Unit 4Topic1 Section D 课件2024-2025学年仁爱科普版英语九年级上册

Unit 4 Amazing Science Topic 1 When was it invented ? SECTION D 1 Teaching aims 1.Knowledge aims： （1）Learn and master some new words and phrases: Words and phrases: mark, explorer, system, man-made, find out, as long as, be used to do sth. Sentences: This method worked well at night as long as the weather was good and the stars could be seen. Today, the problem has been solved by the Global Positioning System. It can also be used to study the shape of the earth. 2. Skill aims: Let students use the passive voice in listening, speaking and writing. 3. Key points: Grammar: the past passive voice 4. Difficult points： The GPS is a great invention that helps us explore our planet and discover where we are. We can use it at any time, in any place and in any weather to find out our position. 2 New words explorer /ɪkˈsplɔ:rə/ n. 探险者，勘探者 mark /ma:k/ n.记号；符号 v. 做记号 3 system /ˈsɪstəm/ n. 体系，制度 man-made adj. 人造的；非天然的 4 Read through Sections A-C and pay attention to the underlined parts. Grammar Passive Voice (II) The radio was invented by Guglielmo Marconi in 1895. When was the digital camera developed? It was developed in the 1970s. Where was it developed? It was developed in Japan. What is a rocket used for? It is used for sending satellites or spaceships into space. 5 语法知识：一般过去时的被动语态 （1）一般过去时的被动语态的基本结构： be 动词过去式was/were + 及物动词的过去分词。 eg. —Where was your coat made? —It was made in Shanghai. （2）一般过去时的被动语态的各种句型 ①陈述句：主语 + was/were + 及物动词的过去分词 eg. My smartphone was made in China. ②一般疑问句：was/were + 主语 + 及物动词的过去分词 eg. Was your smartphone made in China? ③否定句：主语 + was/were+not + 及物动词的过去分词 eg. My smartphone wasn’t made in China. ④特殊疑问句：特殊疑问词 + was/were +主语 + 及物动词的过去分词 eg. Where was your smartphone made? 6 1.Jane gave me a dictionary just now. （改为被动语态） A dictionary ______ _______ ______ me just now. 2.Edison invented more than two thousand inventions during his life. （改为被动语态） More than two thousand inventions _____ _______ by Edison during his life. 3. On January 30th last year, a popular Chinese teenage star Wang Yuan _____ to make a speech at a UN meeting. A. was invited B. invited C. is invited D. will be invited was given to was invented A 7 Passive voice was /were +done ( ) 1. A big supermarket _____in our city last year. A. is built B. were built C. was built ( ) 2.Could you tell me who the radio ____ by? A. invents B. invented C. was invented ( ) 3. Many trees and flowers _____ in our school last year. They made our school more beautiful. A. have planted B. were planted C. planted ( ) 4.The children ____ swim last month and they can swim very well now. A. are taught B. were taught C. were taught to ( ) 5. It is said that potato chips _____by mistake about one hundred years ago. A. were invented B. invented C. are invented C B C A C 8 1.You are late, all the tickets __________(sell) out an hour ago. 2.This type of cellphone ____________(make )in Shenzhen. 3. I _________________ ( not invite) to yesterday’s party. 4. ________ those machines __________(check) this morning? 5. Many trees and flowers ______________(plant) in our school last year, and they made our school a beautiful garden. were sold were made were/was + v.的过去分词 wasn’t invited Were checked were planted Grammar exercise 9 Functions I wish could go into space some day. I hope your dream will come true. It’s said that he invented more than two thousand things during his life. Inventing is interesting and exciting and everyone can be an inventor. 10 What is GPS? Let’s watch the video. 12 Read the passage and discuss the questions on Page88. 1. How did the early explorers know where they were? 2. What’s the disadvantage of using the stars as guiding marks? 3. What is a GPS? Is it useful to use? 4. What do you think the GPS will be used for in the future? 13 Where Are We? Where are we? That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem. Paragraph 1 Q1. How did the early explorers know where they were? They found out where they were by using stars. explore v. 探索；考察 explorer n. 探险者 direction n. 方向 14 Where Are We? Where are we? That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem. Paragraph 1 Q2. What’s the disadvantage of using the stars as guiding marks? Its disadvantage is that it didn’t work well when the weather was bad and the stars could not be seen. work well 奏效，起作用 15 position n. 位置 Where Are We? Today, the problem has been solved by the Global Positioning System(GPS). It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are. Paragraph 2 Q3. What is a GPS? Is it useful to use? It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful. has been solved 现在完成时的被动语态 at any time 在任何时候 Q4. What do you think the GPS will be used for in the future? ... 16 Where Are We? Where are we? That was a big question when we first explored our world long ago.The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem. Where Are We? Where are we? 