英语语法知识have(has)+动词的过去分词与had+动词的过去分词的区别?并举两个列子来说明!

前者是过去完成时,发生在过去的过去,在句子中有明显的事件发生的先后顺序.后者是现在完成时,发生于现在的过去,并对现在存有一定的影响.我想这个你是明白滴.
然后,例句.
She didn’t go to bed until she had finished her work.　　她直到把工作做完之后才睡觉.
go to bed是过去的,而finished her work是发生在之前的,所以用过去完成时.
I have spent all of my money.(现在我没有钱花了.) 这用的就是现在完成时

have/has动词的过去分词是现在完成时，多与for+时间段或since+时间点连用
eg。I have lived here for there months.
had+动词的过去分词是过去完成时。
eg.I had learnt 1000 volcabularies by the last term.
具体用法还应参考语态的语法知识

have (has)+动词的过去分词j是指过去做某事到现在还在做，没有完成。如：Scientists have made a breakthrough in their treatment of that disease.在治疗那种疾病方面科学家已有了突破。
had+动词的过去分词是指