过去分词用法：
1、过去分词作表语，相当于一个形容词，有“被动”含义。
We were so tired that we fell asleep soon. 我们太累，很快入睡了。
2、过去分词作定语，修饰谁，就和谁是被动关系。
cooked food 被做熟了的食物
3、过去分词作状语，和主语是被动关系。
Seen from the top of the hill, the small city looks wonderful.从小山顶上看去，小城美仑美奂。
4、过去分词作宾补，作谁的补语，就和谁是被动关系。
The vicar has been asked to have the tree cut down.郊区牧师被要求把书砍掉。
拓展资料
规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则：
1、一般动词，在词尾直接加“-ed ”。
2、以不发音的“e”结尾的动词，只在词尾加“d ”。
3、以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“-ed”。
4、重读闭音节结尾，末尾只有一个辅音字母（r、y、x除外），先双写该辅音字母，再加“-ed”。
（资料来源：过去分词——百度百科）
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第1个回答 2018-08-30
过去分词用法：
1、过去分词作表语，相当于一个形容词，有“被动”含义。
We were so tired that we fell asleep soon. 我们太累，很快入睡了。
2、过去分词作定语，修饰谁，就和谁是被动关系。
cooked food 被做熟了的食物
3、过去分词作状语，和主语是被动关系。
Seen from the top of the hill, the small city looks wonderful.从小山顶上看去，小城美仑美奂。
4、过去分词作宾补，作谁的补语，就和谁是被动关系。
The vicar has been asked to have the tree cut down.郊区牧师被要求把书砍掉。

拓展资料
规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则：
1、一般动词，在词尾直接加“-ed ”。
2、以不发音的“e”结尾的动词，只在词尾加“d ”。
3、以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“-ed”。
4、重读闭音节结尾，末尾只有一个辅音字母（r、y、x除外），先双写该辅音字母，再加“-ed”。
1、过去分词作表语，相当于一个形容词，有“被动”含义。
We were so tired that we fell asleep soon. 我们太累，很快入睡了。
2、过去分词作定语，修饰谁，就和谁是被动关系。
cooked food 被做熟了的食物
3、过去分词作状语，和主语是被动关系。
Seen from the top of the hill, the small city looks wonderful.从小山顶上看去，小城美仑美奂。
4、过去分词作宾补，作谁的补语，就和谁是被动关系。
The vicar has been asked to have the tree cut down.郊区牧师被要求把书砍掉。

拓展资料
规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则：
1、一般动词，在词尾直接加“-ed ”。
2、以不发音的“e”结尾的动词，只在词尾加“d ”。
3、以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“-ed”。
4、重读闭音节结尾，末尾只有一个辅音字母（r、y、x除外），先双写该辅音字母，再加“-ed”。
第2个回答 2015-03-08
很简单， 过去分词就是在使用过去完成时的时候用！强调过去的过去完成的动作， 把时间点换了！还有就是现在完成时， 被动语态， 定语后置！
注意要领会， 不能记！ 祝你学有所成！
补充：
）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。
2）过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。
一般过去时的时间状语:
yesterday, last week，…ago, in1980, in October, just now, 具体的时间状语
共同的时间状语:
this morning, tonight,this April, now, once，before, already, recently，lately
现在完成时的时间状语
for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,
不确定的时间状语
3）现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如live, teach, learn, work, study, know.
过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。
举例：
I saw this film yesterday.
（强调看的动作发生过了。）
I have seen this film.
（强调对现在的影响，电影的内容已经知道了。）
Why did you get up so early
（强调起床的动作已发生过了。）
Who hasn't handed in his paper
（强调有卷子，可能为不公平竞争。）
She has returned from Paris.
她已从巴黎回来了。
She returned yesterday.
她是昨天回来了。
He has been in the League for three years.
(在团内的状态可延续)
He has been a League member for three years.
(是团员的状态可持续)
He joined the League three years ago.
( 三年前入团，joined为短暂行为。)
I have finished my homework now.
---Will somebody go and get Dr. White
---He's already been sent for.
句子中如有过去时的时间副词（如 yesterday, last, week, in 1960）时，不能使用现在完成时，要用过去时。
（错）Tom has written a letter to his parents last night.