设问导入，吸引读者 explore our world 探索我们的世界 long ago 很久以前 宾语从句 good guiding marks 良好的指路 记号 find out 查明 work well 奏效，起作用 as long as 只要 +从句 the rest of 剩下的 in the past 宾语从句 17 Today the problem has been solved by the Global Positioning System (GPS).It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are. Global Positioning 全球定位系统 a man-made star 人造卫星 at any time 任何时间 in any place 任何时间 in any weather 任何天气 used to the shape of …的形状 invention 定语从句 help explore discover help sb do sth 帮助某人做某事 被用来做… System be 18 1. Using the stars, they could find out where they were and in which direction they were going. 利用星星，人们就能发现他们在哪里，他们正在朝哪个方向走。 考点： 辨析：look for, find 与 find out 这三个词都有“找”的含义，但具体用法有区别： (1) look for 意为“寻找”，是有目的地找，强调“寻找”这一动作。 eg. —What are you looking for? —I’m looking for my dictionary. (2) find 意为“找到”，强调“找”的结果, 其宾语往往是某个丢失的东西或人。 eg. I haven’t found my lost dog yet. (3) find out 着重表示通过理解、分享、思考、询问等“弄清楚” “查明白”一件事情，其后的宾语常常是某个情况、事实。 eg. We must find out who broke the windows of the teachers’ office yesterday. 19 及时练习1: 1.—We are going to Beijing. Can you help me_____when the train will leave? —Sure. A．look for B．find for C．find out D．to see 2. —Why can’t I learn Geography well? —I don’t know. You have to ______ the reason carefully. A．think about B．find out C．look at D．go for 3. Lily _____ her toy everywhere but she can’t _____ it. A. found; find B. look for; find out C. looked for; find D. finds; find C B C 20 2. This method worked well at night as long as the weather was good and the stars could be seen. But it didn’t work so well during the rest of the time. 在夜晚，只要天气晴朗，你能看见星星，这种方法就能很好地发挥作用。 但是在其余时间里，这种方法就失效了。 考点： (1) as long as意为“只要”。引导条件状语从句，遵循主将从现原则。 eg. We will go for a picnic as long as the weather is fine. (2) the rest 意为“剩余的”，其后接 of + 名词（名词可以是可数名词， 也可以是不可数名词），其谓语动词的形式由句子中作主语的名词决定。 eg. The rest of books are for disabled children. 练习 ： 1. The rest of milk _______ (be) for the little dog. 2. My parents don’t mind which school I choose _____ I am happy every day. A . as long as B. before long C. what’s more D. as soon as is A 21 Language Points 1. explore（及物动词），“探索；探险” explorer（可数名词），“探险者” 2. guiding marks “地标” 3. in ... direction “朝着......方向” in one’s direction in the direction of ... in all directions 4. work（well）in (doing) sth. “（很好地）发挥作用” work out计算出 work for 为...工作 work on 从事 5. as long as “只要” eg. You will make great progress as long as you study hard. 6. the rest意为“剩余的部分”，后接of+名词。如果跟的是可数名词复数形式，谓语动词用复数；如果跟的是不可数名词，谓语动词就用单数。 e.g. 1. The rest of the apples are for you. 剩下的苹果都是给你的。 22 2. The rest of the milk has gone bad. 7. man-made（复合形容词），“人造的” e.g. man-made satellite人造卫星 8. be used to do sth. “被用来做某事” use sth. for doing sth. / use sth. to do sth. “用某物来做某事” e.g. We use knife for cutting the bread. / We use the knife to cut the bread. 23 1. People use radios to learn English in the past. _____________________________________________ 2. Jack will show me the photo. ______________________________________________ 3. They have raised much money for the Project Hope. ______________________________________________ 4. I often hear Mary sing English songs at home. _______________________________________________ 5. We mustn’t throw litter about. ________________________________________________ Radios were used to learn English in the past. The photo will be shown to me. Much money has been raised for the Project Hope. Mary is often heard to sing English songs at home. Litter mustn’t be thrown about. Change the following sentences into Passive Voice. Exercises ( ) 1.Hurry up, you ____ on the phone. A. wanted B. was wanted C. are wanted ( ) 2. Some stories _____the children by the teacher everyday. A. is told for B. are told for C. are told to ( ) 3._____that he has studied abroad for five years. A. It is said B. It says C. That is said ( ) 4.The window ____ five minutes ago. A. is cleaned B. was cleaned C. can be cleaned ( ) 5.The children ______by the teachers at school. A. take care of B. are taken care C. are taken care of C C A B C Choose the best answer. Exercises ( ) 6. I have no idea what ______while I was asleep. A. happened B. was happened C. happens ( ) 7. In some countries, tea _____before meals. A. is serving B. is served C. served ( ) 8. This kind of books ______well. A. doesn’t sell B. isn’t selling C. aren’t sold. ( ) 9. I ______ten minutes to decide which sentence was right by the teacher. A. gave B. was given C. was giving ( ) 10. Teachers ______in every part of the world. A. are needing B. are needed C. will need A B A B B Exercises We Learn: 1. Some words : mark, explorer 2. Some phrases: find out, in …, direction, as long as, work well, the rest of the time, be used to, the shape of 3. Some sentences: This method worked well at night as long as the weather was good and the stars could be seen. We can: 1.Use the passive voice of the simple past tense more properly. 2.Talk about new technology GPS. 3. Develope our imagination and creativity by designing our own inventions. Summary 27 Lavf58.20.100 Lavf58.20.100 Packed by Bilibili XCoder v2.0.2 66192.93 $$