《英语》（选修·第一册）
Unit 4 Fun with science
Integrated skills (I)
I. Learning objectives
By the end of the lesson, students will be able to:
1. read a physics lecture transcript about friction;什么叫系统
2. give the definition of friction and tell how 高数people learnt about it in history;
3. describe when friction is uful and when friction is not necessary;
4. listen to a talk about an interview about friction;
5. learn the vocabulary: resist, *texture, *lubrication.
II. Key competence focus
1. Develop the techniques of flexible u of language.
2. Improve the power of listening comprehension.
3. Practice the skills of reading a popular science article.
III. Predicted area of difficulty
1. Applying the listening strategies.
2. Understanding the importance of frication.
IV. Teaching procedures
T Greet the class.
T: Class begins. Good morning/afternoon!
Step 1 Revision
1. Revi the subjunctive mood learnt last period.
Fill in the blanks with proper forms of the (given) words.
1) If you should be passing our hou, _________ (do) come in and e us.
1) do
2) It’s raining. How I wish it _________ (be) fine today.
2) were
3) I wish the rain _________ (stop) to take me away soon.
3)感同身受什么意思 would/could/might stop
4) How I wish I _________ (take) your advice 宝贵意见last year.
4) had taken
5) I’d rather you _________ (stay) here for tonight to have a chat with me.
5) stayed
6) He walked as though he _________ (break) his leg.
6) had broken
7) We requested that he _________ (make) some suggestions before we went on with our work.
7) make/should make
8) It will be desired that she _________ (finish) her homework this afternoon.
8) (should) finish
【设计意图：上一节重点是学习和应用名词性从句和含蓄条件虚拟语气，这项练习帮助学生复习这两块知识点。此项练习也可作为限时过关检测在课堂使用。】
2. Revi the words and phras learnt last period.
Guess the words in new context.
1) The kittens look exactly alike ─ how can you tell which is which?
A. similar B. lovely C. lively D. awake
2) The crowd melted away as soon as the police arrived.
A. heated B. disappeared C. softened D. changed gradually
3) He is good at cooking and can do miracles with a few kitchen leftovers.
A. follow the recipes B. team up
C. mix up D. be remarkably successful
4) It is difficult to remove overnight all the problems accumulated over the years.
A. decread B. solved C. gathered D. removed
5) As a spring rain approaches, the humidity level at the ground tends to increa.
A. human B. humorous C. dampness D. huge
Answers: 1) A 2) B 3) D 4) C 5) C
【设计意图：上节课通过词汇释义方式帮助学生掌握几个生词的，由于它们是非课标词汇，是以识别为主，所以此处采用猜词释义方式训练和考查。】
Step 2 Learning new words
Match the underlined words with the proper explanations.
1) Lubrication system can lower工作计划和目标怎么写 power consumption and prolong the life of a machine.
A. making rough B. being polluted
C. being constant D. making smooth or slippery
2) Foods which go through a factory process lo much of their colour, flavour and texture.
A. taste B. thickness C. firmness D. parts
3) I somehow resisted the temptation to tell her what I really thought about her.
A. bore B. battled C. recognized D. witnesd
Answers: 1) D 2) A 3) B
【设计意图：此处是学习新课词汇，对这几个非课标词汇，采用猜词释义方式处理，学生能在语境中猜出它们的意思即可。】
Step 3 Reading
1. Read the lecture transcript and answer the two questions.
T: Alison is reading a physics lecture transcript about friction.
T: Read the lecture transcript and answer the two questions following the transcript.
1) How do you understand that friction is a force that is “hard to resist”?
_________________________________________________________
1) Answer points: a force that is found everywhere and difficult to get rid of, fascinating and important
Full answer:
I think it has two meanings: in the natural world, friction is a force that is found everywhere and difficult to get rid of; on the other hand, friction is so fascinating and important that it attracts scientists to study and learn more about it.
2) What important events in the study of friction are mentioned in the transcript?
_________________________________________________________
2) Answer points:
Scientist | Period | Discovery |
Leonardo da Vinci 最大的羊 | the 1400s | Connections between friction amount and its determining factors |
Guillaume Amontons | 大海的词语17th century | Laws about friction first recorded in print |
Frank Philip Bowden | 学打羽毛球 20th century | The relationship between friction and lubrication |
| 21st century | That friction could have “memory” |
| | |
Full answer:
