Unit 5 Power of Ideas Section A 3a-3d课件 2026-2027学年人教版英语九年级上册

Unit 5 Power of Ideas Section A 3a-3d Lead-in There are so many great inventions in the world. Now let’s enjoy a video to know about them. What do you think is a great invention? I think ... is a great invention. Read the conversation. What does Peter think is the most useful invention of all time? Fu Xing: What do you think is the most useful invention of all time, Peter? Peter: It has to be the radio. Fu Xing: The radio? Why? Peter: Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Fu Xing: Right. Who was the inventor? Peter: An Italian inventor called Guglielmo Marconi. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Fu Xing: Wow! That was quite a distance at that time. Peter: Yeah. And because of the radio, some other important inventions were developed as well. Fu Xing: Like the television? Peter: That's right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. Peter thinks the radio is the most useful invention of all time. 3a Read again and complete the chart. Invention: _____________ Who was the inventor? _______________________________________________ When was it invented? _______________________________________________ _______________________________________________ _______________________________________________ How did it change the world? _______________________________________________ _______________________________________________ _______________________________________________ _______________________________________________ The radio Guglielmo Marconi The idea was developed in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. ① It made the world much smaller. ② It led to other important inventions like the television. ③ It made it much easier for people to enjoy music from artists around the world. 3b Read the conversation and select the correct answer. 1. Why does Peter think the radio is the most useful invention? A. It helped people travel around the world fast. B. It made information spread much faster. C. It could help people cross the Atlantic. D. It took the place of television. 2. Before the radio was invented, ________. A. news spread very fast B. information moved very slowly C. people could enjoy music easily D. messages could cross the Atlantic quickly 3. When was a radio message first sent across the Atlantic Ocean? A. In the 1890s. B. In 1901. C. In 1910. D. In 1900. 4. Which of the following is TRUE according to the dialogue? A. Marconi was a French inventor. B. The radio had no influence on music. C. The television was one of the inventions developed because of the radio. D. Radio news could travel around the world in hours. Read the conversation and select the correct answer. 1.What does Peter think is the most useful invention of all time? 2.Why does Peter think the radio is useful? 3.Who invented the radio? 4.When was a radio message first sent across the Atlantic Ocean? 5.What effect did the radio have on music? The radio made it much easier for people to enjoy music from artists around the world. It was first sent across the Atlantic Ocean in 1901. An Italian inventor called Guglielmo Marconi. Because before the radio was invented, information travelled very slowly. The radio made the world much smaller and allowed news to spread around the world in seconds. He thinks the radio is the most useful invention of all time. Read the conversation carefully and answer the questions. What do you think is the most useful invention of all time, Peter? It has to be the radio. The radio? Why? Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Right. Who was the inventor? An Italian inventor called Guglielmo Marconil. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Wow! That was quite a distance at that time. Yeah. And because of the radio, some other important inventions were developed as well. Like the television? That’s right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. Read and analyze Fu Xing: Peter: Fu Xing: Peter: 转送，传播 =all over the world 全世界 发明 Fu Xing: Peter: Fu Xing: Peter: Fu Xing: Peter: 在19世纪90年代 因为；由于 have a(n)... effect on 对…产生…影响 make it+形容词+for sb to do sth 使某人做某事是……的 Listen to the conversation. Pay attention to how the key information is stressed. Then role-play the conversation. What do you think is the most useful invention of all time, Peter? It has to be the radio. The radio? Why? Before the radio was invented, information travelled very slowly. The world was made much smaller by the radio. Suddenly, news could be spread around the world in seconds. Fu Xing: Peter: Fu Xing: Peter: Right. Who was the inventor? An Italian inventor called Guglielmo Marconil. He developed the idea in the 1890s. In 1901, a radio message was sent across the Atlantic Ocean for the first time. Wow! That was quite a distance at that time. Yeah. And because of the radio, some other important inventions were developed as well. Like