不定式用作定语时,通常皆置于其所修饰的名词或代词之后.它与所修饰的名词或代词可能是主谓关系.如；
All dead. I was the only to grow up .
也可能是动宾关系,这时不定式即通常所谓的反射不定式.如；
It was a game to remember.
而过去分词用于定语时,多表示已完成的动作.
过去分词短语用作定语时,一般皆置于其所修饰的名词之后,其意义相当于一个定语从句,但较从句简洁,多用于笔语中.如；
There were twenty or thirty monkeys huddled along the branches as still as atatues.