1、 Period 2 Using languageUnit 6 At one with nature1.To understand the important sentence patterns and learn to use them.2.To learn the usage of some important words.3.To practise the language points.Learning aimsLeading in This is the place where we lived for 5 years.I know the reason why he did so.I
2、 remember the day when we met.in the placefor the reasonon the dayWhat do“where”,“why”and“when”refer to?(1)“介词+关系代词”引导定语从句当关系代词在定语从句中作介词的宾语时，通常用介词+关系代词引导定语从句。如果关系代词在句中指人，则用“介词+whom”；如果指物，则用“介词+which”。The man by whom the thief was caught was a good policeman.那个抓住小偷的男人是个优秀的警察。Grammar定语从句介词+关系代词名师点津（1）
3、when=at/in/during/on+which（2）where=in/at/on+which（3）why=for+which The date when I joined the army was October 12，1960.The date on I joined the army was October 12，1960.The house in which Mark lived is now a library.The house Mark lived is now a library.Is that the reason why she suddenly changed her
4、 mind?Is that the reason for she suddenly changed her mind?which where which This is the reason for _ I was praised by my chemistry teacher.【即学即练】which(2)介词选用的规则介词的选择要根据其与先行词的关系以及句意决定，在定语从句中，经常可以根据谓语动词的搭配习惯来确定介词。fromto This is the book _ which I got the story.Tom is the very person _ whom I will tur
5、n when in trouble.【即学即练】I remember the day which I settled in China.I remember the days which I lived here.I remember the month which I stayed there.onduringin This is the book which I spent 5 dollars.This is the bookwhich I paid 5 dollars.This is the bookwhich I learnt a lot.This is the bookwhich T
6、om often talks.My computer，which I cant surf the Internet，crashed yesterday.This is the man to whom you could turn for help.This is the man you could for help.onforfromabout without whomturn to(3)其他注意事项含有介词的动词固定短语在定语从句中一般不拆开，在这种情况下，介词仍然放在后面，如hear from,look after等。而在介词处于句尾时，句中的关系代词可以省略。I met the chil
7、d whom I looked after ten years ago.我遇到了十年前我照料过的那个孩子。I wanted to visit the house which my grandparents Iived in.我想去看看我祖父母曾经居住过的房子。where 引导的定语从句与状语从句的区别定语从句 地点状语从句 地点状语从句判断下列句中的where 从句是定语从句还是状语从句（）Is there a shop around where（=in which）I can blow my bike tyres up?_（）Where there is a will，there is a
8、way._（）We should go where we are needed._【即学即练】Summary“介词+关系代词”引导的定语从句:介词+which/whom 定语从句中介词的选择:根据其与先行词的关系以及句意决定ExercisesComplete the sentences with preposition+whom or preposition+which.1.Wind power is an ancient source of energy _we may return in the near future.2.Gun control is a subject _ Americ
9、ans have argued for a long time.3.He was educated at a local grammar school,_ he went on to Cambridge.4.There are species living in the depths of the oceans _ we still know little.5.Todays English learners have a wide choice of dictionaries _ to choose.to whichabout whichafter which of whichfrom whi
10、ch 6.A good advertisement often uses words _ people attach positive meanings7.The position,however,_ you are applying,is not quite a well-paid one.8.In the end,it was Becky _ he turned for a gentle word and a smile.9.American women usually identify their best friend as someone _ they can talk frequently.10.In our class there are 46 students,_ half wear glasses.for whichto whomwith whomof whomto whichNature never deceives us,its always us who deceive ourselves.大自然从不会欺骗我们，欺骗我们的常常是我们自己。
