过去分词作定语，状语以及表语用法过去分词是非谓语动词的一种形式,表示完成和被动的动作。

它在句子中可以充当状语、定语等成分。

过去分词与现在分词作状语过去分词表完成、被动, 与主句主语之间是被动关系;现在分词表进行, 主动, 与主句主语之间是主动关系。

如果一个被动的动作发生在谓语动词之前, 则可使用现在分词的完成被动式或过去分词。

过去分词表完成、被动, 作状语时, 其逻辑主语是主句的主语, 且与主语之间存在着被动关系。

过去分词作状语可表时间, 原因, 让步, 结果, 方式, 条件等。

观察下列的句子:Once published, his works (=Once his works was published, ) became famous for the absence of rhyme at the end of each line.PP作时间状语, 相当于一个时间状语从句有时过去分词前可加连词when或while来强调时间概念。

过去分词作时间状语相当于时间状语从句，有时为了突出时间，可在分词前加when或while。

1. When it is heated, ice will be changed into water.When heated, ice will be changed into water.2. When it is seen under a microscope, a fresh snowflake has a delicate six-pointed.Seen under a microscope, a fresh snowflake has a delicate six-pointed shape.过去分词作原因状语相当于表示原因的状语从句。

1. Since/ As she was given advice by the famous detective, the young lady was no longer afraid.Given advice by the famous detective, the young lady was no longer afraid.2. Because it was done in a hurry, his homework was full of mistakes.Done in a hurry, his homework was full of mistakes.过去分词作条件或者假设状语前面可带if，unless等从属连词，相当于条件状语从句。

1.If they had been given more attention, the cabbages could have grown better.Given more attention, the cabbages could have grown better.2. If I am compared with you, we still have a long way to go.Compared with you, we still have a long way to go.作方式或伴随情况状语没有相当的状语从句可以代替。

1.The hunter left his house, followed by his dog.The hunter left his house, and he was followed by his dog.2. She sat by the window, lost in thought.She sat by the window, and she was lost in thought.lost 表示一种迷失心理状态Summary1) 过去分词在句子中可以作时间状语、原因状语、伴随状语、条件状语和让步状语等。

2) 过去分词作状语时,过去分词的逻辑主语与句子主语一致。

过去分词作状语:过去分词有两大特点：1. 表示被动的动作；2. 表示已经完成的动作, 因此, 当过去分词作状语的时候一定要搞清楚分词与主语的逻辑关系－－1. Asked what had happened, he told us about it.→When he was asked what had happened, he told us about it.2. Well known for his expert advice, he received many invitations to give lectures.→Because he was well known for his expert advice, he received many invitations to give lectures.4. Given more time, we would be able to do the work much better.→If we were given more time, we would be able to do the work much better.5. Once translated into Chinese, the book became very popular among Chinese teenagers.→Once it was translated into Chinese, the book became very popular among Chinese teenagers.6. Deeply interested in medicine, she decided to become a doctor.→Because she was deeply interested in medicine, she decided to become a doctor.7. Left alone at home, Sam did not feel afraid at all.→Although he was left alone at home，Sam did not feel afraid at all.用过去分词作状语来改写句子。

1.As I was worried about the journey,I was unsettled for the first few days.→___________________, I was unsettled for the first few days.(Worried about the journey)2.If he is given time, he’ll make a first-class tennis player.→__________, he’ll make a first-class tennis player.(Given time)3) As I was confused by the new surroundings, I was hit by the lack of fresh air.→______________________________, I was hit by the lack of fresh air.(Confused by the new surroundings)4) When he was questioned by the police about the fire, he became tense.→__________________________ ______, he became tense.(Questioned by the police about the fire)1. As I was worried about the journey, I was unsettled for the first few days.Worried about the journey, I was unsettled for the first few days.2. While I was confused by the new surroundings, I was hit by the lack of fresh air.Confused by the new surrounding, I was hit by the lack of fresh air.3. As I was exhausted, I slid into bed and fell fast asleep.Exhausted, I slid into bed and fell fast asleep.Compare1. Following the old man, we went upstairs.—we followed (跟着那个老人, 我们上去了)2. Followed by the old man, we went upstairs. (we were) (被那个老人跟着, 我们上去了)3. 从上面看, 体育场好像一个鸟巢。

____ from the top, the stadium looks like a bird nest. A. Seeing B. Seen4. 从太空看, 宇航员看不到长城。

____ from the space, the astronaut can not discover the Great Wall. A. Seeing B. SeenDifference between the Present Participle and the Past Participle_____for a long time, the book looks old.由于用了很长时间，这本书看上去很旧。

(Used)______ the book, I find it useful. 在使用的过程中，我发现这本书很有用。

(Using)________ at her, he jumped with joy. Looking_______ at by her, he jumped with joy.Looked选择现在分词还是过去分词，关键看主句的主语。

如分词的动作是主句的主语发出，分词就选用现在分词，反之就用过去分词。

Complete each sentence using the Past Participle of the right verb.frighten trap follow shoot1) _________ by noises in the night, the girl no longer dare to sleep in her room.Frightened2) The lady returned home, ________ by two policemen.followed3) If _______ in a burning building, you should send for help.trapped4) Although ____in the leg, he continued firing at the police.shot过去分词作定语过去分词作定语与其所修饰的词之间存在着逻辑上的被动关系,且表示该动作已经完成。