Period 2 课文整体阅读
1．What does the passage mainly talk about
A．The sixth extinction．
B．The extinctions in history．
C．The steps to avoid extinction．
D．The reason for extinction．
2．What's the main idea of paragraph 2
A．Species die out naturally．
B．How quickly species die out．
C．Why so many species are dying out．
D．What effect human activity has on species．
Read the text carefully and then choose the best answer．
1．When did dinosaurs die out according to the passage
A．More than 500 million years ago．
B．More than 66 million years ago．
C．In the third mass extinction．
D．In the fourth mass extinction．
2．Which of the following is one of unnatural reasons for extinctions
A．Volcanic eruptions．
B．Asteroids hitting the Earth．
C．Changes in sea levels．
D．Air and water pollution．
3．What has made the species on Earth die out at a higher rate
A．Natural causes．
B．Global warming．
C．Human activity．
D．No clean water．
4．Why do we need to change the way we live now
A．To avoid a sixth extinction．
B．To live with others in peace．
C．To save natural sources of energy．
D．To work better and travel faster．
1．How much do you know about extinction Share it with your classmates．
_____________________________________________________________________
_____________________________________________________________________
2．What should we do to avoid species extinction
_____________________________________________________________________
_____________________________________________________________________
1．hunt vi．& vt．猎取，猎杀；搜寻，搜索；追踪，追捕
①(教材p．110)Yes，many animals are illegally hunted for something they have． ____________
②Parent birds began to hunt for food for their young． ____________
③Police are hunting an escaped criminal． ____________
2．mass adj．大量的 n．群众；团；块；堆；大量；许多
①(教材p．52)These include the third mass extinction，known as the “Great Dying”，which killed 90% to 96% of all species． ____________
②The hill appeared as a black mass in the distance． ____________
③There's a mass of work for her to do． ____________
④His music is commercial．It is aimed at the masses． ____________
3．decrease n．减少；减少的量vi．& vt．减少
①(教材p．52)According to scientists，they include volcanic eruptions，asteroids hitting the Earth from space，changes in sea levels，the decrease of the oxygen content of the sea and global warming． ____________
②They decreased the size of the group from 25 to 15． ____________
③The decrease in sales was almost 20 percent． ____________
4．affect vt．影响；侵袭；使感染；(感情上)深深打动；使悲伤
①(教材p．53)It is clear that human activity has negatively affected all other species on Earth，including animals and plants． ____________
②They were deeply affected by the news of her death． ____________
③Arthritis is a crippling disease which affects people all over the world． ____________
1．(学会断句)Although it is not unusual/for species to die out naturally，the rate /at which this is now happening/is cause for concern．
[分析]本句是一个________。句中Although it is not unusual for species to die out naturally为________从句；主句中的at which this is now happening为限制性定语从句，修饰先行词________。
[翻译]_______________________________________________________________
_____________________________________________________________________
2．(学会断句)A 2015 study by scientists/who were based at Brown University and Duke University/in the US，looked at how quickly species die out/due to natural causes，that is，the “background extinction rate”．
[分析]本句是一个复合句。A 2015 study为句子的________，looked at为________，how quickly species die out due to natural causes是________从句；句中who were based at Brown University and Duke University in the US为限制性定语从句，修饰先行词________。
[翻译]_______________________________________________________________
_____________________________________________________________________
3．(学会断句)If a sixth mass extinction occurs，scientists/who have studied the issue/believe/that up to three quarters of all species on Earth/could die out．
[分析]本句是一个复合句。句中If a sixth mass extinction occurs 为________从句；who have studied the issue为限制性定语从句，修饰先行词________；that up to three quarters of all species on Earth could die out是________从句。
