unit 4 Great Inventions (reading)ppt課件

UNIT 4 Great inventions,1,invention,Lead-in,discovery,Can you tell the difference between them?,2,Lead-in,Match the relevant(相關(guān)的)people and things.,Thomas Edison,Bisheng(畢昇),Karl Benz,3,What are these?,Inventions,4,Pre-reading,Look at the tittle and the picture of this passage, then answer the following questions. 1. What three inventions will this passage talking about? 2. Which inventions do you think is the greatest invention? Why?,5,While-reading,Close your books, and listen to the passage. Then match the time with the events.,Task 1,6,The wheel The wheel is perhaps the greatest invention in history. After its invention, travelling became faster and more comfortable. A few thousand years ago, people started to use wheels on carriages. In the early 19th century, the first trains began to carry passengers. At the start of the 20th century, cars became popular. Without the wheel, we would not have these inventions.,Great inventions,Great inventions change the world. They help people live a better life. The following are three of the most important inventions in history.,7,The telephone Alexander Graham Bell invented one of the first practical telephones in 1876. Since then, people have been able to speak to each other over long distances. Today millions of people across the world own mobile phones. They allow people to keep in touch with each other anytime, anywhere.,8,The light bulb Thomas Edison developed the first practical light bulb in 1879. Before the invention of the light bulb, people had to use oil lamps, gas lamps or candles to see at night. With light bulbs, people can do as many things in the evenings as they can in the daytime. Can you imagine living without them?,9,While-reading,In 1867, In 1879, In the early 19th century, At the start of the 20th century,cars became popular. Alexander Graham Bell invented one of the first practical. the first train began to carry passengers. Thomas Edison developed the first practical light bulb.,a,b,c,d,10,While-reading,Task 2,Complete the table below.,Dont know.,Alexander Graham Bell,Thomas Edison,A few thousand years ago.,1876,1879,Travelling was very difficult.,People could not speak to each other over long distances.,People had to use oil lamps, gas lamp or candles to see at night.,Travelling became faster and more comfortable Carriages Trains Cars,People can speak to each other over long distances. People can keep in touch with each other anytime, anywhere with mobile phones.,People can do as many things in the evenings as they can see in the daytime.,11,Read the text carefully for the third time then discuss the following questions in group of 4.,While-reading,Task 3,1 How do great inventions help people? 2 Which invention is probably the greatest in history according to the article? 3 What did Alexander Graham Bell invent? 4 When was the first practical light bulb invented? 5 Which of the three things was invented first? 6 What inventions did the wheel make possible? 7 How do mobile phones help people keep in touch with each other? 8 How did people see at night before the invention of the light bulb?,12,Which invention is probably the greatest in history according to the article?,4 When was the first practical light bulb invented?,3 What did Alexander Graham Bell invent?,1 How do great inventions help people?,The wheel.,He invented one of the first practical telephones.,In 1879.,They help people live a better life.,13,How did people see at night before the invention of the light bulb?,Which of the three things was invented first?,The wheel was invented first.,They allow people to keep in touch with each other anytime, anywhere.,They had to use oil lamps, gas lamps or candles to see at night.,What inventions did the wheel make possible?,How do mobile phones help people keep in touch with each other?,It made the inventions of carriages, trains and cars possible.,14,Fill in the blanks according to the passage.,I think the wheel is the (1)_ invention. It makes the travel become (2)_ and (3)_. People started to use wheels on (4)_ since a few thousand years ago. In the early 19th century, people began to take the (5)_ to travel. What is more, car has become one of the most popular things at the (6)_ of 20th century.,greatest,faster,start,more comfortable,carriages,train,15,Fill in the blanks according to the passage.,The first (1)_telephone was (2)_by Alexander Graham Bell in (3)_. People (4)_ speak to each other over long (5)_. Nowadays, many people own (6)_. If you want to talk to other people at (7)_, (8)_, telephone is your best friend.,practical,invented,1876,can,distances,mobile phones,anytime,anywhere,16,Fill in the blanks according to the passage.,(1)_is the inventor of the light bulb. The light bulb has taken place of (2)_, gas lamps or (3)_. With the light bulb, people can do a lot of things they want in the (4)_.,Thomas Edison,oil lamps,candles,evenings,17,Post-reading,Look at some interesting inventions. Have a discussion in group. (talk about the functions and the influence on our life),18,Post-reading,Look at some interesting inventions. Have a discussion in group. (talk about the functions and the influence on our life),19,A: What can people do with it? B: People use it to _. A: What was life like before the invention of it? B: _. What was life like after the invention of it? A: _. B: Do you like it? A: _.,20,homework,Write a short paragraph to describe one of the strange inventions.,21,