外研版（2019） 选择性必修第一册 Unit 5 Revealing Nature Using language课件(共19张PPT)
文档属性
| 名称 | 外研版（2019） 选择性必修第一册 Unit 5 Revealing Nature Using language课件(共19张PPT) |  | |
| 格式 | pptx | ||
| 文件大小 | 9.2MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2022-09-29 22:02:45 | ||
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文档简介
(共19张PPT)
Using language
Past perfect
Biodiversity
Activity 1
Look at the sentences from the reading passage and
answer the questions.
1. In sentence (a), which action happened first, “suspected” or “evolved from a common ancestor”
“evolved from a common ancestor”.
2. In sentence (b), which action happened first, “refused to believe” or “evolved from lower forms of life”
“evolved from lower forms of life”.
3. What does the structure had done indicate
It indicates the action happened before a certain past action.
Activity 1
Now look for more sentences with the past perfect tense in the reading passage, and summarise its use in your own words.
1. It was a young man who had left medical school without completing his degree.
2. ... he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”.
3. After Darwin had spent some time in South America, his room on the ship was crowed with samples of the plants and animals he had collected.
4. At that time, people believed that all species had appeared on Earth at the same time, and had not changed since.
5. It seemed their beaks had evolved according to what food was available on that particular island.
6. Over time, it had slowly evolved into many new species.
Past perfect
form:
fun_ction:
过去完成时与现在完成时的区别：
had done
过去某一时刻或某一动作之前已完成的动作或状态，也可以说是“过去的过去”。
now
past
future
过去完成时
现在完成时
时间参照不同
Exercises
Complete the sentences with the correct form of the verbs and phrasal verbs in brackets.
Jane _________(watch) a nature film on TV when someone knocked on the door.
On our trip to Africa last year, we __________(see) lions sitting in the tall grass watching us.
The girl, when _________ (question) why she _________ (cheat) in the exam, just lowered her head and kept silent.
The boy _________ (cry) loudly because he _________ (lose) his way in the jungle and thought he couldn’t go back home.
The young man insisted he _________ (do) nothing wrong and that the police _________ (release) him．
By the end of last year, another new hospital _________ (complete) in our city.
I got an e mail from my old friend last Sunday. Until then，we _________ (keep) in touch for nearly 3 years.
was watching
saw
questioned
had cheated
cried
had lost
had done
release
had completed
had kept
Activity 2
1. began
2. had led to
3. developed
4. chose to
5. had made
Complete the paragraphs with the information from the given sentences.
Activity 3
Complete the online encyclopedia entry with the correct form of the words in the box.
compete decline eat
live introduce arrive
had lived
eaten
had introduced
competed
declined
arrived
Activity 4
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.
Biodiversity
Activity 5
Listen to the podcast and choose the statements that are made.
1 Biodiversity is important.
2 Bacteria are always harmful to humans.
3 Some species of bacteria are used in food production.
4 Many species of bacteria recycle dead organic matter.
5 Our immune systems are able to fight off all germs.
Activity 6
Listen again and complete the fact sheet.
Discuss what you know about cells and bacteria in pairs.
thirty trillion
thirty-nine trillion
made up of cells
bricks that are used to build houses
help with digestion
break down
Activity 7
Do you know about......
Have you heard of ......
Complete the boxes with the expressions from the podcast.
By the way......
Actually......
In fact,......
Speaking of which,…
Checking background knowledge
Adding information
Answer the questions.
Activity 8
1. What species are mentioned and what is special about them
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 150 C to a below freezing -272 C.
2. What other unusual life forms do you know of
Activity 9
is home to
are native to
scientific
habitats
ecosystem
appearance
primitive
ancestor
Complete the paragraphs with the correct form of the words and expressions in the box.
Activity 10
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.
水杉
胡杨
Smart expressions
宣布……灭绝
这种乌龟的灭绝归咎于人类。
到那时为止
尤其，特别
对……有害
抵抗病菌
因为……而举世闻名
是……的家园/栖息地
原产于
declare … extinct
The extinction of the tortoise is blamed on humans.
by then
in particular
be harmful to …
fight off germs
be renowned worldwide for …
be home to …
be native to …
declare
[VN] to say sth officially or publicly
usages:
1. [VN] e.g. 宣战
2. [V that] e.g. 他声明不再竞选连任总统。
3. [VN-N] e.g. 宣布挑战成功
4. [VN-ADJ] e.g. 习主席宣布冬奥会开幕。
5. [VN to inf] e.g. 这幅画被判定是赝品(forgery)。
declare war on the country
He declared that he would not run for a second term as president.
declare the challenge a success
President Xi declared the Beijing 2022 Winter Olympics open.
