放在它所修饰的词后面作定语。
形容词作定语修饰名词时要放在名词的前面。比如：a beautiful girl漂亮女孩；a happy family幸福家庭；a new car一辆新汽车。
They are good students.它们都是好学生。Look at the blue sky.看这蓝天。My elder brother is a young teacher.我的哥哥是年轻的老师。
在下面这两种情况下，形容词需后置，需要牢记，它频繁出现在各种试卷中的完形填空、选项题中，也是测试形容词掌握情况的重要考点。
1.当形容词作定语修饰不定代词，如，something、anything、nothing、anybody和everything时，形容词要放在它所修饰的这些词后面，也就是做后置定语。比如：
There's something funny about him.他有点儿怪。Take something blue. It's for luck.
挑件蓝色的东西吧，求个吉利。There's something strange about him.他有点怪。
I overreact to anything sad.我对任何悲伤的事情都反应过激。Nobody seemed to notice anything wrong.似乎没人注意到有什么问题。Is there anything good on TV? 电视上有好的节目吗？
This man has done nothing wrong.这位男子没有做过不正当的事。Luckily, nothing valuable was stolen.幸运的是，没有贵重物品失窃。There was nothing remarkable about him.他没有什么非凡之处。These ideas are nothing new.这些想法并不新鲜。
We should do everything possible to help him. 我们应该尽一切可能帮助他。He doesn't bloody care about anybody else.他根本不关心别人。He always was a miserable man. He never spoke to me nor anybody else, not even to pass the time of day.他总是不友好。他从不和我说话，也不和别人说话，哪怕是为了打发时光。
2.形容词跟带有量度的词或词组连用时，通常形容词要后置，即，放在数词或者数量词之后。比如：
The river is 500 feet wide.这条河五百英尺宽。The main street is five kilometres long. 这座摩天大楼有三百米高吗？Is the skyscraper 300 meters high? 这个湖有一百米深，可以走大船。The lake is 100 metres deep, and large boats are accessible.
