动词-ing做状语【学案】
（必修四第四单元语法点）
1.-ing短语在句子中可作状语，来修饰谓语动词或整个句子，表示动作发生的时间、原
因、条件、结果、让步或伴随等情况。
2. -ing短语作状语一般表示一个次要的动作，一般都可以变为相应的状语从句或并列句。
1. 作时间状语
-ing短语作时间状语要置于句首。如：
Hearing the bad news, they couldn’t help crying.
=When______________________, they couldn’t help crying. 当听到这个不幸的消息时，他们情不自禁地哭了起来。
Having received his letter, I decided to write back. =After_______________________, I decided to write back.
收到他的信后，我决定给他回信。
注意：当v-ing形式所表示的动作发生在谓语动词动作之前时，应使用完成式：having done
_______________(finish) his homework, he rushed out to play basketball.
2. 作原因状语
-ing短语作原因状语置于句首。如：Being so angry, he couldn’t go to sleep.
=Because__________________, he couldn’t go to sleep. 因为太生气了，他不能入睡。Having been to the Great Wall many times, he didn’t go last week.
=_______________he had been to the Great Wall many times, he didn’t go last week. 因为
他已经去过长城许多次，上周他就没去。
3. 作条件状语
-ing作条件状语置于句首或句末。如：Working hard, you will succeed.
=If______________, you will succeed. 如果你勤奋一点，你就会成功。
4. 作让步状语
-ing短语作让步状语，可置于句首或句末，常与even if, though 连用。如：
Though working from morning till night, his father didn’t get enough food.
=Though_____________________________________, he didn’t get enough food.
虽然他父亲从早到晚拼命地干活，但是他还是挣不到足够的吃的。
5. 作伴随状语
置于句首或句末。如：They came into the classroom, singing and laughing.
=They sang and laughed; they came into the classroom. 他们又唱又笑地走进教室。注意：连词+现在分词
1. -ing短语与when, while, though, until, if等连词连用时，相当于这些连词引导的一个从句。如：
When working in the factory, he was an advanced worker.
=When_____________________, he Though willing to attend the party, he refused the invitation.
=Though he was willing to attend the party, …was an advanced worker.
用“连词+现在分词”的结构If you play all day, you will waste your valuable time. =If playing all day, you will waste your valuable time.
2. 动词-ing形式在句中作状语时，其逻辑主语与主句的主语保持一致。如：
He traveled on the plane like this, keeping the tortoise hidden in a blanket.
= When he traveled on the plane like this, he kept the tortoise hidden in a blanket.
T / F）
1. a. Hearing the news, tears ran down her face.
b. Hearing the news, she cried out sadly.
2. a. Entering the classroom, I found nobody in it.
b. Entering the classroom, nobody was found in it.
3. a. Looking out through the window, the garden was beautiful.
b. Looking out through the window, we saw a beautiful garden.
4. a. Reading the evening newspaper, a dog started barking.
b. I was reading the evening newspaper when a dog started barking.
5. a. Being fine, we will have the sports meeting next week.
b. It being fine, we will have the sports meeting next week.
-ing形式的否定式为在其前面加not。如：He sat there, not knowing what to say.
注意：
1.当v-ing形式与句子的主语之间存在着逻辑上的动宾关系时，应使用被动式：being done Being helped by the teacher, she will learn English well.
2. 当v-ing形式被动式的动作发生在谓语动词动作之前时，应用完成被动式：having been done
Having been shown the lab, we were taken to see the library.
=____________________(translate)into many languages, the book was widely read all over the world.