The painting was declared to be a forgery.
declaration [N]
declarative [ADJ]
How to translate declare in the sentences
Do you have to declare everything you buy at the airport
“I’ll do it!” Tom declared.
declare
(果断地说； to state sth. firmly and clearly )
申报（应纳税物品）
Using language
Past perfect
Biodiversity
Activity 1
Look at the sentences from the reading passage and
answer the questions.
1. In sentence (a), which action happened first, “suspected” or “evolved from a common ancestor”
“evolved from a common ancestor”.
2. In sentence (b), which action happened first, “refused to believe” or “evolved from lower forms of life”
“evolved from lower forms of life”.
3. What does the structure had done indicate
It indicates the action happened before a certain past action.
Activity 1
Now look for more sentences with the past perfect tense in the reading passage, and summarise its use in your own words.
1. It was a young man who had left medical school without completing his degree.
2. ... he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”.
3. After Darwin had spent some time in South America, his room on the ship was crowed with samples of the plants and animals he had collected.
4. At that time, people believed that all species had appeared on Earth at the same time, and had not changed since.
5. It seemed their beaks had evolved according to what food was available on that particular island.
6. Over time, it had slowly evolved into many new species.
Past perfect
form:
fun_ction:
过去完成时与现在完成时的区别：
had done
过去某一时刻或某一动作之前已完成的动作或状态，也可以说是“过去的过去”。
now
past
future
过去完成时
现在完成时
时间参照不同
Exercises
Complete the sentences with the correct form of the verbs and phrasal verbs in brackets.
Jane _________(watch) a nature film on TV when someone knocked on the door.
On our trip to Africa last year, we __________(see) lions sitting in the tall grass watching us.
The girl, when _________ (question) why she _________ (cheat) in the exam, just lowered her head and kept silent.
The boy _________ (cry) loudly because he _________ (lose) his way in the jungle and thought he couldn’t go back home.
The young man insisted he _________ (do) nothing wrong and that the police _________ (release) him．
By the end of last year, another new hospital _________ (complete) in our city.
I got an e mail from my old friend last Sunday. Until then，we _________ (keep) in touch for nearly 3 years.
was watching
saw
questioned
had cheated
cried
had lost
had done
release
had completed
had kept
Activity 2
1. began
2. had led to
3. developed
4. chose to
5. had made
Complete the paragraphs with the information from the given sentences.
Activity 3
Complete the online encyclopedia entry with the correct form of the words in the box.
compete decline eat
live introduce arrive
had lived
eaten
had introduced
competed
declined
arrived
Activity 4
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.
Biodiversity
Activity 5
Listen to the podcast and choose the statements that are made.
1 Biodiversity is important.
2 Bacteria are always harmful to humans.
3 Some species of bacteria are used in food production.
4 Many species of bacteria recycle dead organic matter.
5 Our immune systems are able to fight off all germs.
Activity 6
Listen again and complete the fact sheet.
Discuss what you know about cells and bacteria in pairs.
thirty trillion
thirty-nine trillion
made up of cells
bricks that are used to build houses
help with digestion
break down
Activity 7
Do you know about......
Have you heard of ......
Complete the boxes with the expressions from the podcast.
By the way......
Actually......
In fact,......
Speaking of which,…
Checking background knowledge
Adding information
Answer the questions.
Activity 8
1. What species are mentioned and what is special about them
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 150 C to a below freezing -272 C.
2. What other unusual life forms do you know of
Activity 9
is home to
are native to
scientific
habitats
ecosystem
appearance
primitive
ancestor
Complete the paragraphs with the correct form of the words and expressions in the box.
Activity 10
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.
水杉
胡杨
Smart expressions
宣布……灭绝
这种乌龟的灭绝归咎于人类。
到那时为止
尤其，特别
对……有害
抵抗病菌
因为……而举世闻名
是……的家园/栖息地
原产于
declare … extinct
The extinction of the tortoise is blamed on humans.
by then
in particular
be harmful to …
fight off germs
be renowned worldwide for …
be home to …
be native to …
declare
[VN] to say sth officially or publicly
usages:
1. [VN] e.g. 宣战
2. [V that] e.g. 他声明不再竞选连任总统。
3. [VN-N] e.g. 宣布挑战成功
4. [VN-ADJ] e.g. 习主席宣布冬奥会开幕。
5. [VN to inf] e.g. 这幅画被判定是赝品(forgery)。
declare war on the country
He declared that he would not run for a second term as president.
declare the challenge a success
President Xi declared the Beijing 2022 Winter Olympics open.
The painting was declared to be a forgery.
declaration [N]
declarative [ADJ]
How to translate declare in the sentences
Do you have to declare everything you buy at the airport
“I’ll do it!” Tom declared.
declare
(果断地说； to state sth. firmly and clearly )
申报（应纳税物品）