人教英语选修六素养课件：Unit 4 Global warming 4 Section Ⅳ Grammar
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人教版英语选修六Unit 4 Global Warming(Reading)课件(共21张PPT)
Greenhouse effect
Careful reading
Task Two
Read para.6-7 carefully and answer the following questions.
1. What is Dr. Foster’s opinion about global warming? 2.What is Hambley’s opinion about global warming?
Careful reading
Task One
Read para.2-5 carefully and answer the following questions.
1.What are the two graphs about? 2.What is the cause of global warming? 3. What in the atmosphere traps the heat from the sun and warms the earth?
Much brighter than tomorrow And if you really try
You’ll find there’s no need to cry In this place you’ll feel
There’s no hurt or sorrow
Careful reading
1.What are the two graphs about?
Graph 1 shows the temperature increase of one degree Fahrenheit between 1860 to 2000.
Careful reading
1.What are the two graphs about?
新人教版高中英语选修6Unit4 Global warming(ppt)
Task 1. Ss in pairs, talk about the greenhouse and answer the following questions:
What is a greenhouse? How does it work? What do you think greenhouse gases do?
9. Gorge Hambley is worried about the effects of carbon dioxide on plant growth. F 10. It is clear what the effects of global warming will be. F
Task 4. Ss read the passage again and try to divide the whole passage into several parts and summarize the main idea for each part. While reading, pay attention to the writing skills.
Task 2. Predicting: Ss read the title and predict what the text will tell.
Task 3: Ss read the passage and judge the following sentences: true of false. 1. The temperature last century didn’t increase much. F 2. Everyone believes that global warming is caused by the activities of humans. F 3. Janice Foster believes that global warming is caused by burning fossil fuels. T 4. Natural gas is greenhouse gas. F 5. Carbon dioxide is a byproduct of burning fossil T fuels.
What is a greenhouse? How does it work? What do you think greenhouse gases do?
9. Gorge Hambley is worried about the effects of carbon dioxide on plant growth. F 10. It is clear what the effects of global warming will be. F
Task 4. Ss read the passage again and try to divide the whole passage into several parts and summarize the main idea for each part. While reading, pay attention to the writing skills.
Task 2. Predicting: Ss read the title and predict what the text will tell.
Task 3: Ss read the passage and judge the following sentences: true of false. 1. The temperature last century didn’t increase much. F 2. Everyone believes that global warming is caused by the activities of humans. F 3. Janice Foster believes that global warming is caused by burning fossil fuels. T 4. Natural gas is greenhouse gas. F 5. Carbon dioxide is a byproduct of burning fossil T fuels.
选修6 unit4 Global Warming课件
List two different attitudes
Part four: ( para7 )
Slusion .
Fast Reading
Read the text fast
and answer the questions on page 27 Ex1
in the article?
They are Dr. Janice Foster,
Charles Keeling and George Hambley.
3. What do they think about global warming? Do they agree with one another? They don't agree with each other. Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences.
F
3.Janice Foster believes that she can measure the future global rise in temperatrue
T
4. The rise in carbon dioxide is causing a
steady in crease in global warming.
5. What is the main topic of the article?
Global warming
Page 27 Ex.2 T or F
Part four: ( para7 )
Slusion .
Fast Reading
Read the text fast
and answer the questions on page 27 Ex1
in the article?
They are Dr. Janice Foster,
Charles Keeling and George Hambley.
3. What do they think about global warming? Do they agree with one another? They don't agree with each other. Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences.
F
3.Janice Foster believes that she can measure the future global rise in temperatrue
T
4. The rise in carbon dioxide is causing a
steady in crease in global warming.
5. What is the main topic of the article?
Global warming
Page 27 Ex.2 T or F
人教版英语全国通用版选修6 Unit 4 Global warming 课件
9．graph n. 图表；坐标图；曲线图 10.motor n. 发动机
11．can n. 容器；罐头 12.microwave n. 微波炉；微波 13．nuclear adj. 核的；核能的；原子核的
高考与教材 1.(2019·全国卷Ⅱ)This is quite important, because it is directly related to your commitment (commit)． 2．(2019·江苏卷)So scientists are trying their best to save the species from going out of existence (exist)． 3．(2018·全国卷Ⅰ)The researchers also explored what would happen if consumers (consume) replaced old products with new electronics.
