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人教版 (新课标)Unit 4 Global warming优秀课件ppt
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这是一份人教版 (新课标)Unit 4 Global warming优秀课件ppt，共47页。PPT课件主要包含了average， lots of，Summary，advocate等内容，欢迎下载使用。
Lessn 1 Key wrds and expressins
Task 1 Read and discver
Our earth becmes warmer and warmer.
What is glbal warming?
average: adj. calculated by adding several amunts tgether, finding a ttal, dividing the ttal by the number
It is an increase in the average temperature f the earth’s surface ver time.
1. The greenhuse effect gives the earth’s surface the average temperature f 15 Celsius degree.
2. The average glbal temperature has increased year by year.
Is gbal warming a randm natural phenmenn?
randm: adj. phenmenn: n.
lacking any certain plan r rder
smething that happens in sciety r nature
1.The survey used a randm sample f 200 peple.
2. An earthquake is a natural phenmenn and happens frequently.
Hw has glbal warming cme abut?
Many scientists subscribe t the view that glbal warming has cme abut thrugh the burning f fssil fuels.
1. D yu subscribe t the idea that glbal warming is due t the human’s activities?
v. t agree t, supprt r accept
2. Scientists subscribe t the idea that water plluitn is caused by tns f industrial wastes pured int rivers.
Read and discver:
t receive r btain sth. regularly
1. Many famus peple subscribe t the Hpe Prject t help ut-f-schl children.
v.t dnate mney r things t sb. r sw.
2. I have subscribed t many English magazines and newspapers in rder t braden my mind.
3. D yu knw hw t subscribe t the Web service?
t pay mney regularly t have newspaper r magazines sent
1. Air pllutin has cme abut because lts f harmful gases, dust, and smke enter int the atmsphere.
t happen, especially in a way that is nt planned
Many scientists subscribe t the view that glbal warming has cme abut thrugh the burning f fssil fuels.
2. With the use f electricity, great changes have cme abut in life.
Glbal warming has cme abut because f greenhuse gases.
1. Glbal warming has resulted in many negative effects.
2. The burning f mre and mre fssil fuels has resulted in the increase in carbn dixide.
t have a specified effect n; t lead t; t cause
= Greenhuse gases have resulted in glbal warming.
Greenhuse gases have resulted in glbal warming.
1. Many negative effects have resulted frm glbal warming.
2. The increase in carbn dixide results frm the burning f mre and mre fssil fuels.
t be caused by
=Glbal warming has resulted frm greenhuse gases.
Where d greenhuse gases cme frm?
A large quantity f greenhuse gases cmes frm burning quantities f fssil fuels which prvide the energy that we cnsume every day.
v. t use energy ,clectricity, time etc.
1. Industrialized cuntries cnsume resurces in huge quantities.
2. Sme f the mst efficient refrigeratrs cnsume 70 percent less electricity than traditinal mdels.
1. Grace was cnsumed with curisity abut her new neighbur.
2. The fire cnsumed the building.
3. In rder t survive, human beings need t cnsume fd and water.
v. (frmal) t eat r drink sth.
v. t cmpletely destry sth
v. t fill sb with a strng feeling
A large quantity f greenhuse gases cmes frm burning quantities f fssil fuels which prvide the energy that we cnsume every day.
1. The prblem begins when we add huge quantities f extra carbn dixide t the atmsphere by burning fssil fuels.
2. My brther bught a large quantity f bks.
1. The bk shp sld a quantity f /quantities f bks.
2. The factry releases a quantity f / quantities f CO2 every day.
3. Large quantities f CO2 are prduced when burning fssil fuels.
4. A large quantity f CO2 is prduced when burning fssil fuels.
a quantity f / quantities f + cuntable nuns / uncuntable nun
Hw d greenhuse gases warm the earth?
When greenhuse gases cntinue t build up in the air, they tend t absrb heat frm the sun and therefre warm the earth.
= be likely t d
1. When it cmes t greenhuse gases, the public tends t fcus n carbn dixide.
2. Pllutin tends t increase in winter as cal-burning is still the main surce f heat.
1. The nurse is skillfully tending t the patient nw.
t lk after / take care f sb. / sth.
3. Lw carbn-ecnmy is the new tendency f ecnmy develpment in the present sciety.
n. a general directin in which smething tends t mve.
2. The ice cnditins are mild since the 1990s, which is related t the tendency f the glbal warming.
What negative effects will glbal warming result in?
