Unit 9 Human Biology Lesson 1 Focus on Language 课件（共18张，内嵌视频）2024-2025学年高二英语北师版（2019）选择性必修3
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| 名称 | Unit 9 Human Biology Lesson 1 Focus on Language 课件（共18张，内嵌视频）2024-2025学年高二英语北师版（2019）选择性必修3 |  | |
| 格式 | pptx | ||
| 文件大小 | 16.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 北师大版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2025-05-01 20:18:16 | ||
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(共18张PPT)
Unit 9 Human Biology
Lesson 1 Grammar Focus
To practise using verbs in the perfect tense.
Learning objectives
Watch the video. What’s the main idea
Do you think cloning is a good idea Use what you have learnt to try to persuade someone to accept your point of view.
Views It’s a good idea: It’s a bad idea:
the potential of cloning scientists’ devotion Einstein’s quote … clones’ health problems
moral concerns
Einstein’s quote
…
Revision
Cloning is a good idea
Cloning might lead to cures for various diseases and may also offer clues on how to prevent the aging process. Besides, cloning can change animals’ genes to suit research needs so as to save research time, produce more accurate results and lead to more effective treatments. At the same time, it also reduces the number of animals required for testing. So it benefits not only mankind but also animals in a way. According to Einstein, science is just a tool. So, we should regulate the way we use tools instead of giving them up.
Cloning is a bad idea
Clones always develop a similar pattern of health problems and die at an early age, which is an unsolved problem. Besides, cloning raises moral concerns. Some believe it is bound to lead to cloning of other species. The identity of clones is also questioned. Are they objects or individuals with identity Will the technology be abused by some organisations According to Einstein, used in a wrong way, useful tools can also kill. So, we should stop cloning so as to avoid the potential problems.
Do you think cloning is a good idea
In the last few years, China has made great achievements in environmental protection. The government has closed some heavily polluting factories down since 2012. So the air has become much cleaner to breathe so far.
Chinese culture has become an interest for people all over the world since the Shanghai Expo and many foreigners are discovering the history of China.
Besides, the Belt and Road Initiative has improved connection among the countries. China has become one of the most responsible global leaders the whole world has seen.
Read the passage quickly. Underline the present perfect tense and circle time adverbials.
Observing
现在完成时是过去的动作或状态持续到现在，对现在造成的影响，可能持续发生下去。其构成为：主语+ have/has +动词-ed形式。
现在完成时
1. 强调过去发生的动作对现在产生的结果或影响。
用法
past
now
Yesterday, we cleaned the classroom.
Now, the classroom is clean because we have cleaned it.
Exploring the rules
2. 强调动作或状态发生于过去一直延续到现在，且有可能继续下去，与表示持续的时间状语连用。表示持续动作或状态的动词多是延续性动词。例如：
past
future
now
came
live
has lived
Daniel has lived in Beijing since he came to China.
3.现在完成时往往同表示不确定的过去时间状语连用，如already, yet, just, before, recently, still, lately等标志词。例如：
He has already got a chance to go abroad.
4. 现在完成时常常与表示频度的时间状语连用，如often, sometimes, ever, never, twice, on several occasion等。例如：
George has met that gentleman on several occasions.
5. 瞬间性动词如 arrive, join, die, get, come, sell, leave, marry 等，以及终止性动词如start, begin, finish等，在现在完成时的肯定形式中不能与“for + 一段时间”的时间状语连用，但可以用在否定句或这些动词对应的状态动词中。例如：
He has borrowed the book for two months.
He has kept the book for 2 months.
现在完成进行时
现在完成进行时表示动作从某一时间开始，一直持续到现在，或者刚刚终止，或者可能仍然要继续下去。其构成为：主语+have/has+been+动词-ing (延续性动词)。
用法
1. 表示从过去某时开始一直持续到现在的动作，并且还将持续下去。例如：
The Chinese have been making paper for two thousand years.（动作还将继续下去）
2. 表示在说话时刻之前到现在正在进行的动作。例如：
We have been waiting for you for half an hour. (人还没到，如同在电话里说的，还会继续等)
Grammar—The Perfect
过去完成时
过去完成时表示过去某一时间前就已经发生或完成了的动作，对过去的某一点造成的某种影响或是结果，用来指在另一个过去行动之前就已经完成了的事件。其构成为：主语+had+动词-ed形式。
用法
1. 过去完成时表示在过去的事件之前发生的事件或存在的状态。
例如：The police arrested the man who had broken into a jewellery shop.
2. 过去完成时和一般过去时用在同一个句子中体现过去事件发生的顺序。
试比较：
When I arrived, she left.
When I arrived, she had left.
I arrived and then she left.
She left before I arrived.
Grammar—The Perfect
过去完成进行时
过去完成进行时强调动作从过去的过去开始一直延续到过去某个时间点。在过去某个时间点时，这个动作可能刚刚停止，也可能仍然在进行。其构成为：主语+had been+动词-ing形式。
用法
1. 过去完成进行时表示过去某一时间之前一直进行的动作。
例如：They had only been waiting for the bus a few minutes when it came.（车来之前一直在等）
2. 过去完成进行时表示反复的动作。
例如： He had been mentioning your name to me.
