Unit 5 Revealing nature Using ideas课件(共36张PPT)-高中英语外研版（2019）选择性必修第一册
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| 名称 | Unit 5 Revealing nature Using ideas课件(共36张PPT)-高中英语外研版（2019）选择性必修第一册 |  | |
| 格式 | pptx | ||
| 文件大小 | 35.0MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-06-19 17:01:43 | ||
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(共36张PPT)
Using language
Unit 5
Revealing
nature
Learning Objectives
PART. 01
Understand the daily study and life of British middle school students by watching videos. Based on your own daily study and life, compare the study and life in Chinese and British schools, and find out the similarities and differences between the two. Talk about your first impression of high school life, and have a preliminary perception of the study and life in the senior high school stage.
Learning Objectives
Discover and master the structure and usage of the past perfect, and apply it flexibly in real-life contexts. Use functional expressions to communicate about natural world topics, enhancing oral and written expression abilities.
Cultivate the awareness of the cultural significance of biodiversity conservation, recognizing global efforts and values in protecting natural ecosystems.
Develop your analytical thinking by exploring the rules of the past perfect, and stimulate critical thinking through tasks about biodiversity.
Adopt effective learning strategies to master the past perfect and biodiversity knowledge independently. Use various methods to gather information about biodiversity.
Understand the daily study and life of British middle school students by watching videos. Based on your own daily study and life, compare the study and life in Chinese and British schools, and find out the similarities and differences between the two. Talk about your first impression of high school life, and have a preliminary perception of the study and life in the senior high school stage.
Teaching Focuses and Anticipated Difficulties
Students can master the structure and usage of the past perfect, and apply it flexibly in real-life communication about the natural world.
Correctly using the past perfect in real-life contexts. Adopt effective learning strategies to master the past perfect and biodiversity knowledge independently. Use various methods to gather information about biodiversity.
Grammar
PART. 02
Look at the sentences from the reading passage and answer the question.
1. In sentence (a), which action happened first, “suspected” or “evolved from a common ancestor”
In sentence (a), “evolved from a common ancestor” happened first.
2. In sentence (b), which action happened first, “refused to believe” or “evolved from lower forms of life”
In sentence (b), “evolved from lower forms of life” happened first.
3. What does the structure had done indicate
It indicates the action happened before a certain past action.
Past perfect (过去完成时)
一、构成
过去完成时由“助动词 had (通用于各种人称和数)+过去分词”构成。
二、用法
1. 过去完成时表示在过去某一时间或某一动作之前已经完成的动作或存在的状态。
When she arrived at the cinema, the movie had already started.
她到电影院时，电影已经开始了。
2. 还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间或还要持续下去，常用的时间状语有by then，by the end of 等。
By the end of last term, our class had planted over 100 trees in the schoolyard.
到上学期末，我们班已经在校园种了100多棵树 。
3. 用于表示与过去事实相反的虚拟条件从句中。
If she had studied harder last term, she would have passed all the exams.
要是她上学期学习再努力点，就会通过所有考试了。
4. 过去完成时也用于hardly...when..., no sooner…than..., It was the first time+that(从) 等一些固定句型中。
Hardly had he stepped into the house when it started to rain heavily.
他刚踏进家门，就开始下大雨了。
5. 表示未曾实现的希望、打算、意图、诺言、想法等，常用过去完成时。
He had planned to go hiking this weekend, but it rained.
他本打算这周末去徒步，结果下雨了。
2. 过去完成时与一般过去时的区别
(1)时间状语不同：过去完成时在时间上强调“过去的过去”，而一般过去时只强调过去某一特定的时间。
By the end of last week, she had finished reading five classic novels.
到上周末为止，她已经读完了五本经典小说。（“读完” 在 “上周末” 这个过去
时间前就完成了）
She finished reading a poem collection last night.
她昨晚读完了一本诗集。（单纯说昨晚发生的动作 ）
2. 过去完成时与一般过去时的区别
(2)在没有明确的过去时间状语作标志时，谓语动词动作发生的时间先后须依据上下文来判断：先发生的用过去完成时，后发生的则用一般过去时。
He had prepared a big surprise for his mom. He gave it to her when she got home.