6．turn off 关掉 7．die out 灭亡；逐渐消失 8．tear down 拆掉；拆毁 9．save energy 节约能源 10．get damaged 遭到破坏
1．It is necessary for us to protect our environment. 对我们来说，保护环境是必要的。 2．Only in this way can we live in harmony with the animals. 只有这样我们才能与动物和谐相处。 3．Water resources have become so badly polluted that some of the water is unfit to drink or to use. 水资源已经被污染得如此严重，以至于一些水已经不适合饮 用或使用。
人教版高中英语选修六Unit 4《Global Warming》(Using Language)课件
② 根据自己预习时理解过的逻辑结构抓住老师的思路。老师讲课在多数情况下是根据教材本身的知识结构展开的，若把自己预习时所理解过的知识 逻辑结构与老师的讲解过程进行比较，便可以抓住老师的思路。
③ 根据老师的提示抓住老师的思路。老师在教学中经常有一些提示用语，如“请注意”、“我再重复一遍”、“这个问题的关键是····”等等，这些 用语往往体现了老师的思路。来自：学习方法网
老师上课都有一定的思路，抓住老师的思路就能取得良好的学习效果。在上一小节中已经提及听课中要跟随老师的思路，这里再进一步论述听课时如何 抓住老师的思路。
① 根据课堂提问抓住老师的思路。老师在讲课过程中往往会提出一些问题，有的要求回答，有的则是自问自答。一般来说，老师在课堂上提出的问 题都是学习中的关键，若能抓住老师提出的问题深入思考，就可以抓住老师的思路。
④ 紧跟老师的推导过程抓住老师的思路。老师在课堂上讲解某一结论时，一般有一个推导过程，如数学问题的来龙去脉、物理概念的抽象归纳、语 文课的分析等。感悟和理解推导过程是一个投入思维、感悟方法的过程，这有助于理解记忆结论，也有助于提高分析问题和运用知识的能力。
⑤ 搁置问题抓住老师的思路。碰到自己还没有完全理解老师所讲内容的时候，最好是做个记号，姑且先把这个问题放在一边，继续听老师讲后面的 内容，以免顾此失彼。来自：学习方法网
⑥ 利用笔记抓住老师的思路。记笔记不仅有利于理解和记忆，而且有利于抓住老师的思路。
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③ 根据老师的提示抓住老师的思路。老师在教学中经常有一些提示用语，如“请注意”、“我再重复一遍”、“这个问题的关键是····”等等，这些 用语往往体现了老师的思路。来自：学习方法网
老师上课都有一定的思路，抓住老师的思路就能取得良好的学习效果。在上一小节中已经提及听课中要跟随老师的思路，这里再进一步论述听课时如何 抓住老师的思路。
① 根据课堂提问抓住老师的思路。老师在讲课过程中往往会提出一些问题，有的要求回答，有的则是自问自答。一般来说，老师在课堂上提出的问 题都是学习中的关键，若能抓住老师提出的问题深入思考，就可以抓住老师的思路。
④ 紧跟老师的推导过程抓住老师的思路。老师在课堂上讲解某一结论时，一般有一个推导过程，如数学问题的来龙去脉、物理概念的抽象归纳、语 文课的分析等。感悟和理解推导过程是一个投入思维、感悟方法的过程，这有助于理解记忆结论，也有助于提高分析问题和运用知识的能力。
⑤ 搁置问题抓住老师的思路。碰到自己还没有完全理解老师所讲内容的时候，最好是做个记号，姑且先把这个问题放在一边，继续听老师讲后面的 内容，以免顾此失彼。来自：学习方法网
⑥ 利用笔记抓住老师的思路。记笔记不仅有利于理解和记忆，而且有利于抓住老师的思路。
2019/8/11
最新中小学教学课件
164
ቤተ መጻሕፍቲ ባይዱ 谢谢欣赏！
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165
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人教版选修6精品课件Unit 4 Global Warming-Global Warming
Global warming may be faster than UN predicted
Australia's CSIRO's atmospheric research unit has found the world is warming faster than predicted by the United Nations' top climate change body, with harmful emissions exceeding worstcase estimates.
