【精品】高中英语(人教大纲)第三册：Unit9 Health care(第四课时)

The Fourth Period
Teaching Aims:
1.Learn and master the following words:
incident,significance,bench,sink,jar,lid,devotion
2.Train the students’ integrating skills,especially reading and writing skills.
3.Learn about Alexander Fleming and his great co ntribution to the human’s health.
Teaching Important Points:
1.Understand the passage exactly and learn about Alexander Fleming and his discovery—penicillin.
2.Train the students’ reading and writing ability.
Teaching Difficult Point:
How to help the students write a good article for a journal.
Teaching Methods:
1.Free talk to present some information about the passage to the students,so as to make the students interested in it.
2.Instructing method to help the students write an article.
3.Individul,pair or group work to make every student finish the given tasks better.
Teaching Aids:
1.the multimedia
2.the blackboard
Teaching Procedures:
Step Ⅰ Greetings
Greet the whole class as usual.
Step Ⅱ Revision
T:In the last period,we revised the Subjunctive Mood.Can you use it freely? Ss:Yes.
T:Well,let’s do an exercise.Look at the screen and finish the exercise in three minutes.Then I’ll check your answers.
(Teacher shows the screen and the students begin their work quickly.) Correct mistakes if any.
1.If you worked harder,you would have succeeded.
2.The rice would not have burnt if you had been more careful.
3.It was suggested that the medicines were sent here by plane.
4.If the sun will not rise tomorrow,what would you do?
5.If you hadn’t taken such a long time to get dressed,we’d have got there by now.
6.How I wish I had been able to say the rules without a mistake! Suggested answers:
1.worked—had worked
2.have burnt—have been burnt
3.were—be
4.will—did
5.have got—get
6.√
Step Ⅲ Presentation
T:In this unit,we’ve talked a lot about health care and society.It is known to us that the government has made great efforts to improve health care.However,there are some persons who have also made great contributions to health care.Do you know what kinds of person they are?
Ss:It must be doctors,nurses,chemists and medicine scientists.
T:You are right.For example,in 1928,a young Scottish scientist discovered a chemical that was very effective in curing infections.Do you know who he was?
Ss:Alexander Fleming.
T:What did he call the chemical?
Ss:Penicillin.
T:Yes.It was Fleming’s great discovery that changed hospitals and health care for ever.Thanks to his discovery,many lives have been saved.Today,we are going to read a passage about Alexander Fleming and his discovery penicillin.First,let’s learn the new words in it.
(Teacher shows the following on the screen and deals with the new words as usual.)
Step Ⅳ Reading
T:OK.Now,please open your books at Page 79.Read the passage The Little Mould
That Could silently and quickly.Then finish the first exercise after it.Five
minutes later,I’ll check your answers.
Suggested answers:
Ex.1 1.C 2.B 3.D 4.B 5.B 6.C
T:Well,you’ve understood it very well.In order to get a more exact meaning
of the text,let’s learn some sentences in it.OK?
Ss:OK.
(Teacher shows the sentences on the screen.)
1.Treatment were neither scientific nor effective,and many patients
suffered deadly infection as a result of operation.
2.This medical was able to fight mild infections,but it was not strong
enough to cure serious infections.
3.Despite their lack of interest,Fleming kept trying to develop the
chemical sp that it would be safe and effective.
4.It was not until World War Ⅱ that the importance of Fleming’s disco very
was fully recognized.
5.When asked about his discovery,Sir Alexander Fleming said,“One
sometimes finds what one is not looking for.”
T:Now look at the sentences on the screen.I’ll ask some students to translate
them into Chinese.One student,one sentence.The others listen carefully and
tell if their translations are right.Li Ming,the first sentence.
:治疗既不科学，也没什么效果，许多病人手术后严重感染。

