人教版新課標(biāo)選修六Unit4 Grammar

1、 人教選修6 Unit4 Global Warming GrammarTeaching materialNSEFC Book 6 Unit 4Teaching aimsEnable the students to master the usage of the form it is/was. that. Teaching important pointsHow to enable the students to know the structure and the usage of the form it is/was. that.Teaching difficult pointsHow to

2、 help the students to master the usage of the form it is/was. that.Teaching aidstape recorder, slidesTeaching proceduresStep1 RevisionT: First lets check answers. (slide show)Discovering useful words and expressions. (P28)1. Charles Keeling collected _on the carbon dioxide content in the atmosphere

3、over a forty-year period. He found that the amount of carbon dioxide _ increasing during that time.2. Although we are burning coal in huge _ every year, we won't _ of it for centuries.3. If the amount of greenhouse gases continues to _ we could be facing a global _.4. Many scientists believe tha

4、t global warming has _ through the burning of fossil fuels. They do not think that ignoring the issue is worth the _.5. _ describes weather conditions over a period of years in a particular place.6. The _ of a rising sea level would be widespread flooding.7. The use of energy in Susanna's countr

5、y is low _ the use of energy in the USA.8. The warming of the earth is a _ that causes great concern.9. The _ shows temperature changes during the 20th century.10. One hectare of forest can absorb 23 tons of carbon dioxide _ year.Keys：1.data kept on 2. quantities; run out 3. build up; catastrophe4.

6、come about; risk 5. Climate 6. consequence pared to 8.phenomenon9. graph 10. perAnswer keys for Ex.2 on Page 28:The first graph shows the global _ between _ and _The temperature _ and decreased over this period but on the whole it _ by around _ and its highest in 2000. There was a steady _ in the te

7、mperature during the twenty years after 1980. We can see from the graph that the earth has become _ since early last century.The second graph shows the amount of _in the atmosphere from _ to _ .The carbon dioxide _ steadily over this forty-year period. It went up from 315 to 370 parts _million.Keys：

8、Temperature；1860；2000；increased；rose；1910；increase/rise；warmercarbon dioxide；1957；1997；increase/ went up；perStep2 Grammar強(qiáng)調(diào)句結(jié)構(gòu)?？嫉膹?qiáng)調(diào)句結(jié)構(gòu)是it 引導(dǎo)的句子。一、It is (was) 被強(qiáng)調(diào)部分+ that (who) + 句子其他部分。此結(jié)構(gòu)強(qiáng)調(diào)的成分僅限于主語(yǔ)，賓語(yǔ)和狀語(yǔ)。It is from the sun that we get light and heat.It was not until I had read your letter that I un

9、derstood the true state of affairs.Karl bought Marva a bicycle on her birthday卡爾在瑪瓦生日那天給她買了一輛自行車。  It was Karl thatwho bought Marva a bicycle on her birthday（強(qiáng)調(diào)主語(yǔ)）  It was Marva for who

10、m Karl bought a bicycle on her birthday（強(qiáng)調(diào)間接賓語(yǔ)）  It was a bicycle that Karl bought Marva on her birthday（強(qiáng)調(diào)直接賓語(yǔ)）注意區(qū)別強(qiáng)調(diào)句中的thatwho分句與定語(yǔ)從句：  It was the student thatwho asked the&

11、#160;silly question是一個(gè)學(xué)生問(wèn)了這么一個(gè)愚蠢的問(wèn)題。（分裂句）  He was the student who asked the silly question他就是問(wèn)了這么一個(gè)愚蠢問(wèn)題的學(xué)生。（劃線部分是定語(yǔ)從句） 二、not . until . 的強(qiáng)調(diào)形式: It is not until + 被強(qiáng)調(diào)部分 + that . “直到才”， 主要用于強(qiáng)調(diào)時(shí)間狀語(yǔ)的強(qiáng)調(diào)句型。 We did not begin studying&

12、#160;French until we entered university我們進(jìn)了大學(xué)才開(kāi)始學(xué)法語(yǔ)。 要強(qiáng)調(diào)until we entered university，就成了：  It was not until we entered university that we began studying French _ the 18th century

13、60;that man realized that the whole of the brain was involved in the workings of the mind  A. During B. In C. It was until D. It was not until D對(duì)。直到十八世紀(jì)，人們才意識(shí)到：心理活動(dòng)與整個(gè)大腦有

14、關(guān)。 三、強(qiáng)調(diào)句的疑問(wèn)句句型1.強(qiáng)調(diào)句的一般疑問(wèn)句句型:Is / Was +it +所強(qiáng)調(diào)的部分+that / who/ whom +其它?2.強(qiáng)調(diào)句的特殊疑問(wèn)句句型:特殊疑問(wèn)詞 + is/was it  that / who/ whom+其它 ?Why is it that you hate winter？你究竟為什么不喜歡冬天？  How was it that you missed such a wonderf

15、ul lecture？你怎么會(huì)錯(cuò)過(guò)這么精彩的報(bào)告？  When was it that they went abroad？他們什么時(shí)候出國(guó)的？ 四、判斷強(qiáng)調(diào)句的方法判斷是否是強(qiáng)調(diào)句是，可把 It is / was that 去掉，剩余部分在不增減任何詞的情況下還是一個(gè)完整的句子，那么這種句子是強(qiáng)調(diào)句。It was in the street that I met her father. In the street I met her father. It was because she was ill t

16、hat they didnt ask her to do the job.Because she was ill, they didnt ask her to do the job.Step 3 Exercises一、根據(jù)劃線部分把下列句子變成強(qiáng)調(diào)句。1. Peter lent us the money.2. They want money.3. All this happened on Monday.4. I didnt hear form her until last summer.5.Why does everyone think I am narrow-minded？ Keys：1.

17、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 narrow-minded？二、Multiple choices1. It was in this village _ I was brought up. A. where B. that C. on

18、 which D. which2. Is it the factory_ this type of cars are produced?A. which B. where C. that D. /3. It was _ the old worker came that we _ the experiment.A. until; didnt begin B. not until; beganC. until began D. not until; didnt begin 4. It was in the lab _was taken charge of by Mr. Harris _they did the experiment.A. which，that B. that，which C. that， whom D. which，where5. It was _he di