If temperature cntinues ging up, it will result in many negative cnsequences like severe strms, flds, drughts, famines etc.
n. an effect r a result f sth that has happened;
1. The disappearance f ice in Antarctica will bring seriuscnsequences t the glbal climate.
2. Air pllutin can have serius cnsequences.
If temperature cntinues ging up, it will result in many catastrphes like severe strms, flds, drughts, famines etc.
n. a disaster r an unexpected event that causes great suffering
1. There are many natural catastrphes ccurring in nature.
2. Catastrphes will cme if mankind cntinues t pllute the envirnment.
Flda large amunt f water cvering an area
Drughta lng perid f time when there is little r n rain
Famine a severe shrtage f fd resulting in starvatin and death
What can we d abut glbal warming?
There is n dubt that we can’t put up with it any lnger because we can take a range f measures t reduce it.
There is n dubt that It is certain It is t be sure that...
1. There is n dubt that human activities result in glbal warming.
2. There is n dubt that the average temperature f the earth will rise year by year.
There is n dubt that we can’t put up with it any lnger becauseWe can take a range f measures t reduce it. We can als advcate imprvement in the way we use energy!
1. Can yu put up with glbal warming ging up?
put up with：t bear r t tlerate
2. We dn’t have t put up with pllutin, because individuals can make a difference.
... we can’t put up with it any lnger because we can take a range f measures t reduce it...
a range f: a series f / a number f
1. Glbal warming has resulted in a range f serius cnsequences.
2. A range f natural catastrphes result frm glbal warming.
can take a range f measures t reduce it. We can als advcate imprvement in the way we use energy!
v. t supprt sth publicly; call n sb. t d sth.
We shuld advcate lw-carbn lifestyle t reduce glbal warming.
2. Citizens are advcated t use energy-saving appliances.
1. It is an increase in the average temperature f the earth's surface ver time. It is nt a randm natural phenmenn.
2. Greenhuse gases have resulted in glbal warming.
3. Every day we cnsume a large quantity f energy which mainly cmes frm burning large quantities f fssil fuels such as cal, il and natural gas.
4. When greenhuse gases cntinue t build up in the air, they tend t absrb heat frm the sun and therefre warm the earth.
5. If temperature cntinues ging up , it will result in many negative catastrphes like severe strms, flds, drughts, famines etc.
6. Mst scientists subscribe t the idea that human’s activities have resulted in glbal warming.
7. There is n dubt that we can’t put up with glbal warming any lnger because we can take a range f measures t reduce it. And we can als advcate imprvement in the way we use energy!
Task 2 Practice makes perfect
Exercise 1 :
Cmplete the passage using the crrect frm f wrds and expressins we’ve learnt.
quantities f, subscribe t, put up with, a quantity f, result in, a range f, cme abut, advcate
Air pllutin is a serius prblem. Hw has air pllutin__________? It ccurs when ___________ harmful gases, dust, smke enter int the atmsphere. Every day manufacturing industries and autmbiles release __________carbn mnxide, hydrcarbns and chemicals int the air, which pllutes the air. Air pllutin has __________ many negative cnsequences like glbal warming, acid rain etc.
S all scientists __________ the idea that air pllutin results frm human’s activities. There is n dubt that we can’t __________ the air pllutin any lnger. It is high time that we tk __________ measures t reduce it. We shuld __________ lw-carbn life. Remember ur cntributin cunts!
Air pllutin is a serius prblem. Hw has air pllutin__________? It ccurs when ___________ harmful gases, dust, smke enter int the atmsphere. Every day manufacturing industries and autmbiles release __________carbn mnxide, hydrcarbns and chemicals int the air, which pllutes the air. Air pllutin has __________ many negative cnsequences like glbal warming, acid rain etc.
quantities f
a quantity f
resulted in
S all scientists __________ the idea that air pllutin results frm human’s activities. There is n dubt that we can’t __________ air pllutin any lnger. It is high time that we tk __________ measures t reduce it. We shuld __________ lw-carbn life. Remember ur cntributin cunts!
subscribe t
put up with
Exercise 2 :
Read the fllwing passage and replace the wrds in yellw with the wrds and expressins we’ve learnt.
Nwadays, water pllutin becmes serius. Hw has water pllutin happened? With the develpment f industry, plants and factries pur tns f industrial wastes int rivers every day. Mre and mre chemicals are released int the rivers and lakes, which leads t water pllutin.
S, all scientists agree t the idea that water pllutin is caused by human’s activities. Water pllutin has caused many negative effects. Fr example, lts f seabirds and fish have lst their hmes and died because f the plluted water. It is certain that we can’t bear water pllutin. It is high time that we tk a series f measures t stp it. At the same time we shuld call n mre peple t save water resurces.
