M5U3过去分词做状语.ppt

1、Grammar,Look at the sentence in the reading passage.,In the sentence the past participle is used as the adverbial. It is a way of joining two clauses together: 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 day

2、s.,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,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。,attention,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 work

3、s 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,1. When it is heated, ice will be changed into water. When heated, ice will be changed into water.,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。,2. When it is seen un

4、der 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,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

5、was no longer afraid.,相当于表示原因的状语从句。,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,If they had been given more attention, the cabbages could have grown better. Given more attention, the cabbages could have grown

6、 better.,前面可带if，unless等从属连词，相当于条件状语从句。,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,The hunter left his house, followed by his dog. The hunter left his house, and he was followed by his dog.,没有相当的状语从句可以代替。,2. She sat by t

7、he 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,1) 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。,Summary,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被动。,Rewrite with proper conjunctions.,1. United

8、we stand, divided we fail. If we are united, we will stand, but if we are divided, we will fail.,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 invitations to give lectures. Because he w

9、as 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 te

10、enagers. 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.

11、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。,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, hell make a first-class tennis player. _, hell ma

12、ke 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 time,Confused by the new surroundings,4) When he was questioned by the police about the fire, he became tense. _ _, he became tense.,Question

13、ed by the police about the fire,1. Following the old man, we went upstairs. (we followed the ) (跟着那个老人, 我们上去了) 2. Followed by the old man, we went upstairs. (we were followed by) (被那个老人跟着, 我们上去了),Compare,（伴随）,（伴随）,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. S

14、een 4. 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. Seen,Difference 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。 _ the book, I find it useful. 在使用的过程中，我发现这本书很有用。 _ at her, he jumped wi

15、th joy. _ at by her, he jumped with joy.,Used,Using,Looking,Looked,从A、B、C、D中选出最佳选项。 1. The research is so designed that once _ nothing can be done to change it. (全国 2002) A. begins B. having begun C. Beginning D. begun,D,高考链接,2. _ to sunlight for too much time will do harm to ones skin. (上海 2002) A.

16、 Exposed B. Having exposed C. Being exposed D. After being exposed 3. Prices of daily goods _ through a computer can be lower than store prices. (2002 北京春) A. are bought B. bought C. been boughtD. buying,C,B,4. When first _ to the market, these products enjoyed great success. (2004 全国卷II) A. introdu

17、cing B. introduced C. introduce D. being introduced 5. _ with the size of the whole earth, the biggest ocean does not seem big at all. (湖北 2004) A. Compare B. When comparing C. Comparing D. When compared,B,D,6. When _ help, one often says “Thank you.” or “Its kind of you.” (福建 2005) A. offering B. t

18、o offer C. to be offered D. offered 7. _ with so much trouble, we failed to complete the task on time. (四川 2006) A. Faced B. Face C. Facing D. To face,D,A,8. _ by a greater demand for vegetables, farmers have built more green houses. (浙江 2007) A. Driven B. Being driven C. To drive D. Having driven 9. The f