1. Their car was caught in a traffic jam, thus ____ the delay.
A. to cause
B. causing
C. caused
D. cause
2. After seeing the movie, _____.
A. the book was read by him
B. the book made him want to read it
C. he wanted to read the book
D. the reading of the book interested him
现在分词 Form: ?doing ?having done（先后关系） 现在分词表示主动含义或动作正在进行。 Exercise: 划出句中的现在分词，并指出它在句中做何成分。 1. The three contestants were sitting at their desks on the stage, waiting. 2. Hearing the news, he jumped with joy. 3. Having finished his homework, he went out. 4. People living in the cities used to regard farming as boring and backward. 5. The changes in Sunqiao is very amazing. 现在分词做定语： Exercise: Combine each pair of sentences 1. The men are required to come to the headmaster’s office. They had some overseas working experience. 2. The people take part in a variety of exercise They can keep healthy. 3. The research at Sunqiao produces seeds. The seeds help farmers grow better crops. 4. People used to regard farming as boring and backward. These people live in cities. 5.Do you know the boy? He is standing under the tree. 6. The spiders store the mice for later. The mice serve as a source of food. Exercise: compare The swimming pool is clean and big. The swimming boy is his brother. The big writing desk is very expensive. The writing student is Tom’s classmate. 现在分词作状语：时间，条件，伴随方式，原因，结果 Exercise: rewrite the sentences 1. Kitty heard the news. She jumped with joy. 2. Tom put on his swim-suit. He dived into the swimming pool. 3. While she was cooking, she burned her right hand. 4. After he had finished his homework, he went out to play football. 以上改写后的三个句子中的现在分词短语做______状语。 现在分词作状语：相当于状语从句，但从句和主句的____语必须一致. 时间状语： 1. Working in the factory, he learned a lot from the workers.(分词一般式） 2. Having read the letter, she got very excited（完成式） 3. ________hearing the news, they all jumped with joy. 4. = as soon as _________________________________________. 5. Be careful when crossing the street. 条件状语： 1.If you walk hard, you will succeed. 2. = _______________________________ 伴随方式状语 1. She came _______(run) towards me. 2. The children ran out of the room, __________(laugh) and _______(talk) merrily. 3. ____________(travel) by jeep, we visited a number of cities. 4. ____________(follow) the guide, they started to climb. 5. _____________(follow) by the students, the teacher entered the office. 原因状语 1. Because I was sick, I stayed at home.
II 现在分词作定语或状语 1. The ______ boy was last seen ______ near the bank of the lake. A.missing; playing B. missing; play C. missed; played D. missed; to play 2. Mr Smith, ______ of the ______ speech, started to read a novel. A.tired; boring B. tiring; bored C. tired; bored D. tiring; boring 3. Don’t leave the water _______ while you brush your teeth. A. run B. running C. being run D. to run 4. John’s bad habit is ______ without thorough understanding. A. read B. being read C. to be read D. reading 5. Tell Mary that there’s someone ______ for her at the door. A. waiting B. waited C. waits D. to wait 6. The ______ waiter came up to us and said, “You are welcome.” A. smiling B. smiled C. smile D. to smile 7. Do you know the boy______ under the big tree? A. lay B. lain C. laying D. lying 8. I can hardly imagine Peter _______ across the Atlantic Ocean in five days. A. sail B. to sail C. sailing D. to have sailed 9. There are lots of places of interest _______ in our city. A. needs repairing B. needing repaired C. needed repairing D. needing to be repaired 10. The drunken husband knocked against the table and sent the bowls _______ in all directions before he was sent _______ by his wife. A. flying; to sleep B. flying; sleeping C. to fly; to sleeping D. to fly; to sleep 11. When we got back from the cinema, we found the lamp _______ but the door _______. A. being on; shut B. burning; shutting C. burning; shut D. on; shutting 12. When we got back from the cinema, we found the lamp _______ but the door _______. A. being on; shut B. burning; shutting C. burning; shut D. on; shutting 13. The woman found it no good ______ her daughter too much money. A. giving B. being given C. given D. gave 14. As the stone was too heavy to move, I left it ______ on the ground. A. laying B. lay C. lying D. lain 15. As the