他给妈妈准备了一个大惊喜 。妈妈回家时，他把惊喜送出去了 。（“准备惊喜”
先于 “送惊喜 / 妈妈回家” ，所以 “had prepared” 是过去完成时，“gave”“got” 是
一般过去时。）
Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. They can help you to decide the use of tenses.
began
had led to
developed
Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. They can help you to decide the use of tenses.
chose to
had made
Yuan Longping
Yuan Longping was born in Beijing in 1930. After he graduated from university in the early 1950s, he dedicated himself to the research of agriculture. Yuan had the idea to create a new breed of rice in the 1960s. Since then, he has worked tirelessly to research and develop a better rice breed. In 1973 he and his collaborators managed to cultivate a hybrid rice species that was superior to many others. This species produced 20 per cent more rice per plant than the commonly grown varieties. For his achievements and contributions, Yuan is known as the “father of hybrid rice” and was awarded the Medal of the Republic in 2019.
Gregor Mendel
Gregor Mendel (1822-1884) was an influential botanist. Mendel worked out the basic principles of heredity by experimenting with plants. In 1866, he published his findings, showing how invisible “factors” (now known as genes) are responsible for predictable visible traits. As a result of his work, he became known as the “father of modern genetics”.
Complete the online encyclopaedia entry with the correct form of the words in the box.
Lonesome George
Lonesome George was the last Pinta Island tortoise. He died in 2012. After George’s death, the Pinta Island tortoise was declared extinct.
The extinction of the Pinta Island tortoise is blamed on humans. Before humans 1________ on the island, the species 2_________ in isolation and 3__________ the plants that naturally grew there. George was discovered many years after their arrival, and by then humans 4_____________ new species that 5__________ for the food the tortoises ate. After goats in particular had been brought to the island, the Pinta Island tortoise population 6___________. Eventually, only George remained.
arrived
had lived
eaten
had introduced
competed
declined
compete decline eat live introduce arrive
Work in pairs. Act out a role-play using the information in activity 3. One of you will play the keeper of Lonesome George, and the other will play the reporter asking about George. Use the past perfect tense where appropriate.
Listening
PART. 03
Listen to the podcast and choose the statements that are made.
Biodiversity is important.
Bacteria are always harmful to humans.
Some species of bacteria are used in food production.
Many species of bacteria recycle dead organic matter.
Our immune systems are able to fight off all germs.
Listen again and complete the fact sheet.
Cells
Every living thing is 1 __________________________.
They are like 2 _________________________________.
In the human body there are about 3 _________________ human cells and around 4 _________________________ bacteria cells.
Bacteria
Most bacteria in the human body can 5 _____________________.
In the food production process, bacteria can 6 ______________ dead organic matter.
made up of cells
bricks that are used to build houses
thirty trillion
thirty-nine trillion
help with digestion
break down
Now work in pairs. Discuss what you know about cells and bacteria.
Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature. These cells cooperate with other specialized cells and become the building blocks of large multicellular organisms, such as humans and other animals.
Bacteria, life-form bacteria, any of a group of microscopic single-celled organisms that live in enormous numbers in almost every environment on Earth, from deep-sea vents to deep below Earth’s surface to the digestive tracts of humans other animals.
Complete the boxes with the expressions from the podcast.
Checking background knowledge
Adding information
Do you know about...
Have you heard of...
By the way, ...
In fact, ...
Actually, ...
Speaking of which, ...
Read the passage and answer the questions.
1. What species are mentioned and what is special about them
Two species are mentioned: the blue whale and the water bear. The blue whale is the largest animal species on Earth, which can grow up to almost 30 metres in length and weigh over 130,000 kilos. The water bear is probably the toughest species, which can survive temperatures from 150C to a below freezing -272℃.
2. What other unusual life forms do you know of
Complete the paragraphs with the correct form of the words and expressions in the box.
The Galápagos Islands are renowned worldwide for their unique biodiversity. The Giant Tortoise Reserve on Santa Cruz 1___________ several species of giant tortoise that 2___________ the Galápagos Islands. The island is also home to the Charles Darwin Research Station, where 3___________ studies are carried out.
Mangroves are one of the coastal plants that grow on Isabela. They serve as the 4__________ for various birds and fish, and are very important to the 5___________.
Lguanas can be found on San Cristóbal. They have a very special 6____________, with comb-like spines on their back. There is evidence that all the different iguanas have developed from more 7__________ ones and share a common 8_____________.
is home to
are native to
scientific
habitats
ecosystem
appearance
primitive
ancestor
Galápagos Islands
Work in pairs. Look at the pictures of the species native to different regions of China. Talk about biodiversity in China using the words and expressions in this section.
