2. Unit 4 Amazing Science Topic 2 When was it invented? 哈尔滨市阿城区杨树民主学校 魏培培 福建省晋江市罗山中学 王淑春

3. 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

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

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

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

7. Read 1a and fill out the table.1a InventionInventorYear Light bulb Guglielmo Marconi 1903 Radio Airplane Thomas Edison Wilbur and Orville Wright 1879 1895

8. 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

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

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

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

12. the cloned mice the cloned cows the cloned pigs the cloned animals

13. 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? （录音）

14. 3b Group work Read 3a again and discuss the following questions.3a 1. Who is Dolly and what is used in cloning? 2. What are the advantages and disadvantages of cloning?

15. ( )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. Read 3a and mark the statements True (T) or False (F). T T F F

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

17. 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

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

19. 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 ____ 7.the same as…____ 3. 与 …… 不同 ____ 8.be similar to…____ 4. 迄今为止 ____ 9.during one’s life___ 5. 从 …… 中克隆的 _____ 10.be made into______

20. 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 ____________. 4.________, more and more teenagers in America have showed great interest in learning Chinese. 5.Group Three’s opinions __________ ours. are similar to the same as taking photos is different from So far

21. 三、用所给词的适当形式填空。 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 1998. (direct) 4.Edison, an American _________, created many things. (invent) 5.So far, they have _______ many animals. (clone) 6.Shenzhou Ⅵ _______________ (launch) in 2005. daily today’s inventor cloned directed was launched

22. 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 ommunicate reated xperiment imilar idely

23. Homework: Make a survey about what your classmates want to clone and report to your class. NameWhat to clone Reason

24. （歌曲） Bye!