1. Unit 4 Amazing Science
Topic 2
When was it invented?
Section B

2. Great inventions make our life colorful!
Please choose one to talk about.
English Learning Machine/
Around 2005/
Beijing Ren’ai Education Institute
/learn English
digital camera/1975
/America/
take photos

3. MP3 player/1998
/Korea/listen to music
mobile phone/1973/
America/communicate easily

4. Science make our world wonderful!
Michael, Jane and their classmates are visiting
the Science Museum.

5. Listen and answer the questions.
Look, a light bulb!
When was it invented?
Who was the inventor?
In 1987, by
Thomas Edison

6. Read 1a and fill out the table.
Invention
Inventor
Year
Light bulb
Guglielmo
Marconi
1903
Thomas
Edison
1879
Radio
1895
Wilbur and
Orville Wright
Airplane

7. 重点词（组）和句型
1.in our daily life in our everyday life
2.invent v inventor n invention n.
The inventors invented many great inventions.
3.It’s said/reported that-clause.
4.during one’s life in one’s life

8. Look and talk about the picture.
A: Where were computers invented?
B: They were invented in America.
A: When were computers invented.
B: They were invented in 1946.
invent /America/in 1946

9. Pair work. Make up dialogs after the example.
ShenzhouⅦ
lauch /in China/in 2008
laptop
Pirates of the Caribbean
direct/by Gore Verbinski/in 2006
invent/in Japan/
in 1985

10. Know something about science.
Cloning----- a famous experiment
the cloned sheep---
was created in Scotland a few years ago.

11. the cloned animals
the cloned cows
the cloned pigs
the cloned mice

12. Listen and answer the questions.
1.What’s the name of the cloned sheep?
Dolly.
2.What animals have the scientists cloned now?
Sheep, rabbits, cows, mice, pigs and some other animals.
3.What is used in cloning?
DNA.
4.Is your DNA similar to your parents’?
Yes, it is.
5.What does the writer want to clone?
What do you want to clone ?Why? 。

13. 3b Group work Read 3a again and discuss the following questions.
1. Who is Dolly and what is
used in cloning?
2. What are the advantages
and disadvantages
of cloning?

14. Read 3a and mark the statements True (T) or False (F).
( )1.The cloned sheep, Dolly,was cloned in Canada.
( )2.Scientists have cloned pigs.
( )3.Every part of our body has different DNA.
( )4.There is DNA in all living things. F T F T

15. 疑难解答 1. Do you know about Dolly, the cloned sheep?
I am going to buy a car made in China.
2. DNA 脱氧核糖核酸
DNA fingerprinting
DNA指纹鉴定
3. human being n.
意为“人”，当“人类”讲时，通常用复数human beings humans man.
4. be similar to 与……相似
the same…as ，as…as 与……一样

16. Dolly --- created in Scotland other cloned animals DNA the same as
Retell the passage :Would you like to say
something about the famous experiment?
Cloning
Dolly --- created in Scotland
other cloned animals
DNA
the same as
be similar to
exactly the same

17. Listen to the tape, choose the correct answers and fill in the blanks.
Inventor Year
A. Karl Benz a.1925
B. John Baird b.1876
C. Alexander Graham Bell c.1885

18. 当堂检测 一、词组互译 1.科技博物馆____ 6.It is said that… ____
2.在日常生活中____ the same as…____
3.与……不同 ____ be similar to…____
4.迄今为止 ____ during one’s life___
5.从……中克隆的 _____ be made into______

19. 二、选择合适短语填空，并注意其适当形式。
be different from, take photos,
be similar to, so far, the same…as
1.The weather in the USA_____________ that in Australia.
2.The student has made _______ mistakes ____ he did
last time.
3.Digital camera is used for ____________.
________, more and more teenagers in America have showed great interest in learning Chinese.
5.Group Three’s opinions __________ ours.
is different from
the same as
taking photos
So far
are similar to

20. 三、用所给词的适当形式填空。 daily today’s directed inventor cloned was launched
1.It was used in our _______ study.( day )
2.The airplane is different from _______ .(today )
3.I think the film was _______ by Zhang
Yimou in (direct)
4.Edison, an American _________, created many
things (invent)
5.So far, they have _______ many animals. (clone)
6.Shenzhou Ⅵ _______________ (launch) in 2005.
today’s
directed
inventor
cloned
was launched

21. 四、根据句意及首字母提示写出单词。 1.Guglielmo Marconi is the i ______ of the radio.
2.This kind of machine is w______ used for harvesting in
the countryside.
3.Nowadays more and more people use mobile phones to
c___________ with each other.
4.Shakespeare c______ many famous characters, such as
Hamlet, Romeo, Juliet and so on.
5.The government is trying out a new e_________ in city
planning.
6.Your views on education are s______ to mine.
nventor
idely
ommunicate
reated
xperiment
imilar

22. Homework: Make a survey about what your classmates want
to clone and report to your class.
Name
What to clone
Reason

23. Bye!