Do online research to find more information.
Now talk about what methods you used to collect the information pare your methods with your partner’s and think about which methods are more efficient.
Vocabulary
1. decline
decline by... 减少了……
decline to... 减少到……
decline in... 在……方面降低
decline to do sth. 拒绝做某事
例题：
This year’s wheat production declined ______ 800 kilograms per hectare due to the prolonged drought.
由于长期干旱，今年小麦产量减少到每公顷 800 公斤。
to
Vocabulary
2. blame
blame sb./sth. for sth. 把某事归咎于某人/某物
blame sb. for (doing) sth. 因(做)某事而责备某人
take/accept the blame ( for sth.) 承担(某事的)责任
put/lay/place the blame on sb. 把责任归于某人
the blame lies with sb. 责任在于某人
例题：
She blamed her brother ________ breaking the vase, even though it was an accident.
for
Exercise
PART. 04
1. Archaeologists discovered p_________(原始的) tools made of stone and bone in the cave, dating back 10,000 years.
2. The c_____________(特征) of this plant is its ability to survive in extremely dry conditions.
3. The company invested a g_______(巨大的) sum of $500 million in developing renewable energy technologies.
4. The Olympic Games attract w__________(遍及全世界) attention, showcasing athletic excellence and cultural diversity.
rimitive
Exercise: 单词拼写
haracteristic
iant
orldwide
If he __________ (take) my advice, he wouldn’t have made such a big mistake.
Hardly __________ (have) she entered the classroom when the bell rang.
It was the third time that he ________________ (forget) to bring his textbook.
When I finally found my keys, I realized I ___________ (leave) them in the office.
They __________ (hope) to go on a picnic, but the heavy rain stopped them.
Before she became a famous writer, she ______________ (publish) several short stories.
He looked very tired because he _________________ (work) for 12 hours straight.
had taken
Exercise: 用所给词的适当形式填空
had
had left
had forgotten
had hoped
had published
had been working
Summary
PART. 05
Using language
Grammar
Vocabulary
Listening
过去完成时
用法
区别
构成
Homework
PART. 06
Review what you have learnt in this class;
Do further research on biodiversity in China and share your ideas with your friends.
Homework
See you next class!
Using language
Unit 5
Revealing
nature
Learning Objectives
PART. 01
Understand the daily study and life of British middle school students by watching videos. Based on your own daily study and life, compare the study and life in Chinese and British schools, and find out the similarities and differences between the two. Talk about your first impression of high school life, and have a preliminary perception of the study and life in the senior high school stage.
Learning Objectives
Discover and master the structure and usage of the past perfect, and apply it flexibly in real-life contexts. Use functional expressions to communicate about natural world topics, enhancing oral and written expression abilities.
Cultivate the awareness of the cultural significance of biodiversity conservation, recognizing global efforts and values in protecting natural ecosystems.
Develop your analytical thinking by exploring the rules of the past perfect, and stimulate critical thinking through tasks about biodiversity.
Adopt effective learning strategies to master the past perfect and biodiversity knowledge independently. Use various methods to gather information about biodiversity.
Understand the daily study and life of British middle school students by watching videos. Based on your own daily study and life, compare the study and life in Chinese and British schools, and find out the similarities and differences between the two. Talk about your first impression of high school life, and have a preliminary perception of the study and life in the senior high school stage.
Teaching Focuses and Anticipated Difficulties
Students can master the structure and usage of the past perfect, and apply it flexibly in real-life communication about the natural world.
Correctly using the past perfect in real-life contexts. Adopt effective learning strategies to master the past perfect and biodiversity knowledge independently. Use various methods to gather information about biodiversity.
Grammar
PART. 02
Look at the sentences from the reading passage and answer the question.
1. In sentence (a), which action happened first, “suspected” or “evolved from a common ancestor”
In sentence (a), “evolved from a common ancestor” happened first.
2. In sentence (b), which action happened first, “refused to believe” or “evolved from lower forms of life”
In sentence (b), “evolved from lower forms of life” happened first.
3. What does the structure had done indicate
It indicates the action happened before a certain past action.
