英语高二下北师大版Unit22《Environmental Protection》(Lesson 1)课件
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| 名称 | 英语高二下北师大版Unit22《Environmental Protection》(Lesson 1)课件 |  | |
| 格式 | zip | ||
| 文件大小 | 773.7KB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 北师大版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2013-03-11 21:02:00 | ||
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课件43张PPT。LESSON 1 GLOBAL WARMING 1 Global Warming In groups discuss what you know about global warming.
Look at the pictures to get ideas.Traffic Jam Factory The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Without these gases, heat would escape back into space and Earth’s average temperature would be about 60oF colder. Because of how they warm our world, these gases are referred to as greenhouse gases. The Greenhouse EffectThe Greenhouse Effect Without this greenhouse heating, the Earth's average temperature would be only about -73 C
(-100 F); even the oceans would be frozen under such conditions,such as the Moon and the Mars. MarsMoonWhat Are Greenhouse Gases? Some greenhouse gases occur naturally in the atmosphere, while others result from human activities. Naturally occuring greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases . Owing to the rise in atmospheric carbon dioxide caused by modern industrial societies' widespread combustion of fossil fuels (coal, oil, and natural gas), the greenhouse effect on Earth may be intensified and long-term climatic changes may result. When faced with this question,
as individuals should recognize that collectively we can make a difference. What difference can we make?Individual Taking action on global warming (or climate change) is similar. In some cases, it only takes a little change in lifestyle and behavior to make some big changes in greenhouse gas reductions. For other types of actions, the changes are more significant. When that action is multiplied by the 1.3 billion people in the China. Or the 6 billion people worldwide, the savings are significant. Taking public transport like buses
can reduce greenhouse gas emissions And Taking train can also help a reduction
of greenhouse gas. The recycling symbol Buy the recycled productsRecycled productsRecycling the bottlesYour glass bottles could
be recycled into house
insulation, plastic bottles
could be made into a
cosy fleece jacket.Paper recycling your paper could become
part of a road or race-trackusing low-flow shower headsbuying energy-efficient
light bulbsreplacewithVocabulary Use the expressions in the box in the correct form to complete the sentences.
beyond our control, pump into, as a result of, in large quantities, refer to, speed up
1 Water was the fish pond from the river.
2 We all need to to finish in time!
pumped intospeed up3 There is nothing more we can do .the situation is
now .
4 the accident, she is now afraid of water.
5 The scientist global warming at least three times in his speech.
6 The factory was producing greenhouse
gases .beyond our controlAs a result ofreferred toin large quantitiesGrammar : ReportingWhat verbs are used in the text to report these statements?
Example 1 = to report that
1 Human beings are causing changes in the Earth’s climate.2 Gases pumped into the Earth’s atmospere have been
speeding up the process of global warming.to report that to claim that 5 Global warming will cause dramatic climate changes including more frequent floods ,heat waves, and droughts.3 Global warming could be one of the biggest
environmental problems facing the 21st century.
to believe that to insist that 4 Global warming is mostly due to human activities.to warn that Look at these sentences from the text and explain why the underlined verbs are not the same tense as the reporting verbs.1 Recent report from the IPCC warned that global warming will cause dramatic climate changes.2 Scientist found that the temperature of the Earth
is controlled by greenhouse gases.Because it is in the futureBecause it is a general truthMatch the sentences with appropriate reporting verbs from the list. Then write the reported sentences. admit,boast ,forbid ,inquire,invite,order,suggest,
threaten
1 We’ll close credit lines if you don’t reduce carbon dioxide emissions.They threatened to close the credit lines if we don’t
reduce Cabon dioxide emissions.3 Why don’t you drop in tonight?2 OK, you are right,some poisionous chemical did escape
into the atmospere.They admitted that some poisonous chemicals had
escaped into the atmosphere.He /She/They invited me to drop in tonight.He /She/They ordered me to stand up immediately.He /She/They forbade us to use our dictionaries
during the test.He /She boasted that he/she is the best student in
that school.4 Stand up immediately!5 I’m the best student in this school !6 You can’t use your dictionaries during the test.8 Is the bus service running according to the timetable today?He /She/They suggested having/that we should
have a cup of tea.I/He /She/They/We inquired if the bus service
was running according to the timetable today.7 Shall we have a cup of tea?10 use the following verbs to report the two dialogues.admit ,advise,promise ,warn
Tom: I don’t think you should play the game today,John.
