外研版（2019）选择性必修 第二册 Unit 5 A delicate world Using language课件（共34张，内嵌视频）
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| 名称 | 外研版（2019）选择性必修 第二册 Unit 5 A delicate world Using language课件（共34张，内嵌视频） |  | |
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| 文件大小 | 30.7MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2024-10-26 18:12:02 | ||
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(共34张PPT)
Unit 5
A delicate world
It as an empty object and empty subject.
Look at the sentences from the interview and answer the questions.
1 What does “it” refer to in sentences (a) and (c)
“It” in sentence(a) refers to“the island is a UNESCO World Heritage Site”.
“It” in sentence (c) refers to “to come up with a planto remove all the rabbits from the island”
What is the difference between the sentences in each group
When the object of a sentence is a that-clause(b) or an infinitive (d), we sometimes use “it” as an empty object and put the real object later to keep balance. For example,sentence(a)uses “it’ as the empty object of “think”, referring to the real object: “the island is a UNESCO World Heritage Site”. Sentence (b) uses that-clause as the object of “think”.
it as an empty object—it 作形式宾语
当动词不定式（短语）、v-ing(短语）或从句作宾语时，为了保持句子结构的平衡，常用it作形式宾语，而将真正的宾语后置。此时的it无词义。
（1）常以it作形式宾语的动词有：feel, consider, find, believe, make, take, imagine, prove, think, suppose, regard, notice等。
I find it easy to get on with Jim.
我发现同吉姆相处很容易。
（2）it 作形式宾语，代替动词不定式（短语）
They found it pleasant to work with us Chinese.
他们发现与我们中国人一起工作很愉快。
it 作形式宾语
（3）it 作形式宾语，代替 v-ing(短语）
用 v-ing(短语）作真正的宾语时，其宾补通常是 no use, no good, a waste, hard work等。
I think it no good spending too much time watching TV.
我认为花太多时间看电视是没有好处的。
I feel it hard work persuading him into doing it.
我感觉说服他做那件事很难。
it 作形式宾语
（4）it 作形式宾语，代替从句
①在一些习惯用法中,it在hate,like,love,appreciate,enjoy,take,have等动词后作形式宾语，代替其后的宾语从句。
I hate it when he talks with his mouth full.
我讨厌他一边吃一边说话。
I like it when a book is so good that you cannot put it down.
我喜欢那种碰上好书时手不释卷的感觉。
it 作形式宾语
②在一些特殊结构中，用it作形式宾语。
take it for granted that...认为......是理所当然
see to it that...确保......
owe it to...that... 多亏....../幸亏......
We all take it for granted that James will win the game.
我们都确信詹姆斯将赢得这场比赛。
Would you see to it that she gets home early
你保证她早早到家，好吗？
it 作形式宾语
Vocabulary
1. issue
a key/sensitive/controversial issue 关键的/敏感的/有争议的问题
issue a passport/visa 签发护照/签证
issue a magazine发行一本杂志
issue a set of stamps发行一套邮票
练习：
The police __________ (issue) an appeal for witnesses before the reporters came.
had issued
Vocabulary
2. appropriate
be appropriate to/for sth 对……适合
It is appropriate (for sb) to do sth (对于某人来说)做某事合适
appropriately adv.恰当地
inappropriate adj.不合适的；不恰当的
练习：
现在发表演讲是不是时候？
________________________________________.
Is now an appropriate time to make a speech
Vocabulary
3. absorb
be/get absorbed in 全神贯注于
be absorbed into 被纳入/并入
absorption n.吸收；并入；全神贯注
练习：
Catherine was seated in the sofa, totally _________ (absorb) in the book about youth and love.
absorbed
Vocabulary
4. break down
break one's promise 食言
break away from 逃脱；挣脱
break in 强行进人；打断谈话
break into 强行闯入；突然开始笑、唱等
break off 停顿；使折断；突然终止
break out 爆发；突然发生
break through 突破；冲破；克服
break up 解散；（学校）放假；结束；破裂；粉碎坏回
练习：Don't break _____ when he is telling the story.
in
Exercise
1. No one found ____ strange that he should finish his huge pile of work in a single day.
2. He wants to make it fixed _____ the party is going to be held so that he can arrange his time for tomorrow.
3. Students feel it free ________ (choose) whatever class to take.
4. Mark found it excited that he _________ (go) to China as an exchange student next year.
it
when
to choose
would go
Rewrite the underlined parts using it as an empty object.
many people think it a good idea to keep this turtle as a pet
believe it no big issue to release them into the wild
Rewrite the underlined parts using it as an empty object.
people have found it a threat to other species to
release these turtles into the wild
Experts consider it important for owners to keep
their pets in an enclosed area
Look at the pictures of the Saihanba National Forest Park and describe its changes using it as an empty object where appropriate. You may refer to the words and expressions in the table for help.
