额··貌似高中老师说得很清楚额~现在也记得不太清楚了...好像是动词不定式做后置定语,一般表示与主句时态一致的一个经常发生的动作,而过去分词作后置定语,一般表示被动语态.具体说来说,动词不定式作定语后置表示要做的事（尚未发生）,常与名词有动宾关系,不及物动词加介词.现在分词作定语后置表示名词性质、特征或表示名词所做的动作（多表示进行、主动）.不定式作定语时的特殊情况：1.表示将要发生的动作,有时根据句意需要加上介词,这时介词不能省略,因为被修饰的名词是它的宾语.e.g.The farmers thought of ways to protect their crops.We have only a small cold room to live in.2.用于修饰被序数词、最高级或no,all,any等限定的中心词.e.g.Marie Curie became the first woman in France to be a university professor.She was the first person in the word to receive two Nobel Prize.He was the best man to do the job.3.根据不同的句意,不定式可用主动语态或被动语态.e.g.Have you got anything to post?(post的动作执行者是“你”) Have you got anything to be posted?(post的动作执行者是“我”或“别人”) There are some plates to wash (to be washed).
