Unit5 Topic2 SectionD课件 -2024-2025学年仁爱科普版九年级英语下册

仁爱科普版九年级英语下册 5.2 Section D The science today is the technology of tomorrow. Unit 5 China and the World Topic 2 He is really a pride of China. Section D What do you know about the Four Great Inventions of ancient China? Brige-in 短语速记 1.依靠；依据　depend on　  2.在……的帮助下　with one’s help＝with the help of　  3.据说　it is said that 　  4.最……之一 　one of the＋最高级＋复数　  depend on with one’s help＝with the help of it is said that one of the＋最高级＋复数 8.扩散到……　spread to...　  spread to... 5.被用来做　be used for doing/to do　  6.在……末尾　at the end of ...　  7.被引进　be brought to　  be used for doing/to do at the end of ... be brought to 句子速译 1.指南针被发明之后，海洋就开放航行了。 After it was invented， the oceans were open to sail.  2.起初，火药是用来做烟花的。 At first， it was used for making fireworks.  After it was invented， the oceans were open to sail.  At first， it was used for making fireworks.  3.During the Western Han dynasty， it was made in some places in China， and was developed in the Eastern Han dynasty by Cai Lun. 西汉时期，中国的一些地方制造纸张；东汉时期，造纸由蔡伦发展起来。 西汉时期，中国的一些地方制造纸张；东汉时期，造纸由蔡伦发展起来。 一、想一想 预习课本1a，回答下列问题。 1.Who had to depend on the star to find the right direction before the compass was invented？ Sailors. 2.What was the gunpowder used for at first？ Gunpowder was used for making fireworks at first.  Sailors. Gunpowder was used for making fireworks at first.  注意1： that/which在代物时常常可以通用, 但有时只宜于用which ,不用that 关系代词前有介词时.　 This is the hotel in which you will stay. 如有两个定语从句,其中一句的关系代词是that,另一句宜于用which. Let me show you the novel that I borrowed from the liberary which was newly open (新开放) to us. 　　 sailor The sailors often use the compass when they are sailing. sail printing n. Printing is one of China's four inventions. print v. 1.有两个定语从句,其中一个关系代词已用which,另外一个宜用that Edison built up a factory(办了一个工厂) which produced things that had never been seen before. 1. How did the sailors find the right direction before the compass was invented? Sailors had to depend on the star to find the right direction. 2. When was the method of making gunpowder brought to the Arab world and Europe? In the 13th and 14th centuries. Read 1a and answer the following questions. clay At first, Bi Sheng carved characters on pieces of clay or wood. Then, he brushed ink on them. Now he could print the characters. [kleɪ] [ɪŋk] ink 重点探究 Look at the pictures and match the Four Great Inventions of ancient China with them. A. gunpowder B. printing C. paper-making D. compass D C A B Read 1a and answer the following questions. 3. What did Cai Lun use to make paper at that time? He used bark, ropes and rags. 4. What was the advantage of Bi Sheng’s printing technology? The pieces of clay or wood could be used again. Could you tell me more about him? 你能告诉我更多关于他的情况吗？ It’s hard to believe! 真是让人难以相信! What a great explorer! 多么伟大的探险家啊! Functions 通过以 活动小结 通过以上的活动，我们可以知道：who引导的定语从句：若先行词指_____则代替先行词在定语从句中充当______或______，如果前面带介词则必须用______;______在定语从句中做定语，既可以指_____,也可以指______。 人 主语 宾语 whom 人 物 whose 1. Do you want to be an inventor? How will you realize your dream? Share it with your classmates. ___________ It was a great gift to the world from ancient China. Before it was invented, sailors had to depend on the star to find the right direction. After it was invented, the oceans were open to sail. And many discoveries were made with its help. Compass 了解中国古代的四大发明 Could you tell me the name of the four great inventions in English? gunpowder printing paper-making compass Homework 1. Memorize the useful expressions and key sentences which we learn today. 2. Preview Unit 5 Topic 3-Section A. Bye-bye! Lavf58.20.100 Lavf58.20.100 Lavf58.20.100 119331.18 $$