人教版（2019）选择性必修第三册 Unit 2 Healthy Lifestyle Discover useful structures 课件(共18张PPT)
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| 名称 | 人教版（2019）选择性必修第三册 Unit 2 Healthy Lifestyle Discover useful structures 课件(共18张PPT) |  | |
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| 资源类型 | 教案 | ||
| 版本资源 | 人教版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-02-28 07:48:51 | ||
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(共18张PPT)
Unit 2 Healthy Lifestyle
Period 4 Discovering Useful Structures
To-infinitive as the subject
Learning Objects:
1. To know the different forms of the infinitive;
2. To master the use of the Infinitive as subject;
3. To use the Infinitive as subject in the specific context correctly.
(1)Perhaps the best way to understand Western art is ___________(look) at the development of Western painting over the centuries.
(2)During the Middle Ages，the purpose of Western art was _____________ (teach) people about Christianity.
(3)In this work，Monet’s aim was ____________(convey) the light and movement in the scene.
(4) Her ambition is _____________(put) her new ideas into practice.
(5) What they attempted to do was no longer ____________(show) reality, but instead to ask the question, “What is art ”
Review
to look
to teach
to convey
to put
show
1. To change bad habits is never easy.
2. It took the surgeon three hours to finish my mother’s lung surgery.
3.To join the people’s Liberation Army, it is required for men to shave off their beards.
4. It was not polite to disturb your neighbors with loud music last night.
Look at the following sentences and pay attention to the italicized infinitives, and tell their meanings and functions.
The infinitive in each sentence functions as the subject of the sentence.
Lead-in
Early to bed and ealy to rise makes a man healthy, wealthy and wise.
Not to advance is to go back.
To save time is to lengthen life.
It is easy to open a shop, but hard to keep it always open.
It’s hard to please all.
Lead-in
1. 单个不定式作主语，通常位于句首，表示具体的某次动作，谓语动词用单数形式。
To get enough protein each day is beneficial to our health.
To get good grades requires a lot of hard work.
To learn a skill is very important for everyone in society.
动词不定式做主语
Presentation
2. 当主语较长，谓语较短时，常用it作形式主语放在句首，而将真正的主语—不定式放到谓语的后面
It is not right for people with the virus to go to public places.
It was not polite to disturb your neighbours with loud music last night.
To join the People’s LiberationArmy , it is a rule for men to shave off their beards.
It took the surgeon three hours to finish my mother’s lung surgery
Presentation
it作形式主语代替真正主语不定式常见于以下情况中：
It is + adj. + for/of sb. to do sth.
It is + n. + (for sb.) to do sth.
It takes/took/will take sb. some time/money to do sth.
Presentation
① It is + adj. + for /of sb. + to do sth.
形容词表示事物或行为的特点或性质，介词用for，easy, hard, difficult, possible, important, impossible,necessary, good, bad, exciting, interesting, surprising等。
形容词表示人的品格或特点，介词用of，如 kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等
It is necessary for us to prevent the war breaking out.
It is too impolite of you to speak to an outstanding teacher like this.
Presentation
② It +be+ 名词+to do sth. 做某事是……
常见的名词有：pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。
It’s my duty to take good care of my younger sister.
It must be great fun to fly to the moon in a spaceship.
It is an honour to be invited to contribute to your magazine.
Presentation
③ It takes sb. some time to do sth.
做某事花费某人多长时间
It took me more than an hour to do my homework yesterday evening.
Presentation
疑问词 + 不定式
（1）可用于该结构的疑问词
疑问代词：who，whom，what，which
疑问副词：when，where，how
（2）常接该结构的动词：know，see，decide，tell，ask，consider，explain，learn，wonder
（3）该结构的句法功能：主语、宾语和表语
How to construct the theoretical framework is very important.
I know where to find that patriotic young man.
The question is when to start developing such a vaccine.
Presentation
（1）Sometimes it’s better （remain） silent.
（2）Although is a hard task to protect our environment，we can’t help but go ahead.
（3） （control） the air pollution is necessary.
（4）It was foolish him to endanger his life in that way.
（5）Don’t you think it is rude him to ask a lady her age
（6）It is difficult him to live on such a small salary.
to remain
it
To control/Controlling
of
of
for
不定式短语作独立成分
通常位于句首，有时位于句中或句末，要用逗号同其他句子成分隔开
To tell the truth，I don’t like the gifted actress in the movie.