An enormous iceberg breaks off the Knox Coast in the Australian Antarctic Territory, January 11, 2008.
A turquoise lake forms from melting snow near Cape Folger on the Budd Coast in the Australian Antarctic Territory, January 11, 2008.
A deep crevasse forms in the iceshelf as an enormous iceberg breaks off the Knox Coast in the Australian Antarctic Territory on Janebergs surrounded by ice floe drift in Vincennes Bay in the Australian Antarctic Territory January 11, 2008.
Giant tabular icebergs surrounded by ice floe drift in Vincennes Bay in the Australian Antarctic Territory January 11, 2008.
Australia's CSIRO's atmospheric research unit has found the world is warming faster than predicted by the United Nations' top climate change body, with harmful emissions exceeding worstcase estimates.
An enormous iceberg breaks off the Knox Coast in the Australian Antarctic Territory, January 11, 2008.
A turquoise lake forms from melting snow near Cape Folger on the Budd Coast in the Australian Antarctic Territory, January 11, 2008.
A deep crevasse forms in the iceshelf as an enormous iceberg breaks off the Knox Coast in the Australian Antarctic Territory on Janebergs surrounded by ice floe drift in Vincennes Bay in the Australian Antarctic Territory January 11, 2008.
Giant tabular icebergs surrounded by ice floe drift in Vincennes Bay in the Australian Antarctic Territory January 11, 2008.
英语选修六 4.1《Unit4 Global warming》(精品课件)
1 Coal is one of the cheapest types of _________. fuel
2 You must drink a large _______________ of water. quantity
3 She enjoyed w________________ fame afer her new widespread film came out.
6.An eclipse of the moon is one of the rare
__________________ phenomena （现象）
7 Not everyone can afford journeys to __________ space. outer
8.The little girl drank four _______ cans (罐) of beer, which
every year, we won’t run out of it for centuries.
三、词语派生 用所给词的适当形式填空。
1 Prices are rising ______________(steady) steadily
2. He is old enough to be _______________of his parents independent so he wants _______________ independence from them.( dependence) 3. The president made a ____________ statement （state）of his aims.
14___________ [I5lektrIk(E)l]adj. 电的； outer
2 You must drink a large _______________ of water. quantity
3 She enjoyed w________________ fame afer her new widespread film came out.
6.An eclipse of the moon is one of the rare
__________________ phenomena （现象）
7 Not everyone can afford journeys to __________ space. outer
8.The little girl drank four _______ cans (罐) of beer, which
every year, we won’t run out of it for centuries.
三、词语派生 用所给词的适当形式填空。
1 Prices are rising ______________(steady) steadily
2. He is old enough to be _______________of his parents independent so he wants _______________ independence from them.( dependence) 3. The president made a ____________ statement （state）of his aims.
14___________ [I5lektrIk(E)l]adj. 电的； outer
英语Unit 4《Global warming》reading4新人教版选修6 ppt课件
Main ideas of each Writing techniques
part
(Paragraphs 2---3) Illustrate how
Giving examples, using graphs,
global warming comes explanation.
about.
英语Unit 4《Global warming》 reading4新人教版选修6
vapour, but if we add huge 2_q_u_a_n_t_i_ti_e_s_of extra carbon dioxide to the atmosphere by burning fossil fuels, it will cause the 3_g_lo_b_a_l_t_e_m__p_e_r_a_tu_r_e to go up. 英语Unit 4《Global warming》
Reading
英语Unit 4《Global warming》 reading4新人教版选修6
What is the greenhouse made and used for?
英语Unit 4《Global warming》 reading4新人教版选修6
精品资料
英语Unit 4《Global warming》 reading4新人教版选修6
英语Unit 4《Global warming》 reading4新人教版选修6
• What do you think greenhouse gases do? They trap heat from the sun and therefore warm the earth.
