人教版（2019）选择性必修第三册Unit 1 Art Discover Useful Structures 动词不定式作表语课件(共23张PPT)

(共23张PPT)
Infinitives as the predicative
（不定式 to do 做表语）
Today we are talking about our future plans.
Interviewer
Interviewee
Good afternoon! Are you a student in this high school
Yes, I’m in Senior Two.
I’m a student reporter. Can I ask you some questions about your future plans
Yes, of course!
Interviewer
Interviewee
What’s your ambition
Well... My ambition is to be admitted into the Qinghua University.
Sounds great! Now I have another question...
Interviewer
Interviewee
Do you have any plans, like, for today
Well... My plan today is to finish my homework carefully.
My ambition is to be admitted into university.
My plan is to finish my homework carefully.
以上句子中，框起来的部分为_____________________，在句中都充当_____语。
动词不定式 (to do)短语
表
动词不定式作表语：
am/is/are/was/were/其他系动词 + 不定式（短语）
常用不定式作表语的情况
（1）主语是以下名词时：
目标与计划: aim, goal, purpose, plan, intention
梦想与希望: dream, wish, hope, ambition
建议: suggestion, advice, idea
职责: duty, job, role, task
其他: difficulty, method, problem, way
表示主语的具体内容、目的、期望、预期结果；
表示将来，为“即将”之意。
My dream is ___________(become) a painter.
My suggestion about improving English is __________(memorize) words every day.
My duty is ____________(help) my students improve their English.
My next plan is _____________(take) part in a competition.
to become 目的/期望
to memorize 具体内容
to help 具体内容
to take 即将发生
1. The motto (座右铭) of the little boy who was suffering from a disease was _______ (live) one day at a time.
2. The next step is ________ sure that you know exactly what is required.
3. The purpose of education is ___________ (develop) a fine personality in children.
to live
to make
to develop
Interviewer
Interviewee
How are you going to achieve your goal
All I should do is (to) study harder!
Interviewer
Interviewee
What might be difficult for you
One of the biggest difficulties is to memorize English new words...
Interviewer
Interviewee
Yes, there are so many English words. So, how are you going to deal with them
The best way to learn new words is to read more. I’m trying.
（2）当主语包含定语从句且其先行词为代词_____或者主语被___________________或形容词________修饰时，其后可接“系动词+不定式”作句子的表语。
All he wanted was _______________. 他只想一个人待着。
The least I can do to help is ________________.
我所能帮的最起码的事是借给她一辆车。
all
only, first, one, least
最高级
to stay alone
to lend her a car
All I should do is (to) study harder and harder!
One of the biggest challenges is to memorize new words.
The best way to learn new words is to read more.
1. Medical experts say the most effective way to prevent the spread of disease is ________(wash) our hands frequently.
2. The most difficult thing is_______ (get) this company running smoothly.
to wash
to get
Interviewer
Interviewee
If you meet something difficult, what you need is to ask your teacher for help.
Yes, your advice is useful.
Thank you very much. I hope you can achieve your ambition! Goodbye!
（3）以What引导的主语从句，常用不定式作表语，说明主语的内容。
What I suggest is to ask your friends and teachers for help.
What he wants is to solve the problem.
What matters most is to concentrate on your favourite things.
What you need is to ask your teacher for help.
4. 不定式作表语，可以省略to的情况
当主语中有do的某种形式时，作表语的不定式可以省略to。
eg :
What you should do next is (to) help him with his English.
The only thing he can do now is (to) give up the plan.
All I should do is (to) study harder and harder!
What I want to do is _______ (work) in the computer industry when I grow up.
前有do, 后省to
work
1.The boy was _____________ (blame)for what he had done.
2.You appear ___________________ (travel) a lot in the past few years.
to blame
to have travelled
*不定式表示的动作已发生（在谓语动词之前），则用完成式：to have done （主动）, to have been done（被动）。
*一些单词用不定式的主动形式表被动。
5. 不定式作表语其他特殊情况
不定式作表语 强调的是________________________的动作
动名词作表语 强调的是_______________________的动作
①Our work is (serve)the people.
② My job today is ___________(clean) the classroom.
His job is to paint the walls within two hours.
His job is painting walls.
目前的工作
日常的工作
serving
to clean
一次性、具体的、将要发生
一般性、抽象的、经常发生
不定式(to do)做表语和动名词(-ing)做表语的区别
动词不定式作表语
1. 当主语是建议、目标与计划、梦想与愿望、职责时，表示主语的内容，
2.当主语包含定语从句且其先行词为代词all
3. 以What引导的主语从句，说明主语的内容。
Summary
*前有do，后省to
to do vs. doing
*特殊情况
Activity 3. Matching the sentences
The young singer’s intention of performing the song was
The best way to do business is
What the survivors attempted to do was
The main purpose of art education in schools is
The aim of the two leaders at the conference was
to build trust between you and your client.
to achieve permanent peace between their two countries.
to build a memorial to the heroes who saved their lives.
to share his love for rock music with his fans.
G. to inspire students to
be creative.
For a humble person, one of the hardest things might be
When you are faced with a serious decision, my suggestion is
The mother believes her duty is
All he wanted after a tiring day was
E. to be left alone.
F. to criticize other people.
H. to listen to your own inner voice.
I. to raise her son to become a man with a noble mind and a generous heart.
Today we are attending an interview about your future plans.
Interviewer
OK, now comes your turn. Can you answer my questions
My biggest dream / ambition in life is to ... .
(I think) All I have to do is ... .
My plan is to ... .
(I think) one of the hardest thing might be ... .
(I guess) the best way to ... is to ... .
P5 Ex.3
Try to write something about your future plans!
Homework
1.
2.
3.