Look at the pictures of the Saihanba National Forest Park and describe its changes using it as an empty object where appropriate. You may refer to the words and expressions in the table for help.
I think it a breakthrough to transform
a desert into a forest…
Look at the diagram and answer the questions. Pay attention to the words and expressions in bold.
1 What does the diagram show
2 What are the relationships between the living things
The diagram shows a food chain-the connection between the living things.
The living things are closely connected with each
other by the food they eat. Secondary consumers prey
on primary consumers,primary consumers feed on
producers,and producers absorb light from the sun,
and water and dissolved nutrients from the soil, which
are provided by decomposers.
Complete the passage with the correct form of the words and
expressions in Activity 5.
In a woodland ecosystem, trees and other plants are producers. They 1____________ water, and take in nutrients from the soil and energy from the sun. Insects are an example of a primary consumer. They 2____________ the producers to provide food for them, and are 3____________ by secondary consumers: small mammals and birds. They 4____________ the primary consumers. Fungi and bacteria are decomposers. They 5____________ animal waste and the remains of living things. The chemicals these decomposers 6____________ fertilise the soil and give the plants the nutrients they need to grow.
absorb
rely on
fed on
prey on
break down
release
Have you ever observed bees
What do you think about bees
Activity 7
Listen to the conversation and choose the true statements.
1 Bees are very important to our food supply because they provide honey.
2 The bee population is declining.
3 Without bees, humans would die out.
4 All human crops depend on bees for pollination.
5 If bees became extinct, other insects could pollinate enough crops.
6 Humans are responsible for the decline in the bee population.
Activity 8
Listen to the conversation and choose the true statements.
pesticides and climate change
declining very quickly
have fallen by 17%
be unable to reproduce
Other insects
bees are responsible for pollinating about 70 %
would die out
Now talk about the importance of bees.
Activity 9
Complete the boxes with the expressions from the conversation.
You must be kidding!
I don't believe it!
Are you sure about...
It's a fact!
Don't forget that...
Check it out for yourself...
According to statistics...
Activity 10
Work in pairs. Talk about what would happen to the ecosystem if another species died out. Use the words and expressions in this section.
Think & share
How could similar situations be avoided in the future
What language can you use to talk about cause and effect How would you apply it to your reading and writing
To avoid similar situations in the future, we should protect the natural ecosystem and be aware of the potential impact that human activities can have on ecosystems.
Exercise
1．Experts felt ________ necessary to come up with a plan to remove all the rabbits from the island.
A．that B．this C．it D．one
2．We think possible that you can finish the essay today.
A．it B．that C．them D．if
3．Don’t take _______ for granted _______ everyone should adore you.
A．that; what B．it; that
C．it; what D．that; which
Exercise
4．He makes ________ a rule _________ a diary every day.
A．this, to keep B．that, to keep
C．it, keeping D．it, to keep
5．Young people should be independent, and don’t take for granted that you can depend on your parents when in trouble.
A．one B．it
C．this D．that
6．We took it for granted ______ they would accept the proposal, so we think it no use ______ them eagerly.
A．if; convincing B．that; to convince
C．that; convincing D．if; to convince
Exercise
7．We find _______ difficult to talk to him about anything serious.
A．him B．he C．ourselves D．it
8．We all thought ______ a question ________we could raise enough money for the project.
A．that; that B．it; whether C．it; that D．that; whether
9．I’d appreciate________if you would turn out the lights. I’m sleepy.
A．one B．that
C．this D．it
10．No visitor would think _________ surprising that the island is a UNESCO World Heritage Site.
A．that B．it C．this D．what
Exercise
11．Industrial robots perform tasks that were ________ done by human operators.
A．ultimately B．incidentally C．previously D．subsequently
12．Every camera we sell comes with a two-year ______.
A．guarantee B．safety C．confirmation D．conservation
13．With the popularity of smart phones, people gradually lose the ______ for watching television, which makes TV a decoration of the house.
A．analysis B．appetite C．incident D．appreciation
14．Without the timely arrival of the rescuers, twenty miners ______ underground yesterday.
A．would have been trapped B．would be trapped
C．were trapped D．had been trapped
Exercise
15．The police set a ______ to catch the thieves.
A．plan B．device C．trap D．trick
16．What we say should be consistent with what we do. There should not be ________ in our words and actions.
A．conservation B．contradiction C．consequence D．consultation
17．Hiking by oneself can be fun and good for health. It may also be good for________building.
A．character B．fame C．reputation D．decrease
18．Individual contribution to this project is important to environmental ________.
