Unit 12 Innovation Section 2 “Scientific Breakthroughs”的课文习读环节课件(共72张PPT+ 学案 +练习）

Section 2　 “Scientific Breakthroughs”的课文习读环节 课时目标 1.略读文章，熟悉话题语境，获取文章的主旨大意。 2.细读文章，找出相关的细节信息并梳理二十世纪重要的发明和发现。 3.运用主题词汇写一篇关于一个重要发现或发明的概要。 文意整体把握 Ⅰ.理清文脉结构 Ⅱ.把握主旨大意 1．What does the passage mainly talk about？(　 ) A．Scientific discoveries in our daily lives. B．Commitment made by great inventors. C．Changes happen in our everyday lives. D．Pioneers of the 20th century in science. 2．Match the main idea with each part. Part 1 (Para.1)　A．The influence of these discoveries or inventions. Part 2 (Paras.2～6) B．There are many important discoveries and inventions in the 20th century. Part 3 (Para.7) C．Some representative pioneers and their discoveries or inventions. 文意深度理解 (一)阅读理解 1．What's the main idea of the first paragraph？(　 ) A．People have made amazing discoveries in medicine, communications and transport. B．It is hard to choose the single most important discovery of the 20th century. C．Scientists have found how to split the atom. D．The world has changed completely. [Tip] 如何归纳段落大意 在归纳段落大意时，首先要找到该段的中心句。如果该段没有中心句，在确定该段每句话的信息和功能后，再归纳和概括。课文第一段的第一句是中心句，表明了在20世纪的重大发现中选出最重要的一项不是一件容易的事。后面的句子属于细节支撑，主要解释各个方面的科技发展情况。由此可判断第一段的段意。 2．How did Einstein think of the equation “E＝mc2”？(　 ) A．When he was at work. B．His assistant helped him. C．When he was rocking his one year old baby, he was inspired. D．His dream inspired him. 3．After Alexander Fleming double checked，he realised that _____.(　 ) A．penicillin was in fact the natural form of the blue mould B．penicillin was useless to help to save the lives of people C．he made the greatest breakthrough of the century D．penicillin could be used to kill bacteria 4．What's the original purpose of designing the first computer？(　 ) A．To do some difficult experiments. B．To improve the accuracy of the missiles. C．To help people make mathematical calculations. D．To replace the missiles and become a new weapon. 5．What is the author's attitude to the pioneers and their achievements？(　 ) A．Objective.　　　　 B．Admirable. C．Indifferent. D．Skeptical. (二)阅读表达 1．What does the WWW enable computers around the world to do 　_____ 2．What role do pioneers in science and technology play 　_____ 　_____ 3．Which discovery or invention do you think has been the most important so far Why 　_____ 　_____ _____ 内化读文技法 标记关键信息速读文 本文是说明文，写作结构为“总－分－总”。第一段整体介绍了20世纪的许多重要的科学成就。第二至六段详细介绍了20世纪取得重大科学突破的一些科学先驱及其成就。第七段总结了这些科学突破带给人们的影响。 其中在介绍20世纪的重要科学成就时采用了时间顺序的说明手法，阅读时按照时间顺序在文中标记关键信息，便于快速定位和解答。 (一)赏用词之妙 1．Medical advances ranged from discovering the causes of diseases under microscope ... ...