Past perfect (过去完成时)
一、构成
过去完成时由“助动词 had (通用于各种人称和数)+过去分词”构成。
二、用法
1. 过去完成时表示在过去某一时间或某一动作之前已经完成的动作或存在的状态。
When she arrived at the cinema, the movie had already started.
她到电影院时，电影已经开始了。
2. 还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间或还要持续下去，常用的时间状语有by then，by the end of 等。
By the end of last term, our class had planted over 100 trees in the schoolyard.
到上学期末，我们班已经在校园种了100多棵树 。
3. 用于表示与过去事实相反的虚拟条件从句中。
If she had studied harder last term, she would have passed all the exams.
要是她上学期学习再努力点，就会通过所有考试了。
4. 过去完成时也用于hardly...when..., no sooner…than..., It was the first time+that(从) 等一些固定句型中。
Hardly had he stepped into the house when it started to rain heavily.
他刚踏进家门，就开始下大雨了。
5. 表示未曾实现的希望、打算、意图、诺言、想法等，常用过去完成时。
He had planned to go hiking this weekend, but it rained.
他本打算这周末去徒步，结果下雨了。
2. 过去完成时与一般过去时的区别
(1)时间状语不同：过去完成时在时间上强调“过去的过去”，而一般过去时只强调过去某一特定的时间。
By the end of last week, she had finished reading five classic novels.
到上周末为止，她已经读完了五本经典小说。（“读完” 在 “上周末” 这个过去
时间前就完成了）
She finished reading a poem collection last night.
她昨晚读完了一本诗集。（单纯说昨晚发生的动作 ）
2. 过去完成时与一般过去时的区别
(2)在没有明确的过去时间状语作标志时，谓语动词动作发生的时间先后须依据上下文来判断：先发生的用过去完成时，后发生的则用一般过去时。
He had prepared a big surprise for his mom. He gave it to her when she got home.
他给妈妈准备了一个大惊喜 。妈妈回家时，他把惊喜送出去了 。（“准备惊喜”
先于 “送惊喜 / 妈妈回家” ，所以 “had prepared” 是过去完成时，“gave”“got” 是
一般过去时。）
Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. They can help you to decide the use of tenses.
began
had led to
developed
Complete the paragraphs with the information from the given sentences. The sentences are in the order in which they happened. They can help you to decide the use of tenses.
chose to
had made
Yuan Longping
Yuan Longping was born in Beijing in 1930. After he graduated from university in the early 1950s, he dedicated himself to the research of agriculture. Yuan had the idea to create a new breed of rice in the 1960s. Since then, he has worked tirelessly to research and develop a better rice breed. In 1973 he and his collaborators managed to cultivate a hybrid rice species that was superior to many others. This species produced 20 per cent more rice per plant than the commonly grown varieties. For his achievements and contributions, Yuan is known as the “father of hybrid rice” and was awarded the Medal of the Republic in 2019.
Gregor Mendel
Gregor Mendel (1822-1884) was an influential botanist. Mendel worked out the basic principles of heredity by experimenting with plants. In 1866, he published his findings, showing how invisible “factors” (now known as genes) are responsible for predictable visible traits. As a result of his work, he became known as the “father of modern genetics”.
Complete the online encyclopaedia entry with the correct form of the words in the box.
Lonesome George
Lonesome George was the last Pinta Island tortoise. He died in 2012. After George’s death, the Pinta Island tortoise was declared extinct.
The extinction of the Pinta Island tortoise is blamed on humans. Before humans 1________ on the island, the species 2_________ in isolation and 3__________ the plants that naturally grew there. George was discovered many years after their arrival, and by then humans 4_____________ new species that 5__________ for the food the tortoises ate. After goats in particular had been brought to the island, the Pinta Island tortoise population 6___________. Eventually, only George remained.
arrived
had lived
eaten
had introduced
competed
declined
compete decline eat live introduce arrive
Work in pairs. Act out a role-play using the information in activity 3. One of you will play the keeper of Lonesome George, and the other will play the reporter asking about George. Use the past perfect tense where appropriate.
Listening
PART. 03
Listen to the podcast and choose the statements that are made.
Biodiversity is important.
Bacteria are always harmful to humans.
Some species of bacteria are used in food production.
Many species of bacteria recycle dead organic matter.
Our immune systems are able to fight off all germs.
Listen again and complete the fact sheet.
Cells
Every living thing is 1 __________________________.
They are like 2 _________________________________.