英语Unit 4《Global warming》 reading4新人教版选修6
新人教选修六-Unit-4-Global-warming[单元课件
otherwise, or, but等。
e.g. Without your help ( = If we had not had your help), we could not have succeeded． 要是没有你的帮助, 我们是不会成功的。 He felt very tired yesterday, or he would have attended the party． 他昨天很累, 不然他就参加那个聚会了。
二氧化碳量的增加意味着更多的热能滞留在 大气中，结果造成地球温度的上升。
主句是 “It means”; that 引导的是宾语从句， 其中的分词短语 “causing the global temperature to go up”作结果状语。
tend vi.倾向；易于；照顾 vt.照顾；护理 1)tend to/toward sth. 有…的趋势；倾向于
Compared to/with many women, she was indeed very fortunate.
My handwriting can not be compared with my father’s. 我的书法不能与我父亲的相比。 2) 喻为; 比拟 compare…to… 表示“把…比做…(异类 相比, 比喻)” 如：
①用于否定句或疑问句, 后接that引导的宾语 从句。 ②用于肯定句, 一般接whether 或if引导的宾语 从句。 如: I don't doubt _t_h_a_t__ he is telling the truth. 我毫不怀疑他在讲真话。
Do you doubt _t_h_a_t__ he will win the match? 你怀疑他会赢这场比赛吗?
e.g. Without your help ( = If we had not had your help), we could not have succeeded． 要是没有你的帮助, 我们是不会成功的。 He felt very tired yesterday, or he would have attended the party． 他昨天很累, 不然他就参加那个聚会了。
二氧化碳量的增加意味着更多的热能滞留在 大气中，结果造成地球温度的上升。
主句是 “It means”; that 引导的是宾语从句， 其中的分词短语 “causing the global temperature to go up”作结果状语。
tend vi.倾向；易于；照顾 vt.照顾；护理 1)tend to/toward sth. 有…的趋势；倾向于
Compared to/with many women, she was indeed very fortunate.
My handwriting can not be compared with my father’s. 我的书法不能与我父亲的相比。 2) 喻为; 比拟 compare…to… 表示“把…比做…(异类 相比, 比喻)” 如：
①用于否定句或疑问句, 后接that引导的宾语 从句。 ②用于肯定句, 一般接whether 或if引导的宾语 从句。 如: I don't doubt _t_h_a_t__ he is telling the truth. 我毫不怀疑他在讲真话。
Do you doubt _t_h_a_t__ he will win the match? 你怀疑他会赢这场比赛吗?
人教版英语选修六Unit 4 Global Warming reading 课件(共30张PPT)
Reading
Task 1 Skimming
Skim the title: THE EARTH IS BECOMING WARMER
– BUT DOES IT MATTER?
What is the main topic?
A. The earth. B. Global warming.
C. Becoming warmer doesn’t matter.
Coal Oil Natural gas Wind (wind power) Sun (solar energy) Uranium (nuclear energy) Water (hydro-electric
power)
Picture reading
A greenhouse
greenhouse
Now can you connect global warming with greenhouse and think of the relationship between them? Maybe you can understand why we call global warming “greenhouse effect”, right?
T 1.The temperature in the last century didn’t
seem to increase much. Line 2: … it is a rapid increase compared to most natural changes…
T 2.Everyone believes that global warming is
A title Introduction
Body
Conclusion
人教版高中英语选修六《Unit4Globawarming_》课件
Electricity is produced by burning coals.
Oil is refined and made pure.
oil refineries
nuclear power plant
Nuclear energy is converted into electricity.
greenhouse effect
Skim the text and find out the main topic of the article.
Global warming / The warming of the earth.
Read the text and answer the questions:
Do you know how energy is produced?
How manysources of energy can you list?
windmills
Wind energy is used as power to produce electricity.
coal power stations
Choose the best answers.
1.Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1997? A. Dr. Janice Foster. B. Charles Keophie Armstrong
2. What are the names of the three scientists mentioned in the article?
They are Dr. Janice Foster, Charles Keeling and George Hambley.