John: You’re right.I’m still a little bit ill, but I promise I won’t overdo it.
Tom advised John not to play the game today.John admitted that Tom was right because he was
a little bit ill. He promised not to overdo it.Tom: Be careful.If you yun around too much in this
Weather you may get another attack of the “flu”.
Tom warned John to be careful because if he ran
aound too much in the weather he might get another
attack of the flu.b) accuse , beg, complain,deny,explain,refuse
Daughter:Mum,please, will you buy me this CD?
I’ve always wanted it .
Mother: Sarah ,you know I can’t afford it. Why do you always ask me to buy you expensive things?
Sarah begged her mother to buy her the CD
because she always wanted it.Her mother refused and explained that she couldn’t
afford it. She complained that her daughter was
always asking her to buy her expensive thingsThe daughter denied this. She accused her mother of never buying her the things she wanted but only the things her mother liked.Daughter: That’s not ture. You just never buy me things
that I want ,only those that you like!Language in use 11 Report the following statements that you heard at 9 a.m. this morning.Do you need to change the tense?
1 “Women live longer than men.”
I heard that …
2 “ Our galaxy contains several thousand million stars.”
An astronomer announed that …I heard that women live longer than men.An astronomer announed that our galaxy contains
several thousand million stars. 3 “The 2016 Olympics will be organised in Africa.”
A sports expert said that …
4 “This room is too hot.”
Jonathan complained that …
5 “The hurricane has killed 9 people.”
The newspaper reported…A sports expert said that the 2016 Olympics will
be organised in Africa.Jonathan complained that this room was too hot. The newspaper reported the hurricane had
killed 9 people.Grammar: Reporting verbsWhen using reported speech, most students learn to use "say" ; "tell" and " ask" :
e.g.
" I am going to the shop."
He said (that) he was going to the shop.
"Sit down and open your books."
She told us to sit down and open our books.
"Will you come with us tomorrow?"
He asked me if I would go with them the following day.A native speaker of English, however, will often use reporting verbs other than just say, tell and ask. Compare the following:"I didn't do it!"
He said that he hadn't done it.
He denied that he had done it OR He denied doing it.
"I'll bring the book back tomorrow."
She said that she would bring the book back the following day.
She promised to bring the book back the following day. "Please will you think about it some more?"
He asked me if I would think about it some more.
He begged me to think about it some more.
"First you should put the money in the slot and then you should press the button."
She said that I should first put the money in the slot and then press the button.
She explained what I should do. Notice that different reporting verbs are followed by different structures, i.e.
deny + that-clause OR
deny + -ing form
promise + infinitive
beg + object + infinitive However, there are a number of other reporting verbs which can more accurately describe what someone has said. These verbs take a variety of structures. The following list gives you reporting verbs in various categories based on sentence structure. Notice that a number of verbs can take more than one form. (1) verb + object + infinitive advise ;encourage ; invite ; remind ; warn
Examples:
1 Jack encouraged me to look for a new job.
2 They invited all their friends to attend the presentation.(2) verb + infinitive agree ;decide ; offer ; promise ; refuse ; threaten
Examples:
She offered to give him a lift to work.
My brother refused to take no for an answer.
(3) verb + (that) admit ; agree ; decide ; deny ; explain ; insist ; promise ; recommend ; suggest
Examples:
Tom admitted (that) he had tried to leave early.
She agreed (that) we needed to reconsider our plans.
(4) verb + gerund Deny ; recommend ; suggest
Examples:
He denied having anything to do with her.
Ken suggested studying early in the morning.
(5) verb + object + preposition + gerund accuse ; blame ; congratulate
Examples:
They accused the boys of cheating on the exam.
She blamed her husband for missing the train.
