一、规则形式

1. go → went → gone

2. eat → ate → eaten

3. sleep → slept → slept

4. write → wrote → written

规则形式过去分词的用法：

1. 构成完成时态：过去分词与助动词have（has/had）结合，构成现在完成时、过去完成时和将来完成时。例如：

– I have eaten breakfast.（我已经吃了早餐。）

– He had finished his homework before the teacher came.（老师来之前他已经完成了作业。）

– They will have finished the project by the end of next month.（他们将在下月底前完成项目。）

2. 构成被动语态：过去分词与助动词be（am/is/are/was/were/will be）结合，构成被动语态。例如：

– The book was written by the famous author.（这本书是由那位著名作者写的。）

– The window has been painted white.（窗户已经被漆成白色了。）

二、不规则形式

1. be → been

2. do → done

3. have → had

4. see → seen

5. go → gone

6. come → come（此处过去式和过去分词相同）

7. put → put

8. take → taken

9. get → got

10. know → known

不规则形式过去分词的用法：

1. 构成完成时态：与规则形式相同，不规则过去分词与助动词have（has/had）结合，构成现在完成时、过去完成时和将来完成时。例如：

– She has been to the Great Wall.（她去过长城。）

– They had finished their work before the deadline.（他们在截止日期前完成了工作。）

– They will have met each other by next week.（他们将在下周之前见过面。）

2. 构成被动语态：与规则形式相同，不规则过去分词与助动词be（am/is/are/was/were/will be）结合，构成被动语态。例如：

– The cake was made by the girl.（蛋糕是由那个女孩做的。）

– The letter has been sent to the post office.（信已经被送到邮局了。）

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过去分词在英文中有着广泛的应用，分为规则形式和不规则形式。规则形式过去分词由动词的过去式加上-ed构成，不规则形式过去分词没有固定构成规则，需要单独记忆。两者在构成完成时态和被动语态时用法相同，但需要注意不规则形式过去分词的特殊性。