北师大版高中英语选修八Unit 22《Environmental Protection》(The Ninth Period)教案.doc

1、安徽省滁州市第二中学高中英语 Unit22 Environmental Protection The Ninth Period Communication Workshop (II)教案 北师大版选修 8 Teaching goals 教学目标 1. Target language目标语言 重点词汇和短语 to sum up, for example, as a result, however, in addition, apart from, although, such as, according to 2. Ability goals 能力目标 To practice writing a

2、 report To practice using formal linkers To practice using synonyms to avoid repetition Enable students to show sympathy in communication and use ellipsis in speaking. 3. Learning ability goals 学能目标 Enable students to write a report. Teaching important points教学重点 How to write a report Teaching diffi

3、cult points教学难点 How to use formal linkers and how to avoid repetition Teaching methods教学方法 Speaking, discussing and writing Teaching aids 教具准备 Multi-computer Teaching procedures & ways 过程与方式 Step I Revision Check the homework Step II Writing: A Report Before you start Deal with Ex1. Ask students to

4、match sections A-D with the headings in Ex1 on Page 12. T: Here is a report on Noise pollution and noise control measures in China. Please read the report quickly and match sections A-D with the headings in Ex1 on Page 12. Deal with Ex2. First explain the function of linking words and expressions. T

5、hen ask students to finish Ex2. T: In this class we are going to using formal linkers. (Show the following on the PowerPoint.) Linking words are essential for your writing to be natural and clear. The function of linking words Linking devices are neither nouns, nor verbs. They provide a text with co

6、hesion and illustrate how the parts of the text relate to each other. Here are some of the functions which linking words provide. Adding extra information to the main point, contrasting ideas, expressing cause and effect, showing exactly when something happened (narrating), expressing purpose (why?)

7、 and opinion, listing examples, making conclusions and giving emphasis. The majority of linking devices can be followed by either a noun phrase or a clause. Here is a list of the principal linking words in English, their function and if their position is usually fixed. Linking words - by Viv Quarry

8、Adding and Contrasting Expressing cause / reason *and as well as besides Moreover, Furthermore, What is more, In addition, not only . but also another point is that relative clauses who where that which whose to whom when what why *but However, Although despite In spite of Nevertheless, On the contr

9、ary, on the one hand on the other hand, whereas while but while For one thing, In contrast, neither . nor because as since As a result, This is why because of Due to Owing to For this reason, Expressing effect / result *so so . that such a . that Therefore Thus Consequently, too . for / to not enoug

10、h . for / to Narration Expressing purpose First (of all) At first At the beginning In the beginning then next Before After After that afterwards When While during Soon prior to immediately Once Suddenly As soon as on No sooner . than Hardly . when Finally Eventually At the end In the end At last To

11、begin with, until to so as to in order that so that for (Non-specific) Expressing opinion I would say that In my opinion, I think (that) I believe (that) Personally Apparently, Giving examples Summing up / concluding Emphasis for example, for instance, this includes such as e.g. (for example) i.e. (

12、that is) All in all overall generally In conclusion, on the whole in the main To sum up, especially particularly Naturally, exactly because above all Whatever Whenever too / enough The more . * Avoid starting a sentence with these words. Step III Practice Deal with Ex1 in Language Power on Page 60.

13、Students work individually to finish the exercise in eight minutes. Then they will compare their answers in groups. Then Teacher will ask four students to read the article (each student one paragraph) and check the answers during this procedure. Step IV Synonyms Deal with Ex3&4 on Page 13. T: In wri

14、ting we can avoid repetition by using synonyms. Find words and expressions in the report which are similar to the given words and expressions in Ex3 on Page 13. Do the exercise individually. Then we will check the answers together. Deal with Ex4 in the same way. Step V Practice Deal with Ex2 in Lang

15、uage Power on Page 60. Ask students to work in pairs and use a good dictionary when necessary. Step VI Write a report First explain the stages to write a report to students. Then students will work in groups to write the report. T: Attention, please! In this class weve learned how to use linking wor

16、ds and expressions and how to avoid repetition. These are techniques to write a report. Next we will learn the stages to write a report. How many stages are there to write a stage? Ss: Five. T: Please read the five stages together. Stage 1 Choose the subject for your report. Stage 2 Find out statist

17、ics and information about the topic of your report. Stage 3 Plan your report. Decide if the statistics should be included in the positive or negative facts. Think of one or two recommendations for the conclusion. Stage 4 Write your report. Try to avoid repeating words and expressions. Stage 5 Check

18、your report. . Students are given enough time to write the report. After they finish the report, ask several students to read their reports to the class. Or show their reports on the projector, correct the mistakes with the whole class if there is any. If time is limited, students may finish writing

19、 the report out of class. Step VII Homework 1. Do Ex3 on Page 61. 2. Finish the report. A sample of a report Global warming There are many problems concerning the environment. Pollution, destruction of the rainforests, and the consumption of all of our planets natural resources are just a few. None

20、of these issues quite compare to the problem of global warming. Global warming is caused when factories and cars burn fossil fuels and let off carbon dioxide into the atmosphere. Carbon dioxide in the atmosphere plays an important role in warming the earth by trapping the earths heat, in whats calle

21、d the greenhouse effect. The burning of fossil fuels has generally increased the amount of carbon dioxide in the atmosphere. The carbon dioxide then puts a layer on the greenhouse gasses. The greenhouse gasses let in rays from the sun but dont let them out. As the concentration of greenhouse gases g

22、rows, more heat is trapped in the atmosphere and less escapes back into space. This increase in trapped heat changes the climate and alters weather patterns, which may hasten species extinction, influence the length of seasons, cause coastal flooding, and lead to more frequent and severe storms. Are

23、 governments doing enough to prevent global warming? Global warming can be controlled and sustained if we start now. There are an overwhelming number of issues that need to be addressed in order for us to help improve our environment. Global warming makes us feel very uneasy. To know that one day th

24、e polar icecaps could melt is a scary thought. If global warming continues to increase and raises the earths atmospheric temperatures, the melting of the polar ice caps could become a reality. This would cause horrific devastation to many parts of the world. There would be floods, record heat waves, and destruction of aquatic life, scorched forests and disappearing species. If global warming continues to go unattended, it will slowly destroy the earths ecosystems and the life that depends on them.