(6) verb + preposition + gerund apologize ; insist
Examples:
He apologized for being late.
She insisted on doing the washing up.
Look at the pictures to get ideas.Traffic Jam Factory The greenhouse effect is the rise in temperature that the Earth experiences because certain gases in the atmosphere (water vapor, carbon dioxide, nitrous oxide, and methane, for example) trap energy from the sun. Without these gases, heat would escape back into space and Earth’s average temperature would be about 60oF colder. Because of how they warm our world, these gases are referred to as greenhouse gases. The Greenhouse EffectThe Greenhouse Effect Without this greenhouse heating, the Earth's average temperature would be only about -73 C
(-100 F); even the oceans would be frozen under such conditions,such as the Moon and the Mars. MarsMoonWhat Are Greenhouse Gases? Some greenhouse gases occur naturally in the atmosphere, while others result from human activities. Naturally occuring greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases . Owing to the rise in atmospheric carbon dioxide caused by modern industrial societies' widespread combustion of fossil fuels (coal, oil, and natural gas), the greenhouse effect on Earth may be intensified and long-term climatic changes may result. When faced with this question,
as individuals should recognize that collectively we can make a difference. What difference can we make?Individual Taking action on global warming (or climate change) is similar. In some cases, it only takes a little change in lifestyle and behavior to make some big changes in greenhouse gas reductions. For other types of actions, the changes are more significant. When that action is multiplied by the 1.3 billion people in the China. Or the 6 billion people worldwide, the savings are significant. Taking public transport like buses
can reduce greenhouse gas emissions And Taking train can also help a reduction
of greenhouse gas. The recycling symbol Buy the recycled productsRecycled productsRecycling the bottlesYour glass bottles could
be recycled into house
insulation, plastic bottles
could be made into a
cosy fleece jacket.Paper recycling your paper could become
part of a road or race-trackusing low-flow shower headsbuying energy-efficient
light bulbsreplacewithVocabulary Use the expressions in the box in the correct form to complete the sentences.
beyond our control, pump into, as a result of, in large quantities, refer to, speed up
1 Water was the fish pond from the river.
2 We all need to to finish in time!
pumped intospeed up3 There is nothing more we can do .the situation is
now .
4 the accident, she is now afraid of water.
5 The scientist global warming at least three times in his speech.
6 The factory was producing greenhouse
gases .beyond our controlAs a result ofreferred toin large quantitiesGrammar : ReportingWhat verbs are used in the text to report these statements?
Example 1 = to report that
1 Human beings are causing changes in the Earth’s climate.2 Gases pumped into the Earth’s atmospere have been
speeding up the process of global warming.to report that to claim that 5 Global warming will cause dramatic climate changes including more frequent floods ,heat waves, and droughts.3 Global warming could be one of the biggest
environmental problems facing the 21st century.
to believe that to insist that 4 Global warming is mostly due to human activities.to warn that Look at these sentences from the text and explain why the underlined verbs are not the same tense as the reporting verbs.1 Recent report from the IPCC warned that global warming will cause dramatic climate changes.2 Scientist found that the temperature of the Earth
is controlled by greenhouse gases.Because it is in the futureBecause it is a general truthMatch the sentences with appropriate reporting verbs from the list. Then write the reported sentences. admit,boast ,forbid ,inquire,invite,order,suggest,
threaten
1 We’ll close credit lines if you don’t reduce carbon dioxide emissions.They threatened to close the credit lines if we don’t
reduce Cabon dioxide emissions.3 Why don’t you drop in tonight?2 OK, you are right,some poisionous chemical did escape
into the atmospere.They admitted that some poisonous chemicals had
escaped into the atmosphere.He /She/They invited me to drop in tonight.He /She/They ordered me to stand up immediately.He /She/They forbade us to use our dictionaries
during the test.He /She boasted that he/she is the best student in
that school.4 Stand up immediately!5 I’m the best student in this school !6 You can’t use your dictionaries during the test.8 Is the bus service running according to the timetable today?He /She/They suggested having/that we should
have a cup of tea.I/He /She/They/We inquired if the bus service
was running according to the timetable today.7 Shall we have a cup of tea?10 use the following verbs to report the two dialogues.admit ,advise,promise ,warn
Tom: I don’t think you should play the game today,John.