Oil is refined and made pure.
oil refineries
nuclear power plant
Nuclear energy is converted into electricity.
greenhouse effect
Skim the text and find out the main topic of the article.
Global warming / The warming of the earth.
Read the text and answer the questions:
Do you know how energy is produced?
How manysources of energy can you list?
windmills
Wind energy is used as power to produce electricity.
coal power stations
Choose the best answers.
1.Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1997? A. Dr. Janice Foster. B. Charles Keophie Armstrong
2. What are the names of the three scientists mentioned in the article?
They are Dr. Janice Foster, Charles Keeling and George Hambley.
选修6Unit4GlobalWarming全单元课件
3. If the warming seems hard to slow down no matter what we do, will you keep on saving energy or reduce CO2?
Films recommended:
1. << An inconvenient truth>>
Do you agree?
Energy is necessary in our life.
Sources of energy are endless, so we don’t have to worry about it.
There is no trouble caused when we produce energy from the sources.
Tremsupltesraotfueraech irnecsreeaarscehd?. 2. TAhreythaerey preolsaitteivde?ly /Hdoirwe?ctly related.
3. IWt ihsaut nthceerfutatuinre
℃/℉ ytbeeemtl.ipkeer?ature will
难以忽视的真相
<<the age of stupid>>
愚蠢年代
2. <<The great global warming swindle>>
全球变暖大骗局
Useful language points
Useful phrases
Useful words
1. Consume energy
1. Graph; data
Part2: Does it matter?
Films recommended:
1. << An inconvenient truth>>
Do you agree?
Energy is necessary in our life.
Sources of energy are endless, so we don’t have to worry about it.
There is no trouble caused when we produce energy from the sources.
Tremsupltesraotfueraech irnecsreeaarscehd?. 2. TAhreythaerey preolsaitteivde?ly /Hdoirwe?ctly related.
3. IWt ihsaut nthceerfutatuinre
℃/℉ ytbeeemtl.ipkeer?ature will
难以忽视的真相
<<the age of stupid>>
愚蠢年代
2. <<The great global warming swindle>>
全球变暖大骗局
Useful language points
Useful phrases
Useful words
1. Consume energy
1. Graph; data
Part2: Does it matter?
人教版高中英语选修六课件：Unit 4 Global Warming Reading (共18张PPT)
The Earth Is Becoming Warmer – But Does It Matter?
Fast-reading
What is special about the structure of the passage? How it is organized? It has a title, a first paragraph that is in bold, the main text in two columns, and two graphs.
3.Why are there two quotes?
To support the statement.
The two different viewpoints towards the effects of global warming between Dr. Janice Foster and George Hambley
Unit 4 Global Warming
What are these buildings made of and what is their purpose? Greenhouse
They are made of glass so that plants can grow well in it when it is cold outside.
2. Can you find out the phrases to show different opinions? What are they?
On the one hand…on the other hand… Some are in favor of the view that the increasing temperature will cause catastrophe, while others are opposed to this view.
人教英语选修6课件：Unit+4+Global+warming
②The effects of air pollution range from mild headaches to death. The levels of pollution
found in heavy for traffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes may kill trees and plants and cause metal to corrode.In some of the larger cities, these fumes endanger the live of human beings by contributing to lung diseases and causing early death.
(_F__)
Ⅱ.佳句仿写 1．诚实加苦干有助于成功和幸福。(仿①句) Honesty and hard work ___c_o_n_tr_ib_u_t_e_t_o_s_u_c_c_e_s_s_a_n_d_h_a_p_p_i_n_e_ss___________. 2．这个汽车旅馆的房价每天从三十美元到五十美元不等。(仿②句) The room rate at this motel __r_a_n_g_e_s_fr_o_m__$_3_0__to__$_5_0___ per day.
新课标导学
英语
选修⑥ ·人教版
Unit 4 Global warming
1
学习目标展示
2
背景知识链接
学习目标展示
类别
课程标准要求掌握的项目
话题
Global warming; pollution；the importance of protecting the earth
found in heavy for traffic may cause headaches for loss of clear vision. Wherever coal and oil are used for fuel, fumes may kill trees and plants and cause metal to corrode.In some of the larger cities, these fumes endanger the live of human beings by contributing to lung diseases and causing early death.