Nwadays, water pllutin becmes serius. Hw has water pllutin (happened) cme abut? With the develpment findustry, plants and factries pur (tns f) a quantityf industrial wastes int rivers every day. Mre chemicals are released int rivers, which (leads t) results in water pllutin. S, all scientists (agree t) subscribe t the idea that water pllutin (is caused by) results frm human’s activities.
Water pllutin has caused many negative (effects) cnsequences . Fr example, (lts f ) quantities f seabirds and fish have lst their hmes and died because f the plluted water. (It is certain that) There is n dubt that we can’t (bear) put up with water pllutin. It is high time that we tk (a series f ) a range f measures t stp it. At the same time we shuld (call n)advcate mre peple t save water resurces.
Exercise 3 :
June 5th is Internatinal Envirnment Day.Suppse n that day, n behalf f yur schl, yu are ging t make a speech n “Glbal Warming”. Please use the wrds and expressins that yu have learned tday t prepare the speech.
n behalf f: representing
Yu can prepare yur speech frm the fllwing fur aspects:
N. 1 What is glbal warming?
N. 2 Hw has glbal waring cme abut?
N. 3 What negative cnsequences will glbal warming result in?
N. 4 What can we d t deal with glbal warming?
Pssible Versin
Hell, everyne, Tday, I have great hnr t stand here t talk abut glbal warming. Glbal warming is an increase in the average temperature f the earth's surface ver time. It is a randm natural phenmenn. Hw has it cme abut? Glbal warming has resulted frm burning a large quantity f fssil fuels. This prcess
will release lts f greenhuse gases such as carbn mnxide, carbn dixide, hydrcarbns etc. When huge quantities f greenhuse gases are released int the air, mre heat energy tend t be absrbed in the atmsphere, which causes the temperature t g up. If temperature keeps ging up, it will result in catastrphes like flds, drughts, famines etc. S, I subscribe t the view that human’s activities have resulted in glbal warming. There is n dubt
that we can’t put up with glbal warming. Therefre, it is high time that we tk a range f measures t stp it. First f all, we can turn ff the lights and ther husehld appliances when they are nt used. And we’d better use public transprtatin instead f private cars. What’s mre, we can advcate imprvement in the way we use energy. All in all, remember ur cntributin can make a difference! That’s all, thank yu!
Lessn 1 Key wrds and expressins
Task 1 Read and discver
Our earth becmes warmer and warmer.
What is glbal warming?
average: adj. calculated by adding several amunts tgether, finding a ttal, dividing the ttal by the number
It is an increase in the average temperature f the earth’s surface ver time.
1. The greenhuse effect gives the earth’s surface the average temperature f 15 Celsius degree.
2. The average glbal temperature has increased year by year.
Is gbal warming a randm natural phenmenn?
randm: adj. phenmenn: n.
lacking any certain plan r rder
smething that happens in sciety r nature
1.The survey used a randm sample f 200 peple.
2. An earthquake is a natural phenmenn and happens frequently.
Hw has glbal warming cme abut?
Many scientists subscribe t the view that glbal warming has cme abut thrugh the burning f fssil fuels.
1. D yu subscribe t the idea that glbal warming is due t the human’s activities?
v. t agree t, supprt r accept
2. Scientists subscribe t the idea that water plluitn is caused by tns f industrial wastes pured int rivers.
Read and discver:
t receive r btain sth. regularly
1. Many famus peple subscribe t the Hpe Prject t help ut-f-schl children.
v.t dnate mney r things t sb. r sw.
2. I have subscribed t many English magazines and newspapers in rder t braden my mind.
3. D yu knw hw t subscribe t the Web service?
t pay mney regularly t have newspaper r magazines sent
1. Air pllutin has cme abut because lts f harmful gases, dust, and smke enter int the atmsphere.
t happen, especially in a way that is nt planned
Many scientists subscribe t the view that glbal warming has cme abut thrugh the burning f fssil fuels.
2. With the use f electricity, great changes have cme abut in life.
Glbal warming has cme abut because f greenhuse gases.
1. Glbal warming has resulted in many negative effects.
2. The burning f mre and mre fssil fuels has resulted in the increase in carbn dixide.
t have a specified effect n; t lead t; t cause
= Greenhuse gases have resulted in glbal warming.
Greenhuse gases have resulted in glbal warming.
1. Many negative effects have resulted frm glbal warming.
2. The increase in carbn dixide results frm the burning f mre and mre fssil fuels.
t be caused by
=Glbal warming has resulted frm greenhuse gases.
