重庆市涪陵第十九中学九年级英语上册 unit 4 amazing science topic 1 section c导学案无答案 仁爱版.docVIP

Unit 4 Amazing Science Topic 1 Section C导学案 1. There is no doubt that computers are very useful in technology and business . There is no doubt that 毫无疑问... 如： There is no doubt that you made a great mistake. 毫无疑问的你犯了一个大错误。 2. Since the internet came into being , people’s lives at home have changed, too. (1)come into being 形成，出现 如： SARS came into being in 2003 and Bird flu in 2005. 2003 出现了非典，2005出现了禽流感。 3． For instance, if we work on computer too long, we may get headaches or sore eyes. (1) instance n. 例子，实例 如： I haven他found啊single instance that someone said dirty words in our class. 在我们班里，我还没有发现说脏话的例子。 (2) for instance = for example 例如 如： For instance, we can communicate with each other by chatting online. 比如，我们可以通过网上聊天互相交流。 【基础知识过关】 I.短语 1.毫无疑问..._______________________ 2.在某人的帮助下______________ 3.保持某人做某事_____________________ 4.对...有危害_________________ 5.形成___________________ 6.幸亏，由于_______________________ 7.购物，做生意_____________________ 8.网上聊天____________________ 9.被联系起来__________________ 10. 把...连在一起______________________ 11. 交换信息____________________ II. 单项选择 ( )1.English and computer ______ to man fields. use widely B. has widely used C. used widely D.are widely used ( )2.You can draw a picture for me in five minutes , but you kept me ______ for two years. to wait B. for waiting C. waiting D. wait ( )3.More and more young people communicate ____ sending e-mails. in B.by C. with D. to ( )4.There is no doubt ________ he has made great progress in his study. why B. whether C.that D. when ( )5.The life of human beings has changed a lot since the first computer ______ happened B. took place C. came into being D. came about 【综合能力提升】 I.单项选择 ( ) 1More and more people like to communicate on line instead of _____ letters. A.write B.to write C. writing D. wrote ( ) 2.You