（过去多次向我提到）
Grammar—The Perfect
3.过去完成进行时还常用于间接引语中。
例如：
The doctor asked what he had been eating.
I asked where they had been staying all those days.
4.过去完成进行时之后也可接具有“突然” 之意的when从句。
例如：
She had only been reviewing her lessons for a short while when her little sister interrupted her.
I had only been reading a few minutes when he came in.
Grammar—The Perfect
1. To my great joy, I got a chance to take a photo with Andy after the concert, which I _________________________ (look forward to) for years.
2. China __________ (see) a sharp increase in the number of aged people over the past decade.
3. Housing prices __________________ (increase) since a few years ago. Therefore, it’s time that the central government took some measures to bring them under control.
4. When my parents first came to the city, they often went to neighbors for a talk, just as they ___________ (do) in the countryside.
5. Good Heavens! You are here, Mary! Your parents told me this morning that they were worried about you and they _________________ (expect) you back the whole night.
6. When I entered the step-classroom, the lecture _________ (begin) and the people were listening attentively.
Complete the sentences with the correct forms of the words in brackets.
had been looking forward to
has seen
have been increasing
had done
had been expecting
had begun
Practice
Complete the passage with the proper form of the words in brackets.
On Thursday, the Institute of Neuroscience announced it 1 __________ (clone) two monkeys using non-reproductive cells. It is reported that researchers all around the world 2 __________________ (conduct) tests on animals, such as mice and dogs, for many years but couldn’t find a way to clone monkeys. The news of the successful cloning 3 ___________ (attract) attention from around the world. However, cloning primates 4 ________________ (also raise) ethical concerns. For example, some people 5 __________________ (discuss) issues concerning how clones will be treated in society.
had cloned
have been conducting
have also raised
have been discussing
has attracted
Applying the rules
文中表达：
文章脉络
HOW
Definition
Cloning is the process of making an exact copy of ... either naturally or artificially ...
Natural cloning has been going on for generations.
Another example of natural cloning ..., who are produced from the same egg
语篇研读——To clone or not to clone
文中表达：
文章脉络
HOW
The first successfully cloned animal was ... in 1996.
At first, Dolly grew normally, but later she ...
Successful examples
After Dolly, scientists have cloned more than 20 mammal species, including ...
In January 2018, the cloning of two long-tailed monkeys ... was announced by Chinese ...
They were the first-ever primates ... to have been cloned!
... failures before they eventually found a way to successfully clone ...
语篇研读——To clone or not to clone
文中表达：
文章脉络
HOW
The successful cloning of primates has led to worldwide praise ...
This could help save research time ... lead to more effective treatments
Opinions
however, continues to be an issue that causes ...
While some people believe it is crucial for ... others raise moral concerns.
语篇研读——To clone or not to clone
Unit 9 Human Biology
Lesson 1 Grammar Focus
To practise using verbs in the perfect tense.
Learning objectives
Watch the video. What’s the main idea
Do you think cloning is a good idea Use what you have learnt to try to persuade someone to accept your point of view.
Views It’s a good idea: It’s a bad idea:
the potential of cloning scientists’ devotion Einstein’s quote … clones’ health problems
moral concerns
Einstein’s quote
…
Revision
Cloning is a good idea
Cloning might lead to cures for various diseases and may also offer clues on how to prevent the aging process. Besides, cloning can change animals’ genes to suit research needs so as to save research time, produce more accurate results and lead to more effective treatments. At the same time, it also reduces the number of animals required for testing. So it benefits not only mankind but also animals in a way. According to Einstein, science is just a tool. So, we should regulate the way we use tools instead of giving them up.
Cloning is a bad idea
Clones always develop a similar pattern of health problems and die at an early age, which is an unsolved problem. Besides, cloning raises moral concerns. Some believe it is bound to lead to cloning of other species. The identity of clones is also questioned. Are they objects or individuals with identity Will the technology be abused by some organisations According to Einstein, used in a wrong way, useful tools can also kill. So, we should stop cloning so as to avoid the potential problems.
Do you think cloning is a good idea
In the last few years, China has made great achievements in environmental protection. The government has closed some heavily polluting factories down since 2012. So the air has become much cleaner to breathe so far.
Chinese culture has become an interest for people all over the world since the Shanghai Expo and many foreigners are discovering the history of China.
Besides, the Belt and Road Initiative has improved connection among the countries. China has become one of the most responsible global leaders the whole world has seen.
Read the passage quickly. Underline the present perfect tense and circle time adverbials.
Observing
现在完成时是过去的动作或状态持续到现在，对现在造成的影响，可能持续发生下去。其构成为：主语+ have/has +动词-ed形式。
现在完成时
1. 强调过去发生的动作对现在产生的结果或影响。
用法
past
now
Yesterday, we cleaned the classroom.
Now, the classroom is clean because we have cleaned it.
Exploring the rules
2. 强调动作或状态发生于过去一直延续到现在，且有可能继续下去，与表示持续的时间状语连用。表示持续动作或状态的动词多是延续性动词。例如：
past
future
now
came
live
has lived
Daniel has lived in Beijing since he came to China.