light turned green, I stood for a moment, not ______, and asked myself what I was going to do. (湖南07) A. moved B. moving C. to move D. being moved 16. The glass doors have taken the place of the wooden ones at the entrance, ______ in the natural light during the day. (天津2007) A. to let B. letting C. let D. having let 17. ______that she didn’t do a good job, I don’t think I am abler than her. (陕西2007) A. To have said B. Having said C. To say D. Saying 18 Whenever he was asked why he was late for class, he would answer carelessly, always ______ the same thing. (江苏2006) A. saying B. said C. to say D. having said 19. Don’t sit there ______ nothing. Come and help me with this table. (湖北2006) A. do B. to do C. doing D. and doing 20. When ______ different cultures, we often pay attention only to the differences without noticing the many similarities.(浙江2006) A. compared B. being compared C. comparing D. having compared 21. While watching television, ______. (2005全国卷III) A. the doorbell rang B. the doorbell rings C. we heard the doorbell ring D. we heard the doorbell rings 22. ______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.(北京2004) A. To wait B. Have waited C. Having waited D. To have waited
teaching design （课堂设计） 陈建军 教材分析( the analysis of teaching materia)l This teaching period mainly deals with the grammar: The Past Participle as the Adverbial and Attribute. And let students to do some exercises to consolidate it. 2. 学情分析( the analysis of the studen)ts Students often feel this item abstract and difficult, so it is necessaryto make the lesson interesting and connect with it with their daily life in order to let it easy to accept and understand. 3. 教学目标(Teaching aims) 知识目标(Knowledge aims) Enable students to learn how to use the past participle as the adverbial and attribute correctly. 能力目标(Ability aims) Enable students to use the past participle as the adverbial and attribute correctly and properly according to the context. 情感目标( Emotional aims) a. Get students to become interested in the grammar learning. b. Develop students'sense of group cooperation. 4. 教学重点和难点( teaching important points and difficult point)s a. Get students to learn and consolidate how to use the past participle as the adverbial and attribute correctly. 5. 教学过程(Teaching procedures) Step1.Greetings Step2 .Check&Revision Step3.Presentation 1. 过去分词作状语时，其前面可以带有相应的连词，如when, though, although, as if, if 等， 表时间，让步，条件等。 If invited, I will attend the wedding of my friend. 2. 过去分词作状语时，分词的逻辑主语与句子的主语一致。 If caught, the thief will be punished by the police. 3. 过去分词短语与句子主语之间存在逻辑上的动宾关系，即被动关系。 Asked why he was late, he cried. 4. 有些过去分词已形容词化，作状语时表示人得状态。常见的有satisfied, interested, moved 等。 Disappointed at the examination results, the girl stood there without saying a word. Step 4 summing 巧学助记：分词作状语，主语是问题 逗号前后两动作，共用一主语主语找出后，再来判关系主动用ing, 被动用ed Having done 表先后，千万要牢记
教学目标：讲解现在分词作状语及区分不定式、现在分词作状语的异同 重点难点： 1.现在分词和不定式作状语时，其逻辑主语一般应与句子的主语保持一致。 2.分词作状语时，要看它同句子主语之间的关系，以确定是现在分词还是过去分词。 3.注意非谓语动词与句子谓语动词的时间关系，以确定分词的时态形式 4、弄清非谓语动词与其逻辑主语的关系，以确定非谓语动词的语态形式. 5. 连词+分词形式（分词作状语的省略问题） 6.不定式作结果状语和现在分词作结果状语的区别。 7. 现在分词的独立主格结构和评价性状语 Step 1 lead in 朗读下面一首唐诗，找出其中的现在分词形式 Thinking in the Silent Night 静夜思 Before my bed there is bright moonlight 床前明月光 So that it seems that frost on the ground. 疑是地上霜 Lifting my head, I watch the bright moonlight. 举头望明月 Lowering my head, I dream tha t I’m home. 低头思故乡 Step2 现在分词作状语的意义 动词的现在分词作状语，修饰动词，相当于状语从句，在句中表示时间、原因、结果、条件、让步、行为方式或伴随情况及独立成分等，作时间、原因、条件、让步状语时多位于句首；作结果、伴随情况状语时常位于句末。 一. -ing分词短语作时间状语，代替一个时间状语从句(引导词有when ,while ) 温馨提示： 1．现在分词所表示的动作与主句的动作一般是同时发生，有时可由连词when, while引出。 2．现在分词所表示的动作一发生，主句的动作就立即发生时。如： When she saw those pictures，she remembered her childhood. =Seeing those pictures, she remembered her childhood. 看到那些画，她想起了自己的童年。 As soon as he heard the good news, he jumped with joy. =（0n）Hearing the good news, he jumped with joy. 他一听到这个好消息，就高兴地跳起来。 二．-ing分词短语作原因状语，相当于一个原因状语从句。(引导词有because ,as ,since) 如：As he was ill, he didn't go to school yesterday =Being ill, he didn't go to school yesterday. 由于生病，他昨天没有上学。 三．-ing分词也可作条件状语和让步状语，相当于一个条件状语从句。(引导词有if,unless,once) If you work hard, you will succeed. =Working hard, you will succeed. 如果你勤奋一点，你就会成功。 If you turn to the left, you will find the path leading to the school.