A．challenge B．satisfaction C．conservation D．measure
Review the language points and complete the exercises.
Describe one of the cities using it as an empty subject where appropriate.Do online research if necessary.
Homework
See you next class!
Unit 5
A delicate world
It as an empty object and empty subject.
Look at the sentences from the interview and answer the questions.
1 What does “it” refer to in sentences (a) and (c)
“It” in sentence(a) refers to“the island is a UNESCO World Heritage Site”.
“It” in sentence (c) refers to “to come up with a planto remove all the rabbits from the island”
What is the difference between the sentences in each group
When the object of a sentence is a that-clause(b) or an infinitive (d), we sometimes use “it” as an empty object and put the real object later to keep balance. For example,sentence(a)uses “it’ as the empty object of “think”, referring to the real object: “the island is a UNESCO World Heritage Site”. Sentence (b) uses that-clause as the object of “think”.
it as an empty object—it 作形式宾语
当动词不定式（短语）、v-ing(短语）或从句作宾语时，为了保持句子结构的平衡，常用it作形式宾语，而将真正的宾语后置。此时的it无词义。
（1）常以it作形式宾语的动词有：feel, consider, find, believe, make, take, imagine, prove, think, suppose, regard, notice等。
I find it easy to get on with Jim.
我发现同吉姆相处很容易。
（2）it 作形式宾语，代替动词不定式（短语）
They found it pleasant to work with us Chinese.
他们发现与我们中国人一起工作很愉快。
it 作形式宾语
（3）it 作形式宾语，代替 v-ing(短语）
用 v-ing(短语）作真正的宾语时，其宾补通常是 no use, no good, a waste, hard work等。
I think it no good spending too much time watching TV.
我认为花太多时间看电视是没有好处的。
I feel it hard work persuading him into doing it.
我感觉说服他做那件事很难。
it 作形式宾语
（4）it 作形式宾语，代替从句
①在一些习惯用法中,it在hate,like,love,appreciate,enjoy,take,have等动词后作形式宾语，代替其后的宾语从句。
I hate it when he talks with his mouth full.
我讨厌他一边吃一边说话。
I like it when a book is so good that you cannot put it down.
我喜欢那种碰上好书时手不释卷的感觉。
it 作形式宾语
②在一些特殊结构中，用it作形式宾语。
take it for granted that...认为......是理所当然
see to it that...确保......
owe it to...that... 多亏....../幸亏......
We all take it for granted that James will win the game.
我们都确信詹姆斯将赢得这场比赛。
Would you see to it that she gets home early
你保证她早早到家，好吗？
it 作形式宾语
Vocabulary
1. issue
a key/sensitive/controversial issue 关键的/敏感的/有争议的问题
issue a passport/visa 签发护照/签证
issue a magazine发行一本杂志
issue a set of stamps发行一套邮票
练习：
The police __________ (issue) an appeal for witnesses before the reporters came.
had issued
Vocabulary
2. appropriate
be appropriate to/for sth 对……适合
It is appropriate (for sb) to do sth (对于某人来说)做某事合适
appropriately adv.恰当地
inappropriate adj.不合适的；不恰当的
练习：
现在发表演讲是不是时候？
________________________________________.
Is now an appropriate time to make a speech
Vocabulary
3. absorb
be/get absorbed in 全神贯注于
be absorbed into 被纳入/并入
absorption n.吸收；并入；全神贯注
练习：
Catherine was seated in the sofa, totally _________ (absorb) in the book about youth and love.
absorbed
Vocabulary
4. break down
break one's promise 食言
break away from 逃脱；挣脱
break in 强行进人；打断谈话
break into 强行闯入；突然开始笑、唱等
break off 停顿；使折断；突然终止
break out 爆发；突然发生
break through 突破；冲破；克服
break up 解散；（学校）放假；结束；破裂；粉碎坏回
练习：Don't break _____ when he is telling the story.
in
Exercise
1. No one found ____ strange that he should finish his huge pile of work in a single day.
2. He wants to make it fixed _____ the party is going to be held so that he can arrange his time for tomorrow.
3. Students feel it free ________ (choose) whatever class to take.
4. Mark found it excited that he _________ (go) to China as an exchange student next year.
it
when
to choose
would go
Rewrite the underlined parts using it as an empty object.
many people think it a good idea to keep this turtle as a pet
believe it no big issue to release them into the wild
Rewrite the underlined parts using it as an empty object.
people have found it a threat to other species to
release these turtles into the wild
Experts consider it important for owners to keep
their pets in an enclosed area
Look at the pictures of the Saihanba National Forest Park and describe its changes using it as an empty object where appropriate. You may refer to the words and expressions in the table for help.
