关系副词引导的定语从句关系副词的用法关系副词指代在从句中的作用when (=at/in/on /during which)时间状语where (=in/at /on/under which)地点状语why (=for which)原因状语一.关系副词where引导的定语从句。where引导的定语从句其先行词往往是表示地点的名词。1. China is the only country where wild pandas can be found.2. This is the house where I lived two years ago. 知识拓展：如果定语从句分别修饰point, situation, stage, condition和case, position 等表示抽象意义的词，常用where / prep + which引导，意思是“到了某种地步，在某种境况中”。 Ive come to the point where I cant stand him.I have reached a point in my life whereI am supposed to make decisions of my own.练一练1. Its helpful to put children in a situation _ they can see themselves differently. 2. Life is like a long race _we compete with others to go beyond ourselves. 3. They will fly to Washington, _ they plan to stay for two or three days.二关系副词when引导的定语从句when引导的定语从句其先行词往往是表示时间的名词。The time when I first met Nelson Mandela was a very difficult period of my life.cant forget the year when I studied English in Beijing University. 练一练：1. Because of the financial crisis, days are gone _ local 5-star hotels charged 6,000 yuan for one night. 2. We went through a period _ communications were very difficult in the rural areas. 3. Occasions are quite rare _ I have the time to spend a day with my kids.三关系副词why 引导的定语从句。why引导的定语从句其先行词是reason。The reason why he didnt come to the party is that he didnt want to see Jane.Can you tell me the reason why you are late?练一练1) The reason _he didnt come was that he was ill.2) The reason _ he explained is not true.3) The reason _ he was absent was _ he had a bad cold.四“介词+ 关系代词”引导的定语从句:介词后的关系代词只能是which （指物）whom（指人） 介词选择的原则：一） 介词根据从句谓语动词的搭配习惯而确定 on which I spent 5 yuan . for which I paid 5 yuan .This is the book from which I learnt a lot.about which Tom often talks二）. 介词根据先行词的搭配习惯而确定 I remember the day on which I joined the Party. the days during which I lived here. the month in which I stayed there.三）. 介词根据从句所表达的意义而确定My computer, without which I cant play computer games, crashed yesterday.Learning a countrys culture is like opening a window, through which you can know about that country better.练一练1. Gun control is a subject _ Americans have argued for a long time.2. The house I grew up _ has been taken down and replaced by an office building.3. Tom received training in a computer for one year , _ he found a job in a big company.4. We saw several natives advancing towards our party, and one of them came up to us, _ we gave some bells and glasses.5. He paid the boy $10 for washing ten windows, most of _ hadnt been cleaned for ten years.五定语从句与其他从句的比较1. 非限制性定语从句和单句/并列句的比较He has two sons. Both of_ are teachers. （ 句）He has two sons, and both of _are teachers. （ 句）He has two sons; both of _are teachers. （ 句）He has two sons, both of _are teachers. （ 句）练一练：1. Do you think such a place _ you speak of is worth visiting?2. He promised to come to see me on purpose on Sunday, _ I doubt very much. 3. There is a lake near our schoolyard, _ depth is out of your expectation. 4. Do you have anything in mind _ youd like for supper?Well, anything is Ok for me. 5. The house in _ he used to live has turned into a library. 6. Students in our school, most of _ are from the south of China, enjoy rice very much.7. Can you think of a situation _ this idiom is used?8. _ is often the case, teachers in our school usually return to school on Sunday evenings. 9. Which is the road _ leads to the village _ you were born?10. The newcomer is from Jiangxi, _ I can tell from his accent. 11. Alec asked the policeman _ he worked to contact (联系) him whenever there was an accident.(上海)12. We are living in an age _ many things are done on computers. (北京)13. I can think of many cases _ students obviously knew a lot of English words and expressions but couldnt write a good essay. (上海)14. The English play _ my students acted at the New Years party was a success. (安徽)15. The old scientist, for _ life was hard in the past, still works very hard in his eighties.