1.我有一块中国制造的手表。（分别用分词与定语从句造句） I have a watch made in China. I have a watch which was made in China. 2.我正在读一本莫言著的书。（分别用分词与定语从句造句） I was reading a book written by Moyan. I was reading a book which was written by Moyan. 3.中国已经制造出使用磁悬浮技术的高速列车。（分别用分词与定语从句造句）China has made a high-speed train using magnetic levitation. China has made a high-speed train which uses magnetic levitation. 4.这是一种生活在海洋里的昆虫。（分别用分词与定语从句造句） This is an insect living in the ocean. This is an insect which lives in the ocean. 5.从山上看，我们能看到青岛漂亮的风景。（现在分词作状语）
Seeing from the mountain, we can see the beautiful scenery in Qingdao. 6.孩子们高兴地笑着说着，跑出教室。（现在分词作状语） The children ran out of the room, laughing and talking merrily. 7.从浮山上看，青岛很漂亮。（过在分词作状语） Seen from the Mount Fu, Qingdao is very beautiful. 8.由于写的匆忙，这篇文章并不是很好。（过在分词作状语） Written in a hurry, the article was not so good.
现在分词作状语的用法 现在分词作状语： ①现在分词doing所代表的动作或状态与谓语动词是同时 或几乎是同时发生的，可以作时间、原因、方式、条件、结 果、目的、让步、伴随等状语。分词的逻辑主语就是句子的主 语。如： Rushing out of the house, he was knocked down by a car. 他一冲出屋子就被一辆车撞倒了。 My cousin went to Shenzhen, hoping to find a job there. 我表兄去深圳了，希望在那儿找份工作。 The child fell，striking his head against the door. 小孩摔了一跤，头在门上碰了一下。 In the last few years, the country has had a hard time, suffering several killer quakes. 过去几年里，这 个国家经历了艰难的时期，遭受了几次致命的地震。 Being spring, the flowers are in full bloom. 因为是春天，所以花都盛开着。
②有些分词作状语，没有逻辑上的主语，已成为习惯用法：considering, judging from, talking of, allowing for(考虑到), generally/frankly/honestly/roughly/strictly speaking, assuming that(假设)等。如： Talking of this film, its wonderful. 说到这部电影，好极了。 Assuming that it is true, what should we do now 假定那是真的, 我们现在该怎麽办 Judging by the direction of the wind, it wont rain today. 根据风向测度, 今天不会下雨。 Social psychology, strictly speaking, deals with the behavior of people in groups. 严格地说, 社会心理学研究人们的群体行为。
谓语动词: 有提示词, 句子缺谓语(与主语构成主谓结构) I. I _______ (tell) by my classmates about that. 2. My mother often __________ (stop) me from watching TV. 时态语态变化, 及主谓一致 非谓语动词(主动---doing , 被动---done, 目的/结果/将要to do ,) 1. We must also consider the reaction of the person __________ (receive) the gift. 2. My pupils, Tom__________ (include), liked her. 1. He entered, ________ (hold) a book in his hand. 2. He entered the room and _______ (hold) a book in his hand. 3. I politely refused her invitation and _____ (walk) away. 4. I politely refused her invitation, ______ (walk) away. 两个动词是同时发生的时候 主语+ 谓语1 + and / but + 谓语2 主语+ 谓语，+非谓语 1. When he _______ (come) in, I was reading a book. 2. Unless I ________ (invite), I won’t attend he party. 3. When _____ (hear) the news, I was excited. 4. Unless ____ (invite), I won’t attend he party. --- When / if / unless / /After/Before 等连词后没有主语+非谓语（--- ing /---ed ) , 主句---When / if / unless / /After /Before等连词+ 主语+ 谓语，主句 1. A boy ________( call ) Jack came here today 2. A boy who ________( call ) Jack came here today 3. We enjoy the movie _________ (direct) by a world famous artist. 4. We enjoy the movie which_________ (direct) by the world famous artist. 名词后没关系词时+ 非谓语, 非谓语动词修饰前面的名词做定语 名词后有关系词时+谓语，做定语从句中的谓语 1.“You can’t catch me!” Jan et shouted, _______ (run) away. 2.He said thanks and ____ (smile) a row of teeth. 3.When first ___________ (introduce) to the market, these products enjoyed great success. 4.When he_______( arrive ) at the corner , he met his friend. 