Step 1 Lead in
If one person coughed badly and had a headache, what may have happened to him
He may have caught a cold.
What advice can you give to him/her (Discussion)
Use the sentence pattern:
I advise him to
I suggest that
I recommend him doing
Suggested answer :
1.Have a good rest/sleep
2.Drink a lot of water
3.Go to see the doctor take the medicine/ Get a injection/infusion
4.……
Which one will make the person get well the most quickly?
It seems that the medicine plays an important role in our daily life.
Step2 Fast reading
Today we’ll learn a new passage. Open your books and turn to page 18
Read the title together: two life-saving medicines
Read the subtitle very quickly too and tell me what the two life-saving medicines are
Students’ answer: They are Aspirin and Penicillin
so this passage has two main parts. one is about Aspirin ,another is about Penicillin.
Step 3 careful reading
Part 1 aspirin
There are two paragraphs about aspirin .Read the first paragaph.
Try your best to find what happened
3500years ago: drink a tea made from the leaves of a particular plant
2500years ago: drink the juice from the bark of a kind of tree
In 1897: invented/ produced from some other chemicals.
In 1900: sold in shops as a tablet
In 1950: as the best-selling painkiller recorded in the Guinness Book
According to the time order ,what this paragraph may talk about in your opinion
让学生回答板书: Development of aspirin
Develop from: early findings (contained in the leaves and barks)→powder form→tablet.
They drank the tea and the juice in order to reduce body pains and fever
Ask the students to read the second paragraph and try to find what happened
In 1953: first introduced the idea that Aspirin could reduce the risk of hearts by thinning blood.
In 1971: proved to be a blood-thinning medicine
In 1977: used to prevent a stroke
In 1988(11years later):reduce the risk of colon cancer
In 1999: help increase the length of people’s lives.
In 2003: reduce blood sugar levels./help people with diabetes
it is amazing that aspirin has so many uses.
Do you know other use for aspirin
People like buying carnation and rose on special days, like mother’s day, Valentine’s Day. But we find it really difficult to keep them long. Flowers will wither quickly. It’s said that if you put aspirin into the water. The flower will grow better and their lives will last longer.
Part 2 penicillin
How much do you know about the penicillin
Ask the students to discuss
Suggested answer:
It should be tested on the skin first.
It is still widely used nowadays
It is not so expensive but it works well
It can be used to kill the bacteria
Compared with other antibiotics, it has less side effects
……
We are quite familiar with it. But do you know who discovered it Read the passage and you will find the answer.
板书:In 1928: discovered by Alexander Fleming
(Where did Alexander Fleming find Penicillin
In the mould that killed bacteria.
But he failed to purify it.)
World War II: found new chemical techniques to purify it.
(Due to the war, it was needed immediately and greatly.)
In 1945: all the scientists shared the Nobel Prize
(Who are they and why
Fleming,florey and chain ; the great drug saved millions of lives.)
Effects of penicillin:(What illnesses can it be used to treat )
Help in treating wounds and infections
Treat other illnesses including pneumonia
Step 4 exercises
Ask the students to do the exercises about C2
(帮学生巩固一下所学内容。)
Step 6 discussion
What do you think the world would be like if there were no medicines
(suffer from pain, lose lives….)
Step 6 conclusion
It seems that medicine is very important. The world would be in a mess if there were no medicines. But can we rely on them too much and use them without caution
Of course we can’t. As we all know, medicines have side effects on our heath. If we take too much or for a long time, it will damage our immune system and do great harm to our body.
So on one hand, we need medicines if we were ill, on the other hand, we should not depend on the medicines too much. Good eating habit and regular exercise contribute a lot to a healthy body.
I hope more and more people can live a healthy life. In that case, maybe people can keep healthy without the medicines.
Give you a saying:
An apple a day keeps the doctor away
Thank you!