Look at the pictures of the Saihanba National Forest Park and describe its changes using it as an empty object where appropriate. You may refer to the words and expressions in the table for help.
I think it a breakthrough to transform
a desert into a forest…
Look at the diagram and answer the questions. Pay attention to the words and expressions in bold.
1 What does the diagram show
2 What are the relationships between the living things
The diagram shows a food chain-the connection between the living things.
The living things are closely connected with each
other by the food they eat. Secondary consumers prey
on primary consumers,primary consumers feed on
producers,and producers absorb light from the sun,
and water and dissolved nutrients from the soil, which
are provided by decomposers.
Complete the passage with the correct form of the words and
expressions in Activity 5.
In a woodland ecosystem, trees and other plants are producers. They 1____________ water, and take in nutrients from the soil and energy from the sun. Insects are an example of a primary consumer. They 2____________ the producers to provide food for them, and are 3____________ by secondary consumers: small mammals and birds. They 4____________ the primary consumers. Fungi and bacteria are decomposers. They 5____________ animal waste and the remains of living things. The chemicals these decomposers 6____________ fertilise the soil and give the plants the nutrients they need to grow.
absorb
rely on
fed on
prey on
break down
release
Have you ever observed bees
What do you think about bees
Activity 7
Listen to the conversation and choose the true statements.
1 Bees are very important to our food supply because they provide honey.
2 The bee population is declining.
3 Without bees, humans would die out.
4 All human crops depend on bees for pollination.
5 If bees became extinct, other insects could pollinate enough crops.
6 Humans are responsible for the decline in the bee population.
Activity 8
Listen to the conversation and choose the true statements.
pesticides and climate change
declining very quickly
have fallen by 17%
be unable to reproduce
Other insects
bees are responsible for pollinating about 70 %
would die out
Now talk about the importance of bees.
Activity 9
Complete the boxes with the expressions from the conversation.
You must be kidding!
I don't believe it!
Are you sure about...
It's a fact!
Don't forget that...
Check it out for yourself...
According to statistics...
Activity 10
Work in pairs. Talk about what would happen to the ecosystem if another species died out. Use the words and expressions in this section.
Think & share
How could similar situations be avoided in the future
What language can you use to talk about cause and effect How would you apply it to your reading and writing
To avoid similar situations in the future, we should protect the natural ecosystem and be aware of the potential impact that human activities can have on ecosystems.
Exercise
1．Experts felt ________ necessary to come up with a plan to remove all the rabbits from the island.
A．that B．this C．it D．one
2．We think possible that you can finish the essay today.
A．it B．that C．them D．if
3．Don’t take _______ for granted _______ everyone should adore you.
A．that; what B．it; that
C．it; what D．that; which
Exercise
4．He makes ________ a rule _________ a diary every day.
A．this, to keep B．that, to keep
C．it, keeping D．it, to keep
5．Young people should be independent, and don’t take for granted that you can depend on your parents when in trouble.
A．one B．it
C．this D．that
6．We took it for granted ______ they would accept the proposal, so we think it no use ______ them eagerly.
A．if; convincing B．that; to convince
C．that; convincing D．if; to convince
Exercise
7．We find _______ difficult to talk to him about anything serious.
A．him B．he C．ourselves D．it
8．We all thought ______ a question ________we could raise enough money for the project.
A．that; that B．it; whether C．it; that D．that; whether
9．I’d appreciate________if you would turn out the lights. I’m sleepy.
A．one B．that
C．this D．it
10．No visitor would think _________ surprising that the island is a UNESCO World Heritage Site.
A．that B．it C．this D．what
Exercise
11．Industrial robots perform tasks that were ________ done by human operators.
A．ultimately B．incidentally C．previously D．subsequently
12．Every camera we sell comes with a two-year ______.
A．guarantee B．safety C．confirmation D．conservation
13．With the popularity of smart phones, people gradually lose the ______ for watching television, which makes TV a decoration of the house.
A．analysis B．appetite C．incident D．appreciation
14．Without the timely arrival of the rescuers, twenty miners ______ underground yesterday.
A．would have been trapped B．would be trapped
C．were trapped D．had been trapped
Exercise
15．The police set a ______ to catch the thieves.
A．plan B．device C．trap D．trick
16．What we say should be consistent with what we do. There should not be ________ in our words and actions.
A．conservation B．contradiction C．consequence D．consultation
17．Hiking by oneself can be fun and good for health. It may also be good for________building.
A．character B．fame C．reputation D．decrease
18．Individual contribution to this project is important to environmental ________.
A．challenge B．satisfaction C．conservation D．measure
Review the language points and complete the exercises.
Describe one of the cities using it as an empty subject where appropriate.Do online research if necessary.
Homework
See you next class!