3.现在完成时往往同表示不确定的过去时间状语连用，如already, yet, just, before, recently, still, lately等标志词。例如：
He has already got a chance to go abroad.
4. 现在完成时常常与表示频度的时间状语连用，如often, sometimes, ever, never, twice, on several occasion等。例如：
George has met that gentleman on several occasions.
5. 瞬间性动词如 arrive, join, die, get, come, sell, leave, marry 等，以及终止性动词如start, begin, finish等，在现在完成时的肯定形式中不能与“for + 一段时间”的时间状语连用，但可以用在否定句或这些动词对应的状态动词中。例如：
He has borrowed the book for two months.
He has kept the book for 2 months.
现在完成进行时
现在完成进行时表示动作从某一时间开始，一直持续到现在，或者刚刚终止，或者可能仍然要继续下去。其构成为：主语+have/has+been+动词-ing (延续性动词)。
用法
1. 表示从过去某时开始一直持续到现在的动作，并且还将持续下去。例如：
The Chinese have been making paper for two thousand years.（动作还将继续下去）
2. 表示在说话时刻之前到现在正在进行的动作。例如：
We have been waiting for you for half an hour. (人还没到，如同在电话里说的，还会继续等)
Grammar—The Perfect
过去完成时
过去完成时表示过去某一时间前就已经发生或完成了的动作，对过去的某一点造成的某种影响或是结果，用来指在另一个过去行动之前就已经完成了的事件。其构成为：主语+had+动词-ed形式。
用法
1. 过去完成时表示在过去的事件之前发生的事件或存在的状态。
例如：The police arrested the man who had broken into a jewellery shop.
2. 过去完成时和一般过去时用在同一个句子中体现过去事件发生的顺序。
试比较：
When I arrived, she left.
When I arrived, she had left.
I arrived and then she left.
She left before I arrived.
Grammar—The Perfect
过去完成进行时
过去完成进行时强调动作从过去的过去开始一直延续到过去某个时间点。在过去某个时间点时，这个动作可能刚刚停止，也可能仍然在进行。其构成为：主语+had been+动词-ing形式。
用法
1. 过去完成进行时表示过去某一时间之前一直进行的动作。
例如：They had only been waiting for the bus a few minutes when it came.（车来之前一直在等）
2. 过去完成进行时表示反复的动作。
例如： He had been mentioning your name to me.
（过去多次向我提到）
Grammar—The Perfect
3.过去完成进行时还常用于间接引语中。
例如：
The doctor asked what he had been eating.
I asked where they had been staying all those days.
4.过去完成进行时之后也可接具有“突然” 之意的when从句。
例如：
She had only been reviewing her lessons for a short while when her little sister interrupted her.
I had only been reading a few minutes when he came in.
Grammar—The Perfect
1. To my great joy, I got a chance to take a photo with Andy after the concert, which I _________________________ (look forward to) for years.
2. China __________ (see) a sharp increase in the number of aged people over the past decade.
3. Housing prices __________________ (increase) since a few years ago. Therefore, it’s time that the central government took some measures to bring them under control.
4. When my parents first came to the city, they often went to neighbors for a talk, just as they ___________ (do) in the countryside.
5. Good Heavens! You are here, Mary! Your parents told me this morning that they were worried about you and they _________________ (expect) you back the whole night.
6. When I entered the step-classroom, the lecture _________ (begin) and the people were listening attentively.
Complete the sentences with the correct forms of the words in brackets.
had been looking forward to
has seen
have been increasing
had done
had been expecting
had begun
Practice
Complete the passage with the proper form of the words in brackets.
On Thursday, the Institute of Neuroscience announced it 1 __________ (clone) two monkeys using non-reproductive cells. It is reported that researchers all around the world 2 __________________ (conduct) tests on animals, such as mice and dogs, for many years but couldn’t find a way to clone monkeys. The news of the successful cloning 3 ___________ (attract) attention from around the world. However, cloning primates 4 ________________ (also raise) ethical concerns. For example, some people 5 __________________ (discuss) issues concerning how clones will be treated in society.
had cloned
have been conducting
have also raised
have been discussing
has attracted
Applying the rules
文中表达：
文章脉络
HOW
Definition
Cloning is the process of making an exact copy of ... either naturally or artificially ...
Natural cloning has been going on for generations.
Another example of natural cloning ..., who are produced from the same egg
语篇研读——To clone or not to clone
文中表达：
文章脉络
HOW
The first successfully cloned animal was ... in 1996.
At first, Dolly grew normally, but later she ...
Successful examples
After Dolly, scientists have cloned more than 20 mammal species, including ...
In January 2018, the cloning of two long-tailed monkeys ... was announced by Chinese ...
They were the first-ever primates ... to have been cloned!
... failures before they eventually found a way to successfully clone ...
语篇研读——To clone or not to clone
文中表达：
文章脉络
HOW
The successful cloning of primates has led to worldwide praise ...
This could help save research time ... lead to more effective treatments
Opinions
however, continues to be an issue that causes ...
While some people believe it is crucial for ... others raise moral concerns.
语篇研读——To clone or not to clone