(_F__)
Ⅱ.佳句仿写 1．诚实加苦干有助于成功和幸福。(仿①句) Honesty and hard work ___c_o_n_tr_ib_u_t_e_t_o_s_u_c_c_e_s_s_a_n_d_h_a_p_p_i_n_e_ss___________. 2．这个汽车旅馆的房价每天从三十美元到五十美元不等。(仿②句) The room rate at this motel __r_a_n_g_e_s_fr_o_m__$_3_0__to__$_5_0___ per day.
新课标导学
英语
选修⑥ ·人教版
Unit 4 Global warming
1
学习目标展示
2
背景知识链接
学习目标展示
类别
课程标准要求掌握的项目
话题
Global warming; pollution；the importance of protecting the earth
高二人教选修六Unit4 Global warming课件
of extra carbon dioxide to the atmosphere. Therefore, more heat energy is t rapped in
the atmosphere causing the global temperature to _g_o__u_p____.
Para 4. the levels of carbon dioxide have increased greatly over the last 100 to 150 years
This graph shows the carbon dioxide content in the atmosphere increased steadily from 1957 to 1997.
Part II(Para23)
“T”or“F”
1. Everyone believes that global warming is caused by the activities of humans.
_tr_a_p__s the heat from the sun
keeps it from _e_s_c_a__p_in__g
h_e__a_tsthe air up
Fast Reading
1.What are the names of the three scientists mentioned in the article?
Skim paragraph 1:
Who wrote the article? Sophie Armstrong
What is the name of the magazine? Earth Care
.What are the two graphs about?
the atmosphere causing the global temperature to _g_o__u_p____.
Para 4. the levels of carbon dioxide have increased greatly over the last 100 to 150 years
This graph shows the carbon dioxide content in the atmosphere increased steadily from 1957 to 1997.
Part II(Para23)
“T”or“F”
1. Everyone believes that global warming is caused by the activities of humans.
_tr_a_p__s the heat from the sun
keeps it from _e_s_c_a__p_in__g
h_e__a_tsthe air up
Fast Reading
1.What are the names of the three scientists mentioned in the article?
Skim paragraph 1:
Who wrote the article? Sophie Armstrong
What is the name of the magazine? Earth Care
.What are the two graphs about?
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2．强调句型的疑问句式 强调句型的一般疑问句：Is/Was it＋被强调部分＋that/who
＋剩余部分？ 强调句型的特殊疑问句：疑问词＋is/was＋it＋that＋剩余部 分？ ◆ Was it yesterday that you met your old friend in the supermarket? 你是昨天在超市遇到你的老朋友的吗？
4．Miss Li gave the bags to all the students except ___th_e_o_n_es_____ (the ones/ones/some/the others) who had already taken them. 5．It’s obvious that the water in the pot is hotter than _t_h_at__ (one/it/this/that) in the cup. 6 ． She is very knowledgeable and modest, ___w_h_ic_h____ (which/that/it/how) we all know.
(4)It is＋时间＋when ...“当……的时候；时间是……”，when 引导的是时间状语从句，主句中的 it 指时间，表语由具体的时 间充当。试比较： ◆It was ten o’clock when we got home last night. 我们昨晚到家时十点钟了。(状语从句) ◆It was at ten o’clock that we got home last night. ( 强调句型) 我们昨晚是在十点钟到家的。
③It was in the school hall ____________ the tea party was held. 答案：that ④It was not until he got into trouble ____________ he realized that he shouldn’t have been addicted to smoking. 答案：that
强调句型
1．强调句型的构at/who＋剩余
部分。It 仅起引导词的作用，没有实际意义。强调句型的时态 要根据原句的时态而定，即原句为过去的某种时态，强调句中 就用 was；原句为现在或将来的某种时态，强调句中就用 is。
(1)强调主语 ◆It was she that/who didn’t subscribe to your suggestion. 是她不同意你的建议的。 (2)强调宾语 ◆It was Mary that/who I met yesterday. 我昨天遇见的是玛丽。
一个先行词，附上修饰该部分的定语从句，这样整个句子结构 就变得非常复杂。应特别注意不要混淆定语从句的关系词和强 调句型中的 that/who 部分。
◆It was last Spring when they worked together that they began to become good friends. (when 引导的定语从句) 他们是在一起工作的去年春天开始成了好朋友。 ◆It was in the school where they had their schooling that they had a get-together again twenty years later. (where 引导的 定语从句) 二十年后，他们是在曾接受教育的学校里又聚在了一起。
of the mountain.
