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1、Period 3Grammarthe Use of “It”(2)教学内容分析This teaching period mainly deals with the grammar：the use of “it”“It” has many usages in the English language.“It” can be used as a pronoun and the form of subject and object，and be used to express emphasis.From Unit 3 we know that “it” can be used as a pronou
2、n and the form of subject and object.In this unit we will learn that “it” can be used to express emphasis.This kind of sentence is called emphasized sentences.Its main form is “It is/was.that/who.”，which is a very useful sentence pattern.三维目标设计Knowledge and skills1To get the students to know the str
3、ucture of the emphasized sentences.2To let the students learn the usages of the emphasized sentences.3To enable the students to use the emphasized sentences correctly and properly.Process and methods1To ask the students to read the reading passage again，pick out the emphasized sentences from the rea
4、ding passage and translate them into Chinese.2To ask the students to discover the structure and usages of the emphasized sentences by comparing a lot of example sentences.3To ask the students to do the exercises in Discovering useful structures on Page 29 to master the emphasized sentences.4To ask t
5、he students to summarize the usages of the emphasized sentences.5To ask the students to do the exercises in Using Structures on Page 64 and some other additional exercises for consolidation.Emotion，attitude and value1To get the students to become interested in grammar learning.2To develop the studen
6、ts ability of comparing and summarizing.教学重、难点1To get the students to master the structure and usages of the emphasized sentences.2To enable the students to learn how to use the emphasized sentences.Step 1Revision1Check the homework exercises.2Dictate some new words and expressions.Step 2Warming upA
7、sk the students to compare the two sentences below.The second sentence is from the reading passage.Translate them into Chinese and then discuss any difference in meaning and form.Ask the students to explain why “it” is used in the second sentence.Human activity has caused this global warming.It_is h
8、uman activity_that has caused this global warming.Tell the students there are two more sentences in the text in which “it” is used for emphasis.Find them and then write them down._Suggested answers：1It_was a scientist called Charles Keeling，who made accurate measurements of the amount of carbon diox
9、ide in the atmosphere from 1957 to 1997.2.it_is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.Step 3Grammar learning Ask the students to study the following sentences and try to summarize the structure of the emphasized sentences.Step 4Summing upTry t
10、o help the students draw the following conclusions.1The main structure of the emphasized sentences is “It is/was.that/who.”2The emphasized sentences can be used to emphasize the subject，object and adverbial(including adverbial of time and adverbial of place)3When we want to emphasize the subject，obj
11、ect and adverbial，we only need to put these parts between “it is/was” and “that/who”，the rest part shouldnt be changed.4When the emphasized part is a person we can use both the structure “It is/was.that.” and the structure “It is/was.who.”When the emphasized part is not a person we can only use the
12、structure “It is/was.that.”Step 5Grammar practiceAsk students to do the following exercises：1Change the following sentences into emphasized sentences.(To emphasize the underlined parts.)来源:学科网(1)Peter lent us the money.(2)They want money.来源:学科网来源:学+科+网(3)All this happened on_Monday.来源:学.科.网(4)I didn
13、t hear from her until_last_summer.(5)Why does everyone think I am narrowminded?Suggested answers：(1)It was Peter who lent us the money.(2)It is money that they want.(3)It was on Monday that all this happened.(4)It was not until last summer that I heard from her.(5)Why is it that everyone thinks I am
14、 narrowminded?The last two may be a little difficult for the students.Help them to get the correct answer.2Do Exercise 2 in Discovering useful structures on Page 29.3Do the exercises in Using Structures on Page 64.First ask students to do the exercises individually，and then let them discuss and chec
15、k their answers with their partners，and finally give them correct answers and deal with any problems they might meet.Step 6Getting more about the grammarShow the following sentences to the students and ask them to find what the similarity of these sentences is.Suggested answers：In these three sentences，the underlined parts are all clausesa subject clause and two adverbial clauses.That is to say，the emphasized sentence can not only b