常用短语
to sum up 总而言之 to be brief 简言之
to tell the truth 说实话 to be exact 确切地说
to conclude 总而言之，最后 to be frank 坦白地说
to begin/start with 首先 to be honest 说老实话
Presentation
（1） （总而言之），most of the committee members supported the idea but a few were against it.
（2） （简言之），he was happy with the result.
（3）She wrote， （确切地说），ten novels in her lifetime.
（4） （首先），he’s too young for that kind of job.
（5） （说老实话），I don’t really want to go to the party tonight.
To sum up/To conclude
To be brief
to be exact
To begin/start with
To be honest
It is important to avoid passive cigarette smoking.
important/avoid/passive cigarette smoking
useful/turn to/fitness consultant/for advice
It will take an hour for a nutrition specialist to make a balanced diet menu for you.
will take/nutrition specialist/a balanced diet menu/make /an hour/for you.
It is useful to turn to a fitness consultant for advice.
illegal /dangerous/take /drugs
It is dangerous to take illegal drugs.
harmful /skip breakfast /often
It is harmful to skip breakfast（too）often.
语法填空
Mike drove to a remote border town alone. He didn’t stop the car 1. ________ (take) a break although he was feeling tired. As a result, a traffic accident occurred, which caused him 2. ______ __ (trap) inside the car. Fortunately a girl who happened to pass by volunteered 3. ________ (save) him, only 4. ________ (find) Mike was completely locked in the car.
After calling an ambulance, she managed 5. ________ (give) him first aid, using the method she had learned at school. Soon, Mike was rushed to hospital in an ambulance. It took him three months 6. _______ _ (recover) from his injuries.
The girl named Mary felt pleased 7. _ _______ (do) such a great thing, though she realized the car may have exploded. When interviewed, she said, “I’ve also met with a traffic accident. A kind passer-by saved my life but he was killed. I was the only one 8. _______ _ (survive) the crash. The man was said 9. _ _________________ (work) on the road helping people in need for ten years. I was too moved even to speak when hearing the story. Therefore, I determined 10. ________ (stay) here and give people in need a helping hand.”
to stay
to take
to be trapped
to save
to find
to give
to recover
to have done
to have survived
to have worked
Thank you !
Unit 2 Healthy Lifestyle
Period 4 Discovering Useful Structures
To-infinitive as the subject
Learning Objects:
1. To know the different forms of the infinitive;
2. To master the use of the Infinitive as subject;
3. To use the Infinitive as subject in the specific context correctly.
(1)Perhaps the best way to understand Western art is ___________(look) at the development of Western painting over the centuries.
(2)During the Middle Ages，the purpose of Western art was _____________ (teach) people about Christianity.
(3)In this work，Monet’s aim was ____________(convey) the light and movement in the scene.
(4) Her ambition is _____________(put) her new ideas into practice.
(5) What they attempted to do was no longer ____________(show) reality, but instead to ask the question, “What is art ”
Review
to look
to teach
to convey
to put
show
1. To change bad habits is never easy.
2. It took the surgeon three hours to finish my mother’s lung surgery.
3.To join the people’s Liberation Army, it is required for men to shave off their beards.
4. It was not polite to disturb your neighbors with loud music last night.
Look at the following sentences and pay attention to the italicized infinitives, and tell their meanings and functions.
The infinitive in each sentence functions as the subject of the sentence.
Lead-in
Early to bed and ealy to rise makes a man healthy, wealthy and wise.
Not to advance is to go back.
To save time is to lengthen life.
It is easy to open a shop, but hard to keep it always open.
It’s hard to please all.
Lead-in
1. 单个不定式作主语，通常位于句首，表示具体的某次动作，谓语动词用单数形式。
To get enough protein each day is beneficial to our health.
To get good grades requires a lot of hard work.
To learn a skill is very important for everyone in society.
动词不定式做主语
Presentation
2. 当主语较长，谓语较短时，常用it作形式主语放在句首，而将真正的主语—不定式放到谓语的后面
It is not right for people with the virus to go to public places.
It was not polite to disturb your neighbours with loud music last night.
To join the People’s LiberationArmy , it is a rule for men to shave off their beards.