the television? That’s right. It also had a big effect on music. The radio made it much easier for people to enjoy music from artists around the world. Fu Xing: Peter: Fu Xing: Peter: Fu Xing: Peter: 3c Review and fill in the blanks. What do you think is the ___________ invention of __________, Peter? It has to be the radio. The radio? Why? Before the radio ___________, information ________ very slowly. The world __________ much smaller by the radio. Suddenly, news could _________around the world in seconds. Fu Xing: Peter: Fu Xing: Peter: Right. Who was the inventor? An Italian inventor called Guglielmo Marconil. He _________________ in the 1890s. In 1901, a radio message __________ across the Atlantic Ocean ________________. Wow! That was quite a distance at that time. Yeah. And ___________ the radio, some other important inventions ______________ as well. Like the television? That’s right. It also __________________music. The radio ___________________ for people to enjoy music from artists around the world. Fu Xing: Peter: Fu Xing: Peter: Fu Xing: Peter: most useful all time was invented was made be spread developed the idea was sent travelled for the first time because of were developed had a big effect on made it much easier 高频率使用被动语态 （the passive voice） Choose another invention you think is the most important and make a mind map about it. Then describe it to a partner. I think ... is the most useful invention. It was invented by ... It was invented in ... It changed the world because ... Question Answer What Who When How 3d I.单项填空 (  ) 1. The first airplane ______ by the Wright brothers in 1903, which opened the era of human flight. A. invents B. invented C. is invented D. was invented (  ) 2. The math competition was very difficult, but Tom worked it out ______ with his excellent skills. A. in seconds B. on time C. by chance D. in person (  ) 3. — Excuse me, could you tell me the ______ from here to the nearest subway station? — Sure. It’s about 500 meters. You can walk there in 5 minutes. A. price B. weight C. distance D. height (  ) 4. Lack of sleep _____ your ability to concentrate, and this bad habit has a negative ______ on your study. A. affects; affects B. effects; affects C. affects; effects D. effects; effects (  ) 5. — I think the Internet is the most important invention in human history. — ______. It has completely changed the way we live, work, and communicate. A. I don’t agree B. I’m not sure C. That’s right D. Never mind II.选用方框中的短语填空（每个限用一次） was invented was spread was sent had a big effect on developed the idea 1. The radio ____________________ in the 1890s by Guglielmo Marconi.   2. Before the radio, news ____________________ very slowly.   3. In 1901, a radio message ____________________ across the Atlantic Ocean for the first time.   4. The radio ____________________ music because it made it easier to enjoy songs from around the world.   5. Marconi ____________________ of using radio waves for communication.   was invented was spread was sent had a big effect on developed the idea 从方框中选择合适的词填空，每词限用一次） across around because by well 1. News could be spread ______ the world in seconds with the radio. 2. A radio message was sent ______ the Atlantic Ocean for the first time in 1901. 3. Some other important inventions were developed ______ of the radio. 4. The world was made much smaller ______ the radio. 5. The television is also a useful invention, and it influences our lives as ______. around across because by well The software enables you to access the internet in _______ (second). The camera __________ (invent) by the French _______ (invent) Joseph Niépce in 1816. An error was reported when he tried to write data to the file for the _____ (one) time. III、用所给词的适当形式填空。 seconds was invented first inventor 4. The radio message was ______ (send) across the Atlantic Ocean in 1901. 5. Guglielmo Marconi was a great (invent) who developed the radio. 6. Information travelled very ______ (slow) before the radio was invented. 7. The radio has a big ______ (affect) on people's daily lives. 8. He (development) his idea for many years before succeeding. sent inventor slowly effect developed IV. 完成句子，每空一词。 1. 伏明霞是历史上最年轻的跳水世界冠军。 Fu Mingxia is the youngest diving world champion _____ ____ _____. 2. 这项公告对房屋价格产生了巨大的影响。 The announcement ____ ____ _____ ______ on house prices. of had a big effect all time 3. The good news ___ _____ ______ ____ ______（传遍世界）in a few days. 4. Reading ______ ______ ______ ______ ______ ______（对我们有重大影响）. 5. He ___ ______（完善了想法）and finally succeeded. was spread around the world has a great effect on us developed his idea 1.Listen and recite the text in 3a. 2.Review the key language points of this lesson. 3.Search online for information about the history of a useful invention and its effects. Then create a dialogue with your partner. 4.Do some related exercises. Homework Lavf57.83.100 null 67655.93 $