5.________ ( sleep ) late, he turned off the alarm clock. 6.Don’t use words, expressions, or phrases _______(know) only to people with specific knowledge. [例1] I got on the bus and found a seat near the back, and then I noticed a man 18 (sit) at the front. （2011广东卷） [例2] He spit it out, __37___(say) it was awful. （2010广东卷） [例3]The fact that so many people still smoke in public places _______ that we may need a nationwide campaign to raise awareness of the risks of smoking. A. suggest B. suggests C. suggested D. suggesting turn
1、状语从句中的谓语动词是系动词be时: 1.1、当从句主语与主句主语相同时，只要去掉从句中的连接词与主语并把be改为being. 即可。 As he is a tailor, he knows what to do with this material. →Being a tailor, he knows what to do with this material. 1.2、从句的主句主语与从句主语不同时，只要保留从句的主语，其它变化同以上1.1。 As he is still a child, you shouldn't be too hard on him. →He being still a child, you shouldn't be too hard on him. 1.3、当从句是否定句时，只要在being 前加否定词not ，其它变化同以上1.2。 As he was no tall enough, he couldn't reach for the apple. →No being tall enough, he couldn't reach for the apple. 2、当从句的谓语动词是进行时态（现在进行时态或过去进行时态）时: 2.1、当从句主语与主句主语相同时，只要去掉从句中的引导词与主语并去掉助动词be保留现在分词即可。有时为了强调进行状态,亦在分词前保留being. While he was reading the book, he nodded from time to time. →While reading the book, he nodded from time to time 2.2、当从句与主句的主语不同时，除保留从句主语外，其他变化同以上2.1 When he was giving a telephone call, his wife was reading a novel. →He giving a telephone call, his wife was reading a novel 2.3、当从句是含not的否定句时，只要在being 前加否定词not ，其它变化同以上1.1与2.2 As Tom is not working in his office, No one receives the telephone. →Tom not working i n his office, no one receives the telephone. 3、当从句中的谓语动词为一般时态(一般现在时与一般过去时)的实义动词时： 3.1、当从句主语与主句主语相同时，只要去掉从句主语并将实义动词改为现在分词即可Look round when you cross the street. →Look round when crossing the street. 3.2、当从句与主句的主语不同时，只要保留主语，其他变化同以上3.1 When they left the airport, we waved again and again to them. →They leaving the airport, we waved again and again to them. 3.3、当从句是含not的否定句时，只要在现在分词前加not，其他变化同以上3.1与3.2 As he didn't know anything about the accident, he went to work as usual. →.Not knowing anything about the acc ident, he went to work as usual. 4、当从句的谓语动词是一般时态(一般现在时与一般过去时)的被动态时： 4.1、当从句主语与主句主语相同时，只要去掉从句中的连词与主语并去掉be保留过去分词即可。 As the teacher was surrounded tightly by a group of students, he couldn't get away. →Surrounded tightly by a group of students the teacher cou ldn't get away. 4.2、当从句与主句的主语不同时，只要保留主语，其他变化同以上4.1 A. As the car was trapped in the sand, we had to go for help. →The car trapped in the sand, we had to go for help. 4.3、当从句是含not的否定句时，只要在过去分词前加not外，其他变化同以上4.1与4.2 As he was not killed dead in the field, he escaped at the very night. →Not killed dead in the field, he escaped at the very night. 5、当从句的谓语动词是完成时态(现在完成时与过去完成时)时：
现在分词作状语的用法 现在分词作状语的用法 现在分词作状语： ①现在分词doing所代表的动作或状态与谓语动词是同时或几乎是同时发生的，可以作时间、原因、方式、条件、结果、目的、让步、伴随等状语。分词的逻辑主语就是句子的主语。如：Rushing out of the house, he was knocked down by a car. 他一冲出屋子就被一辆车撞倒了。 My cousin went to Shenzhen, hoping to find a job there. 我表兄去深圳了，希望在那儿找份工作。 The child fell，striking his head against the door. 小孩摔了一跤，头在门上碰了一下。 In the last few years, the country has had a hard time, suffering several killer quakes. 过去几年里，这个国家经历了艰难的时期，遭受了几次致命的地震。 Being spring, the flowers are in full bloom. 因为是春天，所以花都盛开着。 ②有些分词作状语，没有逻辑上的主语，已成为习惯用法：considering, judging from, talking of, allowing for(考虑到), generally/frankly/honestly/roughly/strictly speaking, assuming that(假设)等。如：
