1、Unit 5Expressions and grammar导课 明标1.charity2.anual3.migrate4.seek5.professor6.measure7.determine8.eventually9.solution10.amazing11.crash12.destroy13.chemical14.survive15.effect16.accommodation1.manage to do2.the solution to 3.human activity4.cut down trees导课 明标Learning aims:1.Master the key points i
2、n the article；2.Review the grammar:Attributive clauses(2)-when,where,why.自主 合作(一)Self-study&Groupwork:Read and Translate.1.One of the most wonderful migrations in nature is that of North American monarch butterfly.2.These two pieces of information-the time of day and the point where the sun is in th
3、e sky-allow the butterfly to determine the way to go.3.Eventually,it manages to reach the places where it will spend the winter.4.The solution to the mystery of the monarchs amazing ability comes at a time when it is in serious trouble.5.Sadly,human activity is the main reason why the number of mona
4、rch butterflies is falling.6.In many of the places where the butterfly can befound,people are destroying the natural environment.7.They cut down trees and use chemicals that kill the plants that monarch caterpillars ate.8.People have been working together to record its migration and make sure that t
5、here are enough plants for it to feed on.9.If this works,there may come a time when the number of monarch butterflies increases once again.10.The more we know about this lovely creature,the greater the chance it will survive and keep its place in the natural world for a long time to come.自主 合作(一)Sel
6、f-study&Groupwork:Read and Translate.1.One of the most wonderfl migrations in nature is that of North American monarch butterfly.2.These two pieces of information-the time of day and the point where the sun is in the sky-allow the butterfly to determine the way to go.3.Eventually,it manages to reach
7、 the places where it will spend the winter.4.The solution to the mystery of the monarchs amazing ability comes at a time when it is in serious trouble.5.Sadly,human activity is the main reason why the number of monarch butterflies is falling.展示 质疑（一）6.In many of the places where the butterfly can be
8、found,people are destroying the natural environment.7.They cut down trees and use chemicals that kill the plants that monarch caterpillars ate.8.People have been working together to record its migration and make sure that there are enough plants for it to feed on.9.If this works,there may come a tim
9、e when the number of monarch butterflies increases once again.10.The more we know about this lovely creature,the greater the chance it will survive and keep its place in the natural world for a long time to come.展示 质疑（一）点评 提升(一)1.One of the most wonderfl migrations in nature is that of North America
10、n monarch butterfly.one of.:.之一考点：(1)后接名词复数；(2)与最高级连用；(3)one of.结构做主语，谓语动词用单数。Eg:我们学校里最受欢迎的老师之一是英语老师。One of the most popular teachers in our school is the English teacher.点评 提升(一)2.The more we know about this lovely creature,the greater the chance it will survive and keep its place in the natural wo
11、rld for a long time to come.句型：the+比较级，the+比较级译为：越.就越.句法分析：*前一个“the+比较级”为表示条件的状语从句，后一个“the+比较级”是主句。*本结构中常用省略结构。Eg:你学习越努力，你就越能取得好成绩。The harder you study,the better grades you will get.自主 合作(二)Self-study:Look at the sentences and answer the questions.(P53:Activity 1)1.Eventually,it manages to reach th
12、e places where it will spend the winter.2.The solution to the mystery of the monarchs amazing ability comes at a time when it is in serious trouble.3.Sadly,human activity is the main reason why the number of monarch butterflies is falling.Groupwork:Check the answers with each other.展示 质疑（二）Answers:w
13、here-the placewhen-a timewhy-the main reason点评 提升(二)关系副词(where,when,why)引导的定语从句:1.She would like to live in a country where it never snows.2.The solution comes at a time when it is in serious trouble.3.Sadly,human activity is the main reason why the number of monarch butterflies is falling.关系副词(wher
14、e,when,why)在定语从句中的作用：(1)起到连接作用(2)指代表示地点、时间、原因的先行词(why 的先行词只有reason)(3)在从句中充当状语1.These two pieces of information-the time of day and the point where the sun is in the sky-allow the butterfly to determine the way to go.2.Eventually,it manages to reach the places where it will spend the winter.3.The so
15、lution to the mystery of the monarchs amazing ability comes at a time when it is in serious trouble.4.Sadly,human activity is the main reason why the number of monarch butterflies is falling.5.In many of the places where the butterfly can befound,people are destroying the natural environment.6.If th
16、is works,there may come a time when the number of monarch butterflies increases once again.点评 提升(二)Read the sentences.1.He still remember the days _ we spent together.2.This is the house _ was built by my father four years ago.3.I wouldnt believe the reason _ you have given me.thatwhich/thatwhich/th
17、atThink and fill in the blanks：点评 提升(二)(2)代表先行词的关系词在句中做状语，用when、where、why引导。(1)代表先行词的关系词在句中做主语或者宾语，用that、which引导。总结：在总结：在定语从句定语从句中中先行词是表示时间、地点、原因的名词时，训练巩固Exercises:1.He cannot forget the days _they travelled together.2.I dont know the reason _ he didnt come to Toms party.3.We should go to the place
18、_ we are needed.4.We should go _ we are needed.5.This is the museum _ I visited last year.6._ I wind up my watch,it starts.whenwhywherethat/whichWhenwhere总结 测评 1.one of.2.the+比较级,the+比较级3.Grammar：关系副词引导的定语从句Summary：总结 测评 1.北京是最著名的城市之一。Traslate the following sentences.Beijing is one of the most famous cities.2.你对中国传统文化了解的越多，你就对它越感兴趣。The more you know about Chinese culture,the more you are interested init.3.我仍然记得我上大学的时光。I still remember the time when I was in college.4.这就是我喜欢英语的原因。This is why I like English.Homework：1.Sort out the notes and review them.2.Preview the next part.
