everyone’s-language课件2

9. How long did Shakuntala’s brain take to find the answer?
Shakuntala’s brain took fifty seconds to find the answer.
Fill in the blanks according to the passage
following that are going to be 11. ________: mentioned next
follow (v.)跟随 following • Can you answer the __________ questions? Follow • _________ me please. I’ll show you the way. following (adj.)下列的
Everyone knows the international ________ language of numbers. In ancient times, numbers were written in ________ different ways, but counting was nearly always in _____. tens Everyone uses the number _______ system 1 to 9 plus zero. The system was invented by the Indians. _______ Zero makes it easier to write big numbers and to _________. calculate
invent make for the first time 10. _______: invent (v.)发明 invention (n.)发明 inventor (n.)发明家
• Benjamin Franklin was a famous inventor .He __________ invented the ________ lightning rod（避雷针).It is a great invention ____________.
Revision of the phrases
Say the phrases according to the meanings • • • • • • in ancient times 1. ______________:long,long ago at least 2. ______________: not less than 3. ______________: in a very short time in a flash 4. ______________:not in the same way in different ways 5.__________________:in in one’s whole lifetime all one’s life 6. ______________: solve the problem work out the problem
5. Which was one of the first calculating machines?
One of the first calculating machines was an abacus. 6. Why do people still use abacuses today? Because they are fast and accurate. 7. What can a modern electronic calculator do? It can add, subtract, multiply and divide. It can also calculate percentages and square roots. 8. Why do we say computers are very powerful? Because it can do a calculation that you could not do in your whole lifetime in a flash.
3. The coat is expensive. He can’t buy it. so expensive _____ that he can’t The coat is _____ buy it. The coat is ______ too expensive for him ______ to buy. The coat is not cheap ______ ______ enough for him to buy.
calculate use numbers to find answers 9. ________:
calculate(v.)计算 calculation(n.)计算 calculator(n.)计算器 calculating(adj.)计算的 • A _________ calculator is a __________ calculating machine. It calculate faster and helps people to _________ more accurately because it can do a calculation in a flash. difficult ___________
What is each part mainly about?
P1: different ways of writing ancient numbers P2: the system of numbers P3: three calculating machines P4: a powerful living computer
Revision of the Passage
Answer the queFra Baidu bibliotektions about the text
1. What did people write in many different ways? People wrote numbers in many different ways. 2. In what way did people count? People counted in tens. 3. Who invented the zero? The Indians invented the zero. 4. Why was the zero a very important invention? Because it made it easier to write big numbers and to calculate.
12. _______: not dead living
living (adj.)活着的 live (v.)生活 living Can all ___________ things __________ live for several days without food? 13. ________ amazing : very surprising amazing (adj.)令人惊奇的 amazed (adj.)感到惊奇的 We felt __________ when we read the amazed amazing story. ________
at least in a flash in ancient times in different ways solve the problem in one’s whole lifetime 1. We can use water _______________, in different ways such as washing clothes or cooking food. 2. Li Bai was a great poet who lived _____________. in ancient times 3. It took us one hour to ______________ solve the problem
There are three calculating machines, the abacus, the modern ________ electronic calculator and the computer. Which is more powerful, the computer or the human ________? brain There was a competition between an amazing lady who is from ______ India and a powerful computer. However, the lady won. Her brain ______ took less time to find the answer, like _______. lightning Computers can’t do anything by themselves. Someone had to first ________ program the computer.
at least in a flash in ancient times in different ways solve the problem in one’s whole lifetime
4. Your teacher looks old. He must be at least 50 years old. _________ his whole lifetime 5. My father lived in China in _______________. 6. The computer finished the calculation in a flash ____________.
Chapter 4 Numbers Revision
Rivision of the words
abacus
brain
calculator
lightning
Say and spell the words according to the meanings
1. _______: nearly almost accurate correct and true 2. _______: powerful strong 3. _______: 4. _______: human of or like people, not animals against on the other side in a game, fight, etc. 5. _______: 6. _______: system a group of things that work together 7. develop ______: grow bigger or stronger;become better 8. _______: program give orders to a computer
Revision of the sentence structures
Keep the same meaning of each sentence
1. I spent two days doing this job.
took me two days _____ It ______ to do this job. 2. He is strong. He can carry the heavy suitcase. that he can carry He is _____ so strong ______ the heavy suitcase. He is strong enough ______ ______ carry the to heavy suitcase.