[翻译]_______________________________________________________________
_____________________________________________________________________
4．(学会断句)In short，if we want to survive，we need to stop destroying the planet/that we live on/and start to protect it．
[分析]本句是一个复合句。句中if we want to survive为________从句；that we live on为限制性定语从句，修饰先行词________；start to protect it和to stop destroying the planet是并列结构，作need的________。
[翻译]_______________________________________________________________
_____________________________________________________________________
1．(应用文佳句)The reasons for extinctions are varied．
灭绝的原因多种多样。
2．(应用文佳句)There is a long list of reasons why so many species are dying out：air and water pollution，forests being destroyed，factory farming and overfishing．
造成如此多的物种灭绝的原因有很多：空气和水污染、森林被破坏、工业化种植和过度捕捞。
3．(应用文佳句)Of course，as we humans depend on so many species for our survival，we would also be at risk of dying out．
当然，由于我们人类依靠如此多的物种生存，我们也将面临灭绝的风险。
4．(应用文佳句)In short，if we want to survive，we need to stop destroying the planet that we live on and start to protect it．
简而言之，如果我们想要生存，我们需要停止破坏我们赖以生存的星球，并开始保护它。
For example，we need to take steps to save endangered species，including setting up special areas where plants and animals can be protected．We need to change how we work and travel by using cleaner，more natural sources of energy，such as wind and solar energy．We also need to improve our farming methods to reduce water，air and land pollution．
Period 2
课文理解
Task 1 整体理解
1—2 AD
Task 2 细节理解
1—4 BDCA
Task 3 多维探究
略
Task 4 课文框架
1．including 2．varied 3．out 4．affected 5．occurs 6．at 7．way 8．how 9．Improve 10．destroying
课文精粹
Ⅰ一词多义
1．①vt．猎杀 ②vi．搜寻，搜索 ③vt．追踪，追捕
2．①adj．大量的 ②n．块；堆 ③n．大量；许多 ④n．群众 3．①n．减少的量 ②vt．减少 ③n．减少的量
4．①影响 ②深深打动；使悲伤 ③使感染
Ⅱ长难语句
1．分析：复合句；让步状语；the rate
翻译：虽然物种的自然灭绝并不罕见，但现在灭绝的速度让人担忧。
2．分析：主语；谓语；宾语；scientists
翻译：美国布朗大学和杜克大学的科学家们于2015年进行了一项研究，考察了自然原因导致物种灭绝的速度，即“背景灭绝率”。
3．分析：条件状语；scientists；宾语
翻译：研究这个问题的科学家们认为，如果第六次大灭绝发生，地球上多达四分之三的物种可能就会灭绝。
4．分析：条件状语；the planet；宾语
翻译：简而言之，如果我们想要生存，我们需要停止破坏我们赖以生存的星球，并开始保护它。
1 / 5(共20张PPT)
复习任务群一
现代文阅读Ⅰ
把握共性之“新” 打通应考之“脉”
UNIT 3 CONSERVATION
主题语境 人与自然——人类生存、社会发展与环境的关系
Period 2 课时练案 课文整体阅读
Section Ⅰ TOPIC TALK & LESSON 1
√
1．What does the passage mainly talk about
A．The sixth extinction．
B．The extinctions in history．
C．The steps to avoid extinction．
D．The reason for extinction．
2．What's the main idea of paragraph 2
A．Species die out naturally．
B．How quickly species die out．
C．Why so many species are dying out．
D．What effect human activity has on species．
√
√
Read the text carefully and then choose the best answer．
1．When did dinosaurs die out according to the passage
A．More than 500 million years ago．
B．More than 66 million years ago．
C．In the third mass extinction．
D．In the fourth mass extinction．
√
2．Which of the following is one of unnatural reasons for extinctions
A．Volcanic eruptions．
B．Asteroids hitting the Earth．
C．Changes in sea levels．
D．Air and water pollution．
√
3．What has made the species on Earth die out at a higher rate
A．Natural causes． B．Global warming．
C．Human activity． D．No clean water．
4．Why do we need to change the way we live now
A．To avoid a sixth extinction．
B．To live with others in peace．
C．To save natural sources of energy．
D．To work better and travel faster．
√
1．How much do you know about extinction Share it with your classmates．
______________________________________________________________________________________________________________________
2．What should we do to avoid species extinction
______________________________________________________________________________________________________________________
[答案] 略
including
varied
out
affected
occurs
at
way
how
Improve
destroying
1．hunt vi．& vt．猎取，猎杀；搜寻，搜索；追踪，追捕
①(教材p．110)Yes，many animals are illegally hunted for something they have． ________
②Parent birds began to hunt for food for their young． ______________
③Police are hunting an escaped criminal． ______________
