Unit 6 When was it invented Section B
Unit 6 When was it invented? Section B 第 5课时 R 九年级上册
1. Tom broke the window. The window was broken by Tom. 2. He broke the windows. The windows were broken by him. be要随着主语变 逻辑主语by来引
Lead-in Inventions are everywhere in our life
3 a Think of something that you do not like to do. Then think of an invention that could help you. Make notes. quickly taking notes in class • Problem: _____________ a special pen • New invention: _________ • What it is used for: _______
3 b Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class. This special pen was invented by Liu Jie. It has three colors and is used for…
Sample writing This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip’s memory, then
assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and the short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.
Color changing cup As you pour in your hot drink, the color changes.
Smart and creative inventions You can never chop your fingers off anymore.
Smart and creative inventions It’s then safe for young children to eat them.
【参考范文】 Computers are becoming more and more important in our daily life. Do you know when the computer was invented ? The computer was invented in 1946. At that time , it was huge. With the development of science and technology, the computer has grown smaller. Now there are many kinds of computers, such as personal computers and laptops. The computer is a very useful tool in our life.
For example , it can send some messages to foreign friends by email. What's more , it can share information with others through the World Wide Web. We can also listen to music or play the game on computers. It makes us relax. It’s hard to imagine what our life would be like without computers. I think computers will be more convenient and they are going to change our life completely in the near future.
Self check 1. Complete the passage with the correct form of the words in the box. invent doubt mention website all of a sudden It is often difficult to decide on the inventor of certain inventions. invent This is because sometimes a few people may _______ things which are nearly the same. It’s hard to tell who came up with the idea first. Some inventions can also lead to other inventions
doubt all of a sudden _______. So some people _____ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her mention websites invention. That is why books or ____ usually _____ more than one inventor when giving information about inventions.
2. Rewrite these sentences using the passive voice. 1. Someone stole my watch. 2. They used five eggs to make this big cake. 3. When did they invent the personal computer? 4. They asked us not to run in the hallway. 5. Someone took the video back to the store.
Check answers 1. Someone stole my watch. My watch was stolen (by someone). 2. They used five eggs to make this big cake. Five eggs were used to make this big cake. 3. When did they invent the personal computer? When was the personal computer invented? 4. They asked us not to run in the hallway. We were asked not to run in the hallway. 5. Someone took the video back to the store. The video was taken back to the store (by someone).
3. Find out information about an invention you would like to know more about and write sentences below. Invention: When: Who: Purpose:
scooter carriage (滑板婴儿车) 2007年, Valentin Vodev (奥地 利)
Exercise Ⅰ. Fill in the blanks with the correct form of the given verbs. was made 1. The first paper _____ (make) in China in 105 AD. was limited 2. For over 500 years the art of making paper _____ (limit) to China. was introduced 3. In 610, papermaking _______ (introduce) into Japan. were known 4. Kites ______ (know) in China about 3, 000 years ago.
were invented 5. Wheelbarrows ______ (invent) in the Han Dynasty. was discovered 6. Gunpowder ________ (discover) by the Chinese hundreds of years ago. was developed 7. Soccer _______ (develop) in England in the 12 th century.
2. 按要求改写下列各句。 1. We planted these trees in 1997. (改成被动语态) These trees were planted (by us) in 1997. __________________ 2. He made a cake yesterday. (改成被动语态) A cake was made by him yesterday. __________________
3. The teacher gave the students some advice. (改成被动语态) Some advice was given to the students by the teacher. ___________________________ 4. He was seen to read a book in his room. (用I作主语, 改为主动 语态) I saw him read a book in his room. ____________________________ 5. She was helped by all the people. (改成一般疑问句) Was she helped by all the people? ____________________________
Ⅲ. 完成句子。 1. 在 200多个国家中,超过一亿人打(篮球),包括中国。 is more It played than _______ by _______ 100 million people in over 200 countries including China. 2. 篮球是由加拿大一位叫詹姆斯·奈史密斯的博士发明的。 was invented by Basketball __________ a Canadian doctor named James Naismith.
3. 人们认为,历史上的首次篮球赛是在 1891年 12月21日 举行的。 It is believed _______ that on December 21 st, 1891, the first basketball game in history was played. 4. 从那时起,篮球在世界各地的普及程度得到提升。 risen has Since then, the popularity of basketball _______ worldwide.
Ⅳ. 用所给词的适当形式填空。 daily 1. Now computers are widely used in our ______ (day) lives. hearing 2. He mentioned _____ (hear) from her often. salty 3. The soup is very _______ (salt) because my mother put lots of salt _____ (salt) on it. popularity 4. Since then, the ______ ( popular ) of basketball has risen quickly. nearly 5. I have worked here for _______(near) two years.
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