（对）Tom wrote a letter to his parents last night.
过去完成时
1） 概念：表示过去的过去
----|-------|-----|---->其构成是had +过去分词构成。
那时以前 那时 现在
2） 用法
a. 在told, said, knew, heard, thought等动词后的宾语从句。
She said (that) she had never been to Paris.
b. 状语从句
在过去不同时间发生的两个动作中，发生在先，用过去完成时；发生在后，用一般过去时。
When the police arrived, the thieves had run away.
c. 表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示"原本…，未能…"
We had hoped that you would come, but you didn't.
3) 过去完成时的时间状语before, by, until , when, after, once, as soon as。
He said that he had learned some English before.
By the time he was twelve, Edison had began to make a living by himself.
Tom was disappointed that most of the guests had left when he arrived at the party.
典型例题
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left B，were writing, has left C. had written, had left D. were writing, had left
答案D. "把书忘在办公室"发生在"去取书"这一过去的动作之前，因此"忘了书"这一动作发生在过去的过去，用过去完成时。句中when表示的是时间的一点，表示在"同学们正忙于……"这一背景下，when所引导的动作发生。因此
前一句应用过去进行时。
注意： had no … when 还没等…… 就……
had no sooner… than 刚…… 就……
He had no sooner bought the car than he sold it.本回答被提问者采纳
注意要领会， 不能记！ 祝你学有所成！
补充：
）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。
2）过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。
一般过去时的时间状语:
yesterday, last week，…ago, in1980, in October, just now, 具体的时间状语
共同的时间状语:
this morning, tonight,this April, now, once，before, already, recently，lately
现在完成时的时间状语
for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,
不确定的时间状语
3）现在完成时可表示持续到现在的动作或状态，动词一般是延续性的，如live, teach, learn, work, study, know.
过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。
举例：
I saw this film yesterday.
（强调看的动作发生过了。）
I have seen this film.
（强调对现在的影响，电影的内容已经知道了。）
Why did you get up so early
（强调起床的动作已发生过了。）
Who hasn't handed in his paper
（强调有卷子，可能为不公平竞争。）
She has returned from Paris.
她已从巴黎回来了。
She returned yesterday.
她是昨天回来了。
He has been in the League for three years.
(在团内的状态可延续)
He has been a League member for three years.
(是团员的状态可持续)
He joined the League three years ago.
( 三年前入团，joined为短暂行为。)
I have finished my homework now.
---Will somebody go and get Dr. White
---He's already been sent for.
句子中如有过去时的时间副词（如 yesterday, last, week, in 1960）时，不能使用现在完成时，要用过去时。
（错）Tom has written a letter to his parents last night.
（对）Tom wrote a letter to his parents last night.
过去完成时
1） 概念：表示过去的过去
----|-------|-----|---->其构成是had +过去分词构成。
那时以前 那时 现在
2） 用法
a. 在told, said, knew, heard, thought等动词后的宾语从句。
She said (that) she had never been to Paris.
b. 状语从句
在过去不同时间发生的两个动作中，发生在先，用过去完成时；发生在后，用一般过去时。
When the police arrived, the thieves had run away.
c. 表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示"原本…，未能…"
We had hoped that you would come, but you didn't.
3) 过去完成时的时间状语before, by, until , when, after, once, as soon as。
He said that he had learned some English before.
By the time he was twelve, Edison had began to make a living by himself.
Tom was disappointed that most of the guests had left when he arrived at the party.
典型例题
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left B，were writing, has left C. had written, had left D. were writing, had left
答案D. "把书忘在办公室"发生在"去取书"这一过去的动作之前，因此"忘了书"这一动作发生在过去的过去，用过去完成时。句中when表示的是时间的一点，表示在"同学们正忙于……"这一背景下，when所引导的动作发生。因此
前一句应用过去进行时。
注意： had no … when 还没等…… 就……
had no sooner… than 刚…… 就……
He had no sooner bought the car than he sold it.本回答被提问者采纳
第3个回答 2015-03-08
主要用于完成时态追问
更仔细些
过完？
追答如：he has finished his homework
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