vt．猎杀
vi．搜寻，搜索
vt．追踪，追捕
2．mass adj．大量的 n．群众；团；块；堆；大量；许多
①(教材p．52)These include the third mass extinction，known as the “Great Dying”，which killed 90% to 96% of all species． ___________
②The hill appeared as a black mass in the distance． _________
③There's a mass of work for her to do． _____________
④His music is commercial．It is aimed at the masses． _______
adj．大量的
n．块；堆
n．大量；许多
n．群众
3．decrease n．减少；减少的量vi．& vt．减少
①(教材p．52)According to scientists，they include volcanic eruptions，asteroids hitting the Earth from space，changes in sea levels，the decrease of the oxygen content of the sea and global warming． ___________
②They decreased the size of the group from 25 to 15． ________
③The decrease in sales was almost 20 percent． ___________
n．减少的量
vt．减少
n．减少的量
4．affect vt．影响；侵袭；使感染；(感情上)深深打动；使悲伤
①(教材p．53)It is clear that human activity has negatively affected all other species on Earth，including animals and plants． ____
②They were deeply affected by the news of her death． ________________
③Arthritis is a crippling disease which affects people all over the world． ______
影响
深深打动；使悲伤
使感染
1．(学会断句)Although it is not unusual/for species to die out naturally，the rate /at which this is now happening/is cause for concern．
[分析]本句是一个______。句中Although it is not unusual for species to die out naturally为________从句；主句中的at which this is now happening为限制性定语从句，修饰先行词_________。
[翻译]_____________________________________________________
复合句
让步状语
the rate
虽然物种的自然灭绝并不罕见，但现在灭绝的速度让人担忧。
2．(学会断句)A 2015 study by scientists/who were based at Brown University and Duke University/in the US，looked at how quickly species die out/due to natural causes，that is，the “background extinction rate”．
[分析]本句是一个复合句。A 2015 study为句子的____，looked at为____，how quickly species die out due to natural causes是____从句；句中who were based at Brown University and Duke University in the US为限制性定语从句，修饰先行词__________。
[翻译]__________________________________________________________
_______________________________________________________________
主语
谓语
宾语
scientists
美国布朗大学和杜克大学的科学家们于2015年进行了一项研
究，考察了自然原因导致物种灭绝的速度，即“背景灭绝率”。
3．(学会断句)If a sixth mass extinction occurs，scientists/who have studied the issue/believe/that up to three quarters of all species on Earth/could die out．
[分析]本句是一个复合句。句中If a sixth mass extinction occurs 为________从句；who have studied the issue为限制性定语从句，修饰先行词__________；that up to three quarters of all species on Earth could die out是____从句。
[翻译]_____________________________________________________
___________________________________________________________
条件状语
scientists
宾语
研究这个问题的科学家们认为，如果第六次大灭绝发生，地
球上多达四分之三的物种可能就会灭绝。
4．(学会断句)In short，if we want to survive，we need to stop destroying the planet/that we live on/and start to protect it．
[分析]本句是一个复合句。句中if we want to survive为________从句；that we live on为限制性定语从句，修饰先行词___________；start to protect it和to stop destroying the planet是并列结构，作need的____。
[翻译]_____________________________________________________
___________________________________________________________
条件状语
the planet
宾语
简而言之，如果我们想要生存，我们需要停止破坏我们赖以
生存的星球，并开始保护它。
1．(应用文佳句)The reasons for extinctions are varied．
灭绝的原因多种多样。
2．(应用文佳句)There is a long list of reasons why so many species are dying out：air and water pollution，forests being destroyed，factory farming and overfishing．
造成如此多的物种灭绝的原因有很多：空气和水污染、森林被破坏、工业化种植和过度捕捞。
3．(应用文佳句)Of course，as we humans depend on so many species for our survival，we would also be at risk of dying out．
当然，由于我们人类依靠如此多的物种生存，我们也将面临灭绝的风险。
4．(应用文佳句)In short，if we want to survive，we need to stop destroying the planet that we live on and start to protect it．
简而言之，如果我们想要生存，我们需要停止破坏我们赖以生存的星球，并开始保护它。
For example，we need to take steps to save endangered species，including setting up special areas where plants and animals can be protected．We need to change how we work and travel by using cleaner，more natural sources of energy，such as wind and solar energy．We also need to improve our farming methods to reduce water，air and land pollution．
谢 谢！