Where d greenhuse gases cme frm?
A large quantity f greenhuse gases cmes frm burning quantities f fssil fuels which prvide the energy that we cnsume every day.
v. t use energy ,clectricity, time etc.
1. Industrialized cuntries cnsume resurces in huge quantities.
2. Sme f the mst efficient refrigeratrs cnsume 70 percent less electricity than traditinal mdels.
1. Grace was cnsumed with curisity abut her new neighbur.
2. The fire cnsumed the building.
3. In rder t survive, human beings need t cnsume fd and water.
v. (frmal) t eat r drink sth.
v. t cmpletely destry sth
v. t fill sb with a strng feeling
A large quantity f greenhuse gases cmes frm burning quantities f fssil fuels which prvide the energy that we cnsume every day.
1. The prblem begins when we add huge quantities f extra carbn dixide t the atmsphere by burning fssil fuels.
2. My brther bught a large quantity f bks.
1. The bk shp sld a quantity f /quantities f bks.
2. The factry releases a quantity f / quantities f CO2 every day.
3. Large quantities f CO2 are prduced when burning fssil fuels.
4. A large quantity f CO2 is prduced when burning fssil fuels.
a quantity f / quantities f + cuntable nuns / uncuntable nun
Hw d greenhuse gases warm the earth?
When greenhuse gases cntinue t build up in the air, they tend t absrb heat frm the sun and therefre warm the earth.
= be likely t d
1. When it cmes t greenhuse gases, the public tends t fcus n carbn dixide.
2. Pllutin tends t increase in winter as cal-burning is still the main surce f heat.
1. The nurse is skillfully tending t the patient nw.
t lk after / take care f sb. / sth.
3. Lw carbn-ecnmy is the new tendency f ecnmy develpment in the present sciety.
n. a general directin in which smething tends t mve.
2. The ice cnditins are mild since the 1990s, which is related t the tendency f the glbal warming.
What negative effects will glbal warming result in?
If temperature cntinues ging up, it will result in many negative cnsequences like severe strms, flds, drughts, famines etc.
n. an effect r a result f sth that has happened;
1. The disappearance f ice in Antarctica will bring seriuscnsequences t the glbal climate.
2. Air pllutin can have serius cnsequences.
If temperature cntinues ging up, it will result in many catastrphes like severe strms, flds, drughts, famines etc.
n. a disaster r an unexpected event that causes great suffering
1. There are many natural catastrphes ccurring in nature.
2. Catastrphes will cme if mankind cntinues t pllute the envirnment.
Flda large amunt f water cvering an area
Drughta lng perid f time when there is little r n rain
Famine a severe shrtage f fd resulting in starvatin and death
What can we d abut glbal warming?
There is n dubt that we can’t put up with it any lnger because we can take a range f measures t reduce it.
There is n dubt that It is certain It is t be sure that...
1. There is n dubt that human activities result in glbal warming.
2. There is n dubt that the average temperature f the earth will rise year by year.
There is n dubt that we can’t put up with it any lnger becauseWe can take a range f measures t reduce it. We can als advcate imprvement in the way we use energy!
1. Can yu put up with glbal warming ging up?
put up with：t bear r t tlerate
2. We dn’t have t put up with pllutin, because individuals can make a difference.
... we can’t put up with it any lnger because we can take a range f measures t reduce it...
a range f: a series f / a number f
1. Glbal warming has resulted in a range f serius cnsequences.
2. A range f natural catastrphes result frm glbal warming.
can take a range f measures t reduce it. We can als advcate imprvement in the way we use energy!
v. t supprt sth publicly; call n sb. t d sth.
We shuld advcate lw-carbn lifestyle t reduce glbal warming.
2. Citizens are advcated t use energy-saving appliances.
1. It is an increase in the average temperature f the earth's surface ver time. It is nt a randm natural phenmenn.
2. Greenhuse gases have resulted in glbal warming.
3. Every day we cnsume a large quantity f energy which mainly cmes frm burning large quantities f fssil fuels such as cal, il and natural gas.
4. When greenhuse gases cntinue t build up in the air, they tend t absrb heat frm the sun and therefre warm the earth.
5. If temperature cntinues ging up , it will result in many negative catastrphes like severe strms, flds, drughts, famines etc.
6. Mst scientists subscribe t the idea that human’s activities have resulted in glbal warming.
7. There is n dubt that we can’t put up with glbal warming any lnger because we can take a range f measures t reduce it. And we can als advcate imprvement in the way we use energy!
