Unit3_Life_In_The_Future语法

1、Unit 3 Life in the futureGrammar过去分词过去分词 过去分词是非谓语动词的一种过去分词是非谓语动词的一种形式形式, ,表示完成和被动的动作。它表示完成和被动的动作。它在句子中可以充当状语、定语等成在句子中可以充当状语、定语等成分。分。过去分词与现在分词作状语过去分词与现在分词作状语 过去分词表完成过去分词表完成、被动被动,与主句主语与主句主语之间是被动关系之间是被动关系;现在分词表进行现在分词表进行,主动主动,与与主句主语之间是主动关系。如果一个被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动的动作发生在谓语动词之前,则可使用则可使用现在分词的完成

2、被动式或过去分词。现在分词的完成被动式或过去分词。 过去分词表完成、被动过去分词表完成、被动, 作状语时作状语时,其逻辑主语是主句的主语其逻辑主语是主句的主语, 且与主语之且与主语之间存在着被动关系。过去分词作状语间存在着被动关系。过去分词作状语可表时间可表时间, 原因原因, 让步让步, 结果结果, 方式方式, 条件条件等。等。观察下列的句子观察下列的句子:Once published, his works (=Once his works was published, ) became famous for the absence of rhyme at the end of each li

3、ne. PPPP作时间状语作时间状语,相当于一个时间状语从相当于一个时间状语从句有时过去分词前可加连词句有时过去分词前可加连词when或或while来强调时间概念。来强调时间概念。过去分词作时间状语过去分词作时间状语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 unde

4、r a microscope, a fresh snowflake has a delicate six-pointed shape. 过去分词作原因状语过去分词作原因状语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 homew

5、ork 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过去分词作条件或者假设状语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.

6、 Compared with you, we still have a long way to go.作方式或作方式或伴随伴随情况状语情况状语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表示一种迷失心理状态1)

7、过去分词在句子中可以作时间状语、过去分词在句子中可以作时间状语、原因状语、伴随状语、条件状语和原因状语、伴随状语、条件状语和让步状语等。让步状语等。2) 过去分词作状语时过去分词作状语时, ,过去分词的逻辑过去分词的逻辑主语与句子主语一致。主语与句子主语一致。Summary过去分词作状语过去分词作状语:过去分词有两大特点：过去分词有两大特点：1. 表示被动的动作；表示被动的动作；2. 表示已经完成的动作表示已经完成的动作, 因此因此,当过去分词当过去分词作状语的时候一定要搞清楚分词与主语作状语的时候一定要搞清楚分词与主语的逻辑关系被动的逻辑关系被动, 例如例如:Rewrite with pro

8、per conjunctions1. United we stand, divided we fail. If we are united, we will stand, but if we are divided, we will fail.Example: 2. Asked what had happened, he told us about it. When he was asked what had happened, he told us about it.3. Well known for his expert advice, he received many invitatio

9、ns 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 becam

10、e 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

11、 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。用过去分词作状语来改写句子。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 journey2. If he is given time, hell make

12、 a first-class tennis player. _ , hell make a first-class tennis player.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.Given timeConfused by the new surroundings4) When he was questioned by the police about the fire, he became

13、tense. _ _ _, he became tense. Questioned by the police about the fireFind out the sentences with same meaning.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 surroundi

14、ngs, 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.1. Following the old man, we went upstairs.we followed (跟跟着那个老人着那个老人, 我们上去了我们上去了)2

15、. Followed by the old man, we went upstairs. (we were) (被被那个老人跟着那个老人跟着, 我们上去了我们上去了)Compare3. 从上面看从上面看,体育场好像一个鸟巢。体育场好像一个鸟巢。 _ from the top, the stadium looks like a bird nest. A. Seeing B. Seen4. 从太空看从太空看, 宇航员看不到长城。宇航员看不到长城。 _ from the space, the astronaut can not discover the Great Wall. A. Seeing B

16、. 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，这本书看上去很旧由于用了很长时间，这本书看上去很旧._ the book, I find it useful. 在使用的过程中，我发现这本书很有用在使用的过程中，我发现这本书很有用. _ at her, he jumped with joy._at by her, he jumped with joy.UsedUsingLookingLooked注意：选择现在分词

17、还是过去分词，注意：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，分词就选用现在分主句的主语发出，分词就选用现在分词，反之就用过去分词。词，反之就用过去分词。Complete each sentence using the Past Participle of the right verb. 1) _ by noises in the night, the girl no longer dare to sleep in her room.2) The lady returned home, _ by two policemen.fri

18、ghten trap follow shootFrightenedfollowed3) If _ in a burning building, you should send for help.4) Although _in the leg, he continued firing at the police.trapped shot过去分词作定语过去分词作定语 过去分词作定语与其所修饰的词之间存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在着逻辑上的被动关系,且表示该动作已经且表示该动作已经完成。单个的过去分词作定语完成。单个的过去分词作定语,通常置于被通常置于被修饰的词的前面修饰