Talking of this film, its wonderful. 说到这部电影，好极了。 Assuming that it is true, what should we do now? 假定那是真的, 我们现在该怎麽办? Judging by the direction of the wind, it wont rain today. 根据风向测度, 今天不会下雨。 Social psychology, strictly speaking, deals with the behavior of people in groups. 严格地说, 社会心理学研究人们的群体行为。
分词作状语用法是所有分词用法中最重要的，也是最难掌握的。 分词在句中作状语时，其逻辑主语必须是句子的主语。 一、现在分词作状语 一、现在分词作状语，表主动、进行，相当于一个状语从句，根据需要可以使用被动式或完成式。 Studying at the hometown, I enjoyed the happiest time during my life. Being ill, she can't go to work today. The children ran out of the room, laughing and jumping. 1. He sent me an e-mail, ________ to get further information. A. hoped B. hoping C. to hope D. hope 2. Suddenly, a tall man driving a golden carriage ________ the girl and took her away, ________ into the woods. A. seizing; disappeared B. seized; disappeared C. seizing; disappearing D. seized; disappearing 二、现在分词的时态语态 1. 现在分词的一般式由“动词+ing”构成，其被动式为“being+动词过去分词”。 例如：The students standing there are from Class Three. The English novel being translated by the editor now will be completed in October. 2. 现在分词的完成式由“having +动词过去分词”构成，其被动式为“having +been+动词过去分词”。 例如：Having finished all the work, they had a good rest. Having been given the right answer, the teacher asked me to sit down. Given more time, we will finish the work in time. 3. 现在分词的否定式为“not +动词-ing”，被动式的否定式为“not+being+动词过去分词”，其完成式的否定式为“not + having +动词过去分词”。 例如：Not knowing what to do, he sat there crying. Not being noticed by the public, the young writer felt a little pity. 1. _______ from heart trouble for years, Professor White has to take some medicine with him wherever he goes. A. Suffered B. Suffering C. Having suffered D. Being suffered 2. Finding her car stolen, _______. A. a policeman was asked to help B. the area was searched thoroughly C. it was looked for everywhere D. she hurried to a policeman for help 二、过去分词作状语 过去分词只有一种形式，即done，表被动。 The mother came in, followed by her son. When heated，water will be turned into steam. Deeply moved by the film, we all cried. Born into a poor family, he had no more than two years of schooling. 1．_____ from the top of the TV tower, and we can get a beautiful sight of most of the city. A. To see B. Seen C. Seeing D. See 2. _____ in 1613, Harvard is one of the most famous universities in the United Stated. A. being founded B. Founded C. It was founded D. Founding 三、过去分词与V-ing作状语的区别
现在分词(V-ing)作定语和状语 课前预习案 学习建议：根据所列例句，理解并尝试总结现在分词在句子中的用法。 动词--ing形式作定语和状语 I.ing 形式作定语 1. 现在分词作前置定语时，在逻辑上与所修饰的名词之间为主谓关系，也可改成定语从句；如果与所修饰的名词之间没有主谓关系，定语相当于一个介词for 引导的短语。现在分词位于所修饰的名词之后做后置定语，与所修饰的名词之间呈逻辑上的主谓关系，相当于一个定语从句。如：a listening child= a child who is listening, a walking stick= a stick for walking. 2. 现在分词作定语往往表示“令人……”，主动的或正在进行的动作。如：a moving film, a developing country. II. ing 形式作状语 动词-ing形式在句子中做状语，表示的动作是主语动作的一部分，与谓语动词表示的动作或状态是同时或者几乎同时发生的，经常可以做时间、原因、方式、条件、结果、目的、让步状语从句。句子的主语必须是状语的逻辑主语；而且主语与作状语的分词之间呈逻辑上的主谓关系。 1.原因状语，相当于原因状语从句。 1).Being ill, she didn’t go to school today. 因为生病，她今天没上学去。 2). Seeing no one at home, I decided to come again. 看见没有人在家，我决定再来一趟。 2. 时间状语，相当于when, while等引导的从句。 1).Hearing the good news, he jumped with joy. 当听到这个好消息时，他高兴地跳了起来。 2).Walking in the street, I saw a friend of mine.