Task 2 Practice makes perfect
Exercise 1 :
Cmplete the passage using the crrect frm f wrds and expressins we’ve learnt.
quantities f, subscribe t, put up with, a quantity f, result in, a range f, cme abut, advcate
Air pllutin is a serius prblem. Hw has air pllutin__________? It ccurs when ___________ harmful gases, dust, smke enter int the atmsphere. Every day manufacturing industries and autmbiles release __________carbn mnxide, hydrcarbns and chemicals int the air, which pllutes the air. Air pllutin has __________ many negative cnsequences like glbal warming, acid rain etc.
S all scientists __________ the idea that air pllutin results frm human’s activities. There is n dubt that we can’t __________ the air pllutin any lnger. It is high time that we tk __________ measures t reduce it. We shuld __________ lw-carbn life. Remember ur cntributin cunts!
Air pllutin is a serius prblem. Hw has air pllutin__________? It ccurs when ___________ harmful gases, dust, smke enter int the atmsphere. Every day manufacturing industries and autmbiles release __________carbn mnxide, hydrcarbns and chemicals int the air, which pllutes the air. Air pllutin has __________ many negative cnsequences like glbal warming, acid rain etc.
quantities f
a quantity f
resulted in
S all scientists __________ the idea that air pllutin results frm human’s activities. There is n dubt that we can’t __________ air pllutin any lnger. It is high time that we tk __________ measures t reduce it. We shuld __________ lw-carbn life. Remember ur cntributin cunts!
subscribe t
put up with
Exercise 2 :
Read the fllwing passage and replace the wrds in yellw with the wrds and expressins we’ve learnt.
Nwadays, water pllutin becmes serius. Hw has water pllutin happened? With the develpment f industry, plants and factries pur tns f industrial wastes int rivers every day. Mre and mre chemicals are released int the rivers and lakes, which leads t water pllutin.
S, all scientists agree t the idea that water pllutin is caused by human’s activities. Water pllutin has caused many negative effects. Fr example, lts f seabirds and fish have lst their hmes and died because f the plluted water. It is certain that we can’t bear water pllutin. It is high time that we tk a series f measures t stp it. At the same time we shuld call n mre peple t save water resurces.
Nwadays, water pllutin becmes serius. Hw has water pllutin (happened) cme abut? With the develpment findustry, plants and factries pur (tns f) a quantityf industrial wastes int rivers every day. Mre chemicals are released int rivers, which (leads t) results in water pllutin. S, all scientists (agree t) subscribe t the idea that water pllutin (is caused by) results frm human’s activities.
Water pllutin has caused many negative (effects) cnsequences . Fr example, (lts f ) quantities f seabirds and fish have lst their hmes and died because f the plluted water. (It is certain that) There is n dubt that we can’t (bear) put up with water pllutin. It is high time that we tk (a series f ) a range f measures t stp it. At the same time we shuld (call n)advcate mre peple t save water resurces.
Exercise 3 :
June 5th is Internatinal Envirnment Day.Suppse n that day, n behalf f yur schl, yu are ging t make a speech n “Glbal Warming”. Please use the wrds and expressins that yu have learned tday t prepare the speech.
n behalf f: representing
Yu can prepare yur speech frm the fllwing fur aspects:
N. 1 What is glbal warming?
N. 2 Hw has glbal waring cme abut?
N. 3 What negative cnsequences will glbal warming result in?
N. 4 What can we d t deal with glbal warming?
Pssible Versin
Hell, everyne, Tday, I have great hnr t stand here t talk abut glbal warming. Glbal warming is an increase in the average temperature f the earth's surface ver time. It is a randm natural phenmenn. Hw has it cme abut? Glbal warming has resulted frm burning a large quantity f fssil fuels. This prcess
will release lts f greenhuse gases such as carbn mnxide, carbn dixide, hydrcarbns etc. When huge quantities f greenhuse gases are released int the air, mre heat energy tend t be absrbed in the atmsphere, which causes the temperature t g up. If temperature keeps ging up, it will result in catastrphes like flds, drughts, famines etc. S, I subscribe t the view that human’s activities have resulted in glbal warming. There is n dubt
that we can’t put up with glbal warming. Therefre, it is high time that we tk a range f measures t stp it. First f all, we can turn ff the lights and ther husehld appliances when they are nt used. And we’d better use public transprtatin instead f private cars. What’s mre, we can advcate imprvement in the way we use energy. All in all, remember ur cntributin can make a difference! That’s all, thank yu!
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