大师作文网have+过去分词 和 had +过去分词 有什么区别
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/11 08:53:57
have+过去分词 和 had +过去分词 有什么区别
have加过去分词表示的时态是现在完成时,也就是说某一时间段的事情现在已完成.常见的时间词有：for two year,...already,yet,since.
例句：我已经做完作业了.I have finished my homework.她已经去北京了.She has gone to Peking.他当老师两年了.He has been a teacher for two years.
had加过去分词表示的时态是过去完成时,也就是说过去的某件事在过去的时间里完成了,即过去的过去.常见的时间有：by,at,before...
例句：By 11:00 last night,she had got 20,000 yuan.在昨晚11点时,她已收到两万元.
例句：我已经做完作业了.I have finished my homework.她已经去北京了.She has gone to Peking.他当老师两年了.He has been a teacher for two years.
had加过去分词表示的时态是过去完成时,也就是说过去的某件事在过去的时间里完成了,即过去的过去.常见的时间有：by,at,before...
例句：By 11:00 last night,she had got 20,000 yuan.在昨晚11点时,她已收到两万元.