It took the surgeon three hours to finish my mother’s lung surgery
Presentation
it作形式主语代替真正主语不定式常见于以下情况中：
It is + adj. + for/of sb. to do sth.
It is + n. + (for sb.) to do sth.
It takes/took/will take sb. some time/money to do sth.
Presentation
① It is + adj. + for /of sb. + to do sth.
形容词表示事物或行为的特点或性质，介词用for，easy, hard, difficult, possible, important, impossible,necessary, good, bad, exciting, interesting, surprising等。
形容词表示人的品格或特点，介词用of，如 kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等
It is necessary for us to prevent the war breaking out.
It is too impolite of you to speak to an outstanding teacher like this.
Presentation
② It +be+ 名词+to do sth. 做某事是……
常见的名词有：pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。
It’s my duty to take good care of my younger sister.
It must be great fun to fly to the moon in a spaceship.
It is an honour to be invited to contribute to your magazine.
Presentation
③ It takes sb. some time to do sth.
做某事花费某人多长时间
It took me more than an hour to do my homework yesterday evening.
Presentation
疑问词 + 不定式
（1）可用于该结构的疑问词
疑问代词：who，whom，what，which
疑问副词：when，where，how
（2）常接该结构的动词：know，see，decide，tell，ask，consider，explain，learn，wonder
（3）该结构的句法功能：主语、宾语和表语
How to construct the theoretical framework is very important.
I know where to find that patriotic young man.
The question is when to start developing such a vaccine.
Presentation
（1）Sometimes it’s better （remain） silent.
（2）Although is a hard task to protect our environment，we can’t help but go ahead.
（3） （control） the air pollution is necessary.
（4）It was foolish him to endanger his life in that way.
（5）Don’t you think it is rude him to ask a lady her age
（6）It is difficult him to live on such a small salary.
to remain
it
To control/Controlling
of
of
for
不定式短语作独立成分
通常位于句首，有时位于句中或句末，要用逗号同其他句子成分隔开
To tell the truth，I don’t like the gifted actress in the movie.
常用短语
to sum up 总而言之 to be brief 简言之
to tell the truth 说实话 to be exact 确切地说
to conclude 总而言之，最后 to be frank 坦白地说
to begin/start with 首先 to be honest 说老实话
Presentation
（1） （总而言之），most of the committee members supported the idea but a few were against it.
（2） （简言之），he was happy with the result.
（3）She wrote， （确切地说），ten novels in her lifetime.
（4） （首先），he’s too young for that kind of job.
（5） （说老实话），I don’t really want to go to the party tonight.
To sum up/To conclude
To be brief
to be exact
To begin/start with
To be honest
It is important to avoid passive cigarette smoking.
important/avoid/passive cigarette smoking
useful/turn to/fitness consultant/for advice
It will take an hour for a nutrition specialist to make a balanced diet menu for you.
will take/nutrition specialist/a balanced diet menu/make /an hour/for you.
It is useful to turn to a fitness consultant for advice.
illegal /dangerous/take /drugs
It is dangerous to take illegal drugs.
harmful /skip breakfast /often
It is harmful to skip breakfast（too）often.
语法填空
Mike drove to a remote border town alone. He didn’t stop the car 1. ________ (take) a break although he was feeling tired. As a result, a traffic accident occurred, which caused him 2. ______ __ (trap) inside the car. Fortunately a girl who happened to pass by volunteered 3. ________ (save) him, only 4. ________ (find) Mike was completely locked in the car.
After calling an ambulance, she managed 5. ________ (give) him first aid, using the method she had learned at school. Soon, Mike was rushed to hospital in an ambulance. It took him three months 6. _______ _ (recover) from his injuries.
The girl named Mary felt pleased 7. _ _______ (do) such a great thing, though she realized the car may have exploded. When interviewed, she said, “I’ve also met with a traffic accident. A kind passer-by saved my life but he was killed. I was the only one 8. _______ _ (survive) the crash. The man was said 9. _ _________________ (work) on the road helping people in need for ten years. I was too moved even to speak when hearing the story. Therefore, I determined 10. ________ (stay) here and give people in need a helping hand.”
to stay
to take
to be trapped
to save
to find
to give
to recover
to have done
to have survived
to have worked
Thank you !