S
1
T：……
:这种药物能治疗轻微的感染，但对于严重感染，其药效还不够强而不能治愈。

S
2
S
:尽管其他科学家对弗莱明的发现不感兴趣，但他还是继续努力研制这种药物以使3
其安全而有效。

S
:直到二战，弗莱明发现的药物的重要性才被完全接受。

4
S
:当有人问及亚历山大·弗莱明自己的发明时，他说：“一个人有时会发现他自己5
并未寻找的东西。

”
(Bb:neither...nor,as a result of,enough to...,lack of,keep doing,so that,It
was not until...that...,when done...)
T:You all did good jobs.Now let’s go on to do Ex.2.Work in pairs and choose
which of the characteristics below do you think helped Alexander Fleming
discover penicillin.At the same time,explain your choices.If necessary,read
the text carefully again.You can begin now.
(Several minutes later,teacher checks their work.)
T:Are you ready now?
Ss:Yes.
T:Well,who’d like to be the first to talk about your choice?
:I will.In my opinion,it was a doctor’s sense of responsibility that helped S
6
Alexander Fleming discover penicillin.With this characteristic,he devoted
himself to his duty and observed carefully.
:I think it was the characteristics of sympathy that helped Alexander S
7
Fleming discover penicillin.Without sympathy,he would not make efforts to
search for the chemical which he believed could treat infections.
:...
S
8
T:Well,all your choices sound reasonable.After class,go on to ask about
others’ choices.Now,let’s listen to the tape of the passage and further
understand it.Ready?
Ss:Ready.
(Teacher plays the tape.After listening,teacher begins to deal with the next
part.)
Step Ⅴ Writing
T:Now imagine that you are Alexander Fleming.You have just discovered penicillin and you are very excited about the new chemical.Do you want to tell other doctors about your discovery?
Ss:Of course I do.
T:What do you want to tell them?Wang Hong.
:First tell them what I have discovered and then what it can be used to S
9
do.
T:By what means can you tell them?Li Xia.
0:By writing an article in a famous medical journal.
S
1
T:What do you think of her idea?
Ss:Very good.
T:OK.Now,please write your article in the form of a letter.You may use the information given on the screen.
(Teacher shows the following on the screen.The students begin to write their articles.If time permits,teacher may ask some students to read their articles to the class.)
Penicillin
·is a natural mould that is easy to grow and use
·will make hospital safer
·can cure infections
·kill bacteria
·can be used to treat diseases
A sample article:
Every doctor,
I’m very glad to t ell you that I have discovered a new chemical,a mould growing on the culture of some harmful kind of bacteria.It is a natural mould that is easy to grow and use.More importantly,the mould seems to be able to
kill the bacteria.I examined it carefully and found out it belonged to a strain of penicillin which could kill off bacteria while not causing any damage to wounds.It worked against many kinds of ter,a series of experiments proved my finds,and therefore,I called it penicillin,which could cure infections by killing bacteria and was mostly safe for the human body.As a result,the existence of penicillin would make hospitals much more safer.I wish the discovery of the mould could be useful to treat diseases that had been considered incurable.If really so,I would feel very delighted. Alexander Fleming
Step Ⅵ Summary and Homework
T:Now,let’s see what we’ve learnt in this period.First,we’ve read the passage about Alexander Fleming and his discovery penicillin.It’s his discovery that changed hospitals and health care for ever.His discovery is a story of hard work and a happy accident.We can learn much from him,such as his characteristics of devotion to duty,carefulness,observation and sense of responsibility.Do you think so?
Ss:Yes.
T:Second,we’ve p ractised writing an article for a journal to make our discovery known to others.Our ability to use language has also been greatly developed.After class,please read the passages in this unit again and again,finding out which words and expressions can help you describe health care.Do you remember?
Ss:Yes.
T:That’s all for today.Goodbye.
Ss:Goodbye.
Suggested answers:
insurance,allowance,clinic,fundamental,chemist,medical
treatment,hospital fees,etc.
Step Ⅶ The Design of the Writing on the
Blackboard
Unit 9 Health care
The Fourth Period
neither...nor... as a result of
enough to do... lack of
keep doing so that
It was not until...that...
When done...,....
Step Ⅷ Record after Teaching
________________________________________________________________________ ________________________________________________________________________ _____________。