在英语中,形容词作定语时,通常放在它所修饰的名词之前.如：a new American telephone.the famous French Medical College但有时形容词作这定语时需要放在所修饰名词的后面,即形容词后置.形容词后置常见的有以下几种情况：1.当something,someone,somebody,anything,nothing等不定代词由形容词修饰时,形容词一般要后置.如：Boy and girls,I have something imporant to tell you.Don't worry,there is nothing serious.但也有不后置的情况,多是起强调、衬托等作用.如：And there,glowing with a faint blue light in the glass test-tubes in the tables,was the mysterious something which they had woked so hard to find:Radium.这里一是为了强调mysterious,说明镭存在的神秘.二是带有一个同样起强调作用的定语从句修饰something,把其同位语Radium置于特意烘托的句尾,更显得它的发现来之不易.2.当形容词修饰数词和表示量度的名词时,形容词常后置.如：He found a good place in the rocks,more than twelves feet high.The river is half a mile wide.3.当名词前有限制性较强的only,all,every或形容词的最高级修饰时,形容词常后置.如：This is the best way possible.Mr Smith is the only person able to do it.4.当两个以上并列形容词作这定语时,也常后置.如：He is writer both witty and wise.A man poor but contented enjoys life.5.以字母"a"开头的形容词,多数情况下用作表语.在作定语时要后置.