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1、Unit 4 Global warming Languages: Grammar The Emphasis Teachingaims:1. Languages aimsa. Show the usagesoftheEmphasissentences to studentsb. GetstudentstoknowhowtousetheEmphasissentences. 2.Ability aims Enable students to use theEmphasissentences intheircompositionsanddailycommunication correctly and
2、properly.3. Emotion aims To stimulate students interests in grammar learningImportantpoints:Mastertheusagesoftheemphasisstructures:1.Itis(was)+被强调部分+that(who)+其余部分2.do/does/did+动词原形+Difficultpoints:1.HowtocontrasttheEmphasissentences and Subjective clause.2.HowtousetheEmphasissentencesindifferentsit
3、uations.Teachingmethods:1. TheEnglishFour-in-oneTeachingMethod.2. The Questions-and-Answers ActivityTeaching tools:1. the multimedia2. a computer and courseware.Teaching proceduresStep1: Revision/lead-in1. Discussion:Show the sentence: To their credit the four countries do work together in some area
4、s (E g: the currency and international relations), But they still have very different institutions. 值得赞扬的是，这四个国家的确在一些方面共同合作，（例如在货币和国际关系方面），但是有些制度仍然区别很大。句中的“do work ”为强调结构,用来强调谓语动词，即：do/does/did+动词原形2. Show the new lesson on P29To learn the two sentences with students together and then to sum up the
5、structure Itis(was)+被强调部分+that(who)+其余部分Step2. Learning the new grammar1. Translate the following sentences and sum up the grammarrulesa. It is Johns quick action and knowledge of fist aid that saved Ms Slades life.b. It is my mother who often tells me to be careful.c. It was not until he took off h
6、is sunglass that I recognized himd. It is human activity that has caused this global warminge. It is only when the disease has progressed to AIDS that a person begins to look sick.v It is /was +被强调部分+that/who/whom +句子其它剩余成分 (这个句型用来强调除谓语以外的各种句子成分,被强调部分必须放在it is/was 后面，如果强调的部分是人，可以who/whom 来代替that. “I
7、t”引导句子无实际意义。) 3. To drill the grammar rulesTranslate：杰克昨天在公园遇到你的妹妹。v Jack met your sister in the park yesterday. ( ask students to analyses the sentence)Task1:强调主语: 强调宾语:强调地点状语:强调时间状语:4. To sum up key points (1).在此结构中, be 动词必须是单数，因为主语是it ；而且时态必须与原句时态一致；连接词必须是that（指人时也可以是who/ whom)(2).主谓一致 ,在强调句型中，被强
8、调部分作主语时，that引导剩余部分谓语动词在人称和数上必须与主语保持一致。E g: It is your father that/whom is wrong this time.It is John and his parents that/who have come to China.(3).人称照应：在强调句型中，若强调主语，代词用主格，若强调宾语，代词用宾格。E g: It is they who will attend the wedding. It was her whom I saw in the street just now(4) 否定句，疑问句形式 ?Task2: chan
9、ge the sentences into否定句：It isnt / was t +被强调部分+that+ 一般问句：was/is it +被强调部分+that+- 特殊问句：疑问词+is/was +it +that+-It was Jack that/who met your sister in the park yesterday.It was your sister that /whom Jack met in the park yesterday. It was in the park that Jack met your sister yesterday .It was yester
10、day that Jack met your sister in the park. (5)如何判断强调句型?e g: It is the true that he once went to America. It was at 8 oclock that he came back.通常判断是否是强调句的标志是：把强调结构“it is /was +-+that 去掉，若句子仍然成立，就是强调句，否则不是. (6).常见固定句型： It was not until+时间状语/状语从句+that-(not和until一起强调） It was because +从句+that+ - It was b
11、ecause of +名词+that +- It was +介词+时间点/时间段+that+-E g: It was not until his father came that the boy began to do his homework. It was not until 12 oclock that he arrived home. It was because he was careless that he lost his job. It was because of his carelessness that he lost his job. It was at 7:00 am
12、 that the plane took off. It was for three days that he stayed here. It 引导的强调句不能用来强调条件状语从句和让步状语从句，可强调because 引导的原因状语从句，却不能强调as/since 引导的原因状语从句，可强调so that 引导的目的状语从句,却不能强调so that 引导的结果状语从句。Step3.Do exercise 1. It was _ the city was liberated _ his father was born. A. when; that B. that ; when C. that;
13、 that D. when; when2. It was _ the next morning that I began to think about where I was going. A. before B. after C. when D. not until3. It _ her brother _ she will borrow the money. A. is fromthat B. is who C. iswhom D. isthat4. It _ on the telephone that I spoke to my wife in New Zealand. A. is B.
14、 was C. are D. were5. It might have been John _ bought a new ring for Lily yesterday afternoon.A. A. therefore B. who B. C. which D. so that6. It was yesterday_ I saw him in our school. A. when B. which C. on which D. that7. It was in the village _ he grew up. A. where B. which C. in which D. thatStep4: Homework1. Ask students to finish Exercise P29 Part2 after class.2. Ask students to sum up the usages of Emphasis after class.
