过去式与过去分词的用法与区别

过去式：用于一般过去时，做谓语。
例：She went to school yesterday.
过去分词：
1). 用于完成时，与have和had分别构成现在完成（进行 时和过去完成（进行）时，做谓语。
例：She has gone to school.
2). 与be构成被动语态。
例：He is beaten by his father.
3). 非谓语动词之一，表示被动，完成的意思，可作定语，表语，补语和状语。
例：The boy beaten by his father is my friend.