19、的词的前面,而分词短语作定语而分词短语作定语,则须置则须置于被修饰词的后面。于被修饰词的后面。Attention1. Last Sunday we went on an organized trip to the forest. 上星期我们组织了一次去森林的旅行。上星期我们组织了一次去森林的旅行。2. A letter posted today will reach him the day after tomorrow. 今天发出的信后天就能收到。今天发出的信后天就能收到。分词作分词作定语定语可以转换成定语从句可以转换成定语从句:He worked as a worker building r

20、oads. (主动主动) =He worked as a worker who/ that built roads. This is a picture painted by my father. (被动被动) =This is a picture which was painted by my father.I know the young man sleeping on the bench. (在进行在进行) ) =I know the young man who is sleeping on the bench.The letter mailed last night will reac

21、h him tomorrow. ( (已完成已完成) ) =The letter which was mailed last night will reach him tomorrow.过去分词短语有时亦可用作非限制性定过去分词短语有时亦可用作非限制性定语，前后常有逗号。语，前后常有逗号。 Some of them, born and brought up in country villages, had never seen a train. 他们当中有一些人他们当中有一些人, 生长在农村，从未见过生长在农村，从未见过火车。火车。 过去分词作定语有前置和后置两种情况过去分词作定语有前置和后置

22、两种情况: 单个的过去分词作定语单个的过去分词作定语, 通常放在被通常放在被修饰的名词之前修饰的名词之前, 表示被动和完成意表示被动和完成意义。义。1.前置定语被动意义：被动意义：an honored guest 一位受尊敬的客人一位受尊敬的客人 (受伤的工人受伤的工人)are now being taken good care of in the hospital.B.完成意义完成意义a retired teacher 一位退休的教师一位退休的教师They are cleaning (落落叶叶) in the yard.The injured workersthe fallen leaves

23、2.后置定语后置定语 过去分词短语作定语时过去分词短语作定语时, 通常放在被通常放在被修饰的名词之后修饰的名词之后, 它的作用相当于一个它的作用相当于一个定语从句。定语从句。This will be the best novel of its kind ever written.=Who were the so-called guests invited (= ) to your part last night?that has ever been writtenwho had been invited 如果被修饰的词是由如果被修饰的词是由every/some/any/no + thing/b

24、ody/one所构成的复合代词或指所构成的复合代词或指示代词示代词those等时，即使一个单一的分词等时，即使一个单一的分词作形容词用，也要放在被修饰词的后面。作形容词用，也要放在被修饰词的后面。 例如：例如： Is there anything unsolved? There is noting changed here since I left this town. 注意注意: : 1. The Olympic Games, _ in 776 B. C., didnt include women until 1912. A. first playing B. to be first pla

25、yed C. first played D. to be playing考点点拨考点点拨简析简析: 首先首先,根据语法分析可知根据语法分析可知,待选部待选部分是一个作定语、修饰分是一个作定语、修饰 The Olympic Games的后置分词短语的后置分词短语;再根据再根据 The Olympic Games 对于动词对于动词 play 来说来说只能是被动承受只能是被动承受,且已完成且已完成 (in 776 B. C.)。因此。因此,该题应选该题应选C。2. Whats the language _ in Germany? A. speaking B. spoken C. be spoken

26、D. to speak 简析简析: 该题应选该题应选B。测试过去分词作后。测试过去分词作后置定语表达被动置定语表达被动,等于定语从句等于定语从句 which is spoken。3. Most of the artists _ to the party were from South Africa. A. invited B. to invite C. being invited D. had been invited 简析简析: 该题应选该题应选A。测试过去分词作后。测试过去分词作后置定语表达被动置定语表达被动, 等于定语从句等于定语从句who were invited。4. The com

27、puter centre, _ last year, is very popular among the students in this school. A. open B. opening C. having opened D. opened 简析简析: 该题应选该题应选D。测试过去分词短语作。测试过去分词短语作定语放在所修饰的名词后定语放在所修饰的名词后,可以用非限制可以用非限制性定语从句性定语从句“which was opened last year”代替。代替。5. The first textbooks _ for teaching English as a foreign lan

28、guage came out in the 16th century. A. having written B. to be written C. being written D. written 简析简析: 该题应选该题应选D。测试过去分词作后置。测试过去分词作后置定语表达被动定语表达被动,等于定语从句等于定语从句which were written。 另外另外,分词作状语时分词作状语时,如果其逻辑主如果其逻辑主语与整个句子的主语不一致时语与整个句子的主语不一致时,需要独需要独立主格结构或立主格结构或 with 复合结构来替代。复合结构来替代。(此时此时,也可把该分词看成介词的宾语补也可把该

29、分词看成介词的宾语补足语。足语。)例例: The murderer was brought in, with his hands _ behind his back. A. being tied B. having tied C. to be tied D. tied 简析简析: 很显然很显然,待选部分的逻辑主语是待选部分的逻辑主语是 his hands,而不是句子的主语而不是句子的主语 The murderer,而而 his hands 对于动词对于动词 tie来说来说,只能是被只能是被动承受。因此动承受。因此,该题应选该题应选D。 6. When _ if she would request a rise, the actress said that money was not important. A. asked B. asking C. having asked D. being asked7. Yesterday I saw in the newspaper a teaching post _ at a school close to my home and I wanted to apply for it. A. advertises B. advertising