John: You’re right.I’m still a little bit ill, but I promise I won’t overdo it.
Tom advised John not to play the game today.John admitted that Tom was right because he was
a little bit ill. He promised not to overdo it.Tom: Be careful.If you yun around too much in this
Weather you may get another attack of the “flu”.
Tom warned John to be careful because if he ran
aound too much in the weather he might get another
attack of the flu.b) accuse , beg, complain,deny,explain,refuse
Daughter:Mum,please, will you buy me this CD?
I’ve always wanted it .
Mother: Sarah ,you know I can’t afford it. Why do you always ask me to buy you expensive things?
Sarah begged her mother to buy her the CD
because she always wanted it.Her mother refused and explained that she couldn’t
afford it. She complained that her daughter was
always asking her to buy her expensive thingsThe daughter denied this. She accused her mother of never buying her the things she wanted but only the things her mother liked.Daughter: That’s not ture. You just never buy me things
that I want ,only those that you like!Language in use 11 Report the following statements that you heard at 9 a.m. this morning.Do you need to change the tense?
1 “Women live longer than men.”
I heard that …
2 “ Our galaxy contains several thousand million stars.”
An astronomer announed that …I heard that women live longer than men.An astronomer announed that our galaxy contains
several thousand million stars. 3 “The 2016 Olympics will be organised in Africa.”
A sports expert said that …
4 “This room is too hot.”
Jonathan complained that …
5 “The hurricane has killed 9 people.”
The newspaper reported…A sports expert said that the 2016 Olympics will
be organised in Africa.Jonathan complained that this room was too hot. The newspaper reported the hurricane had
killed 9 people.Grammar: Reporting verbsWhen using reported speech, most students learn to use "say" ; "tell" and " ask" :
e.g.
" I am going to the shop."
He said (that) he was going to the shop.
"Sit down and open your books."
She told us to sit down and open our books.
"Will you come with us tomorrow?"
He asked me if I would go with them the following day.A native speaker of English, however, will often use reporting verbs other than just say, tell and ask. Compare the following:"I didn't do it!"
He said that he hadn't done it.
He denied that he had done it OR He denied doing it.
"I'll bring the book back tomorrow."
She said that she would bring the book back the following day.
She promised to bring the book back the following day. "Please will you think about it some more?"
He asked me if I would think about it some more.
He begged me to think about it some more.
"First you should put the money in the slot and then you should press the button."
She said that I should first put the money in the slot and then press the button.
She explained what I should do. Notice that different reporting verbs are followed by different structures, i.e.
deny + that-clause OR
deny + -ing form
promise + infinitive
beg + object + infinitive However, there are a number of other reporting verbs which can more accurately describe what someone has said. These verbs take a variety of structures. The following list gives you reporting verbs in various categories based on sentence structure. Notice that a number of verbs can take more than one form. (1) verb + object + infinitive advise ;encourage ; invite ; remind ; warn
Examples:
1 Jack encouraged me to look for a new job.
2 They invited all their friends to attend the presentation.(2) verb + infinitive agree ;decide ; offer ; promise ; refuse ; threaten
Examples:
She offered to give him a lift to work.
My brother refused to take no for an answer.
(3) verb + (that) admit ; agree ; decide ; deny ; explain ; insist ; promise ; recommend ; suggest
Examples:
Tom admitted (that) he had tried to leave early.
She agreed (that) we needed to reconsider our plans.
(4) verb + gerund Deny ; recommend ; suggest
Examples:
He denied having anything to do with her.
Ken suggested studying early in the morning.
(5) verb + object + preposition + gerund accuse ; blame ; congratulate
Examples:
They accused the boys of cheating on the exam.
She blamed her husband for missing the train.
(6) verb + preposition + gerund apologize ; insist
Examples:
He apologized for being late.
She insisted on doing the washing up.