_____w_h_ic_h→__th_a_t________
3．Li Lin said it were two of his classmates that he met on the
Ⅱ 单句改错
1．Lily said it was on the train to Shanghai where her purse was
stolen.
_____w_h_e_re_→__th_a_t _______
2．It was at ten o’clock in the morning which we got to the top
call. 答案：that ④It is the teacher’s praise _______ contributes to my success. 答案：that
Ⅰ 选词填空 1 ． Once you get into a bad habit, you will find __i_t __ (one/it/this/that) difficult to give it up. 2．__A_s__ (What/This/As/It) is known to us all, Taiwan belongs to China. 3．__I_t__ (This/That/It/One) is reported that more and more adults take online lessons for further study.
(2)It be＋时间段＋before... ◆It may be many years before the situation improves. 这种状况或许要过很多年才能得到改善。 ◆It was some time before I realized the truth. 过了一段时间我才了解到真相。
◆Who was it that knocked on the door just now? 刚才敲门的究竟是谁？ ◆When was it that you lost your luggage? 你究竟什么时候丢的行李？
3．强调句型与定语从句的结合 句式特征为： 在强调句型的被强调部分或其他部分中找出
◆It was in a different way that they played the game. 他们以一种不同的方式进行了这场比赛。(强调方式状语) ◆It was not until he came back that I knew the result. 直到他回来，我才知道结果。(强调 not until 引起的时间状语)
(1)强调时间、地点、原因或方式状语时，一律用 that，不能用 when, where, why 或 how。
(2)强调原因状语从句时，只能是 because 引导的从句，不能是 since, as 或 why 引导的从句。 (3)对 not...until...结构进行强调时，要用 It is/was not until...that... 这一固定句型。由于 not 已经前移，that 后只能用肯定形式。 (4)强调主语时，that 或 who 后的动词的人称和数的变化要与前 面被强调的名词或代词一致。 It was I that/who was to blame. 该受责备的人是我。
Unit 4 Global warming
Section Ⅳ Grammar
it 的用法(Ⅱ)
1．(教材 P26)There is no doubt that the earth is becoming warmer (see Graph 1) and that it is human activity ____________ has caused this global warming rather than a random but natural phenomenon. 答案：that
(3)强调状语 ◆It was on Monday night that I heard a man let out a cry in the next door. 我是在周一的晚上听到隔壁房间有个男子发出了一声尖叫。(强 调时间状语) ◆It was because she was afraid of darkness that she never went out alone at night. 她是因为怕黑才晚上从不一个人出门的。(强调原因状语)
(3)It is time for sb.to do sth./that... ◆It is time for bed. 该睡觉了。 ◆It is time for us to go to bed. ＝It is time that we went to bed. ＝It is time that we should go to bed. 我们该上床睡觉了。
2 ． ( 教 材 P26)It was a scientist called Charles Keeling
____________ made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. 答案：who 3．(教材 P26)They also agree that it is the burning of more and
【即时演练 1】——用适当的关系词填空 ①(2018·天津卷)It was only when the car pulled up in front of our house ____________ we saw Lily in the passenger seat. 答案：that
②It is how you handle each challenge ____________ counts. 答案：that
【即时演练 2】——用适当的关系词填空 ①It is five years _________ my elder brother joined the army. 答案：since ②It was midnight ________ she was woken up by a phone call. 答案：when ③It was at midnight _______ she was woken up by a phone