Unit 4 Topic 3 Section C课件2023-2024学年仁爱科普版九年级英语上册

Unit 4 Amazing Science Topic 3 Section C 学习目标 预习检测 知识梳理 课堂总结 学习 导航 重点探究 当堂检测 新课导入 Can you give some examples of the use of the computer in some fields? 1.I’m sorry to keep you______so long.  A.wait　　　　　 B.to wait　　　　　 C.waited 　　　　　D.waiting 2.As a student, we are supposed to______the Internet bar.  A.run away from B.come up to C.keep away from D.keep up with 3.Computers are used to______games for some children. A.play B.playing C.plays D.played D C A 预习检测 4.Since computers_____in the USA, they have become very important. A.invented B.are invented C.were invented D.invent 5.______the help of my teacher, I became an excellent student. A.At B.To C.On D.With C D 能熟悉并正确运用本课时的重点单词和短语 1 2 能掌握定语从句的结构和用法 3 能谈论电脑的重要性 学习目标 学习目标 学习目标 学习目标 知识梳理 Key phrases there is no doubt 毫无疑问 do business 做生意 chat online 在线聊天 for instance 例如 at work and at home 在工作中和家庭生活中 break down 出故障 instead of 代替 come into being 形成，产生 thanks to 多亏，由于 1. There is no doubt that computers are very useful in technology and business. 毫无疑问电脑在技术和贸易业都非常有用。 doubt n. & v. 怀疑，疑惑 (1)doubt (vt.)+ 从句 I doubt whether/if he'll change his mind. I don't doubt that they will be able to solve the problems. (2)doubt (vi.)+ about / of There is no reason to doubt of his honesty. Key points 2. Instead of writing letters on paper, people communicate by sending e-mails and chatting online.人们通过发送电子邮件和在线聊天的 方式进行交流，代替了用纸写信。 instead单独使用，可放于句尾，如果放于句中应该用逗号隔开。 而instead of通常放于句中，后面要加名词，代词，或者动名词。 I didn't go to Beijing, instead, he went there. =I didn't go to Beijing, he went there, instead. He went to Beijing instead of me. instead of doing 代替，而不是…… He stayed at home yesterday