In the human body there are about 3 _________________ human cells and around 4 _________________________ bacteria cells.
Bacteria
Most bacteria in the human body can 5 _____________________.
In the food production process, bacteria can 6 ______________ dead organic matter.
made up of cells
bricks that are used to build houses
thirty trillion
thirty-nine trillion
help with digestion
break down
Now work in pairs. Discuss what you know about cells and bacteria.
Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature. These cells cooperate with other specialized cells and become the building blocks of large multicellular organisms, such as humans and other animals.
Bacteria, life-form bacteria, any of a group of microscopic single-celled organisms that live in enormous numbers in almost every environment on Earth, from deep-sea vents to deep below Earth’s surface to the digestive tracts of humans other animals.
Complete the boxes with the expressions from the podcast.
Checking background knowledge
Adding information
Do you know about...
Have you heard of...
By the way, ...
In fact, ...
Actually, ...
Speaking of which, ...
Read the passage and answer the questions.
1. What species are mentioned and what is special about them
Two species are mentioned: the blue whale and the water bear. The blue whale is the largest animal species on Earth, which can grow up to almost 30 metres in length and weigh over 130,000 kilos. The water bear is probably the toughest species, which can survive temperatures from 150C to a below freezing -272℃.
2. What other unusual life forms do you know of
Complete the paragraphs with the correct form of the words and expressions in the box.
The Galápagos Islands are renowned worldwide for their unique biodiversity. The Giant Tortoise Reserve on Santa Cruz 1___________ several species of giant tortoise that 2___________ the Galápagos Islands. The island is also home to the Charles Darwin Research Station, where 3___________ studies are carried out.
Mangroves are one of the coastal plants that grow on Isabela. They serve as the 4__________ for various birds and fish, and are very important to the 5___________.
Lguanas can be found on San Cristóbal. They have a very special 6____________, with comb-like spines on their back. There is evidence that all the different iguanas have developed from more 7__________ ones and share a common 8_____________.
is home to
are native to
scientific
habitats
ecosystem
appearance
primitive
ancestor
Galápagos Islands
Work in pairs. Look at the pictures of the species native to different regions of China. Talk about biodiversity in China using the words and expressions in this section.
Do online research to find more information.
Now talk about what methods you used to collect the information pare your methods with your partner’s and think about which methods are more efficient.
Vocabulary
1. decline
decline by... 减少了……
decline to... 减少到……
decline in... 在……方面降低
decline to do sth. 拒绝做某事
例题：
This year’s wheat production declined ______ 800 kilograms per hectare due to the prolonged drought.
由于长期干旱，今年小麦产量减少到每公顷 800 公斤。
to
Vocabulary
2. blame
blame sb./sth. for sth. 把某事归咎于某人/某物
blame sb. for (doing) sth. 因(做)某事而责备某人
take/accept the blame ( for sth.) 承担(某事的)责任
put/lay/place the blame on sb. 把责任归于某人
the blame lies with sb. 责任在于某人
例题：
She blamed her brother ________ breaking the vase, even though it was an accident.
for
Exercise
PART. 04
1. Archaeologists discovered p_________(原始的) tools made of stone and bone in the cave, dating back 10,000 years.
2. The c_____________(特征) of this plant is its ability to survive in extremely dry conditions.
3. The company invested a g_______(巨大的) sum of $500 million in developing renewable energy technologies.
4. The Olympic Games attract w__________(遍及全世界) attention, showcasing athletic excellence and cultural diversity.
rimitive
Exercise: 单词拼写
haracteristic
iant
orldwide
If he __________ (take) my advice, he wouldn’t have made such a big mistake.
Hardly __________ (have) she entered the classroom when the bell rang.
It was the third time that he ________________ (forget) to bring his textbook.
When I finally found my keys, I realized I ___________ (leave) them in the office.
They __________ (hope) to go on a picnic, but the heavy rain stopped them.
Before she became a famous writer, she ______________ (publish) several short stories.
He looked very tired because he _________________ (work) for 12 hours straight.
had taken
Exercise: 用所给词的适当形式填空
had
had left
had forgotten
had hoped
had published
had been working
Summary
PART. 05
Using language
Grammar
Vocabulary
Listening
过去完成时
用法
区别
构成
Homework
PART. 06
Review what you have learnt in this class;
Do further research on biodiversity in China and share your ideas with your friends.
Homework
See you next class!