九年级英语When_was_it_invented课件2(1).ppt

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1、 Unit 4 When was it invented?Section B Made by Yu Jiangnan 知识目标：知识目标：After learning the text,require the students to master the phrases below:(通过学习，掌握下列词语通过学习，掌握下列词语)invent,popular drink,by accident,notuntil,discover,according to,Chinese legend,boil,an open fire,fall(fell)into,remain(ed),notice(d),p

2、roduce(d),in this way能力目标：能力目标：1.Practice the students listening ability.(听力训练听力训练)2.Ask the students to understand the passage very well and answer some questions according to the passage.(能够正确理解本文含义，回答相关问题。能够正确理解本文含义，回答相关问题。)3.Useful phrases for the students to retell the new text.(利用关键词语，能够复述课文大意

3、。利用关键词语，能够复述课文大意。)情感态势：情感态势：Train the students to use their heads and make some inventions in life.(开动脑筋，培养发明创造能力开动脑筋，培养发明创造能力.)学习策略：学习策略：1.chips history(a foreign invention)tea(Chinese invention)2.work in groups and solve problems togetherCorrect your words,please.1.chef 2.beverage3.ancient 4.legen

4、d5.in this way 6.remain7.by accident 8.notice9.produce 10.by mistake11.mixture 12.according to13.sprinkle 14.fall into15.pleasant The history of potato chips _ that potato chips were invented by mistake?Potato chips _by a chef called George Crum.They were invented in _.George Crum cooked them for a

5、long time until they _.And he sprinkled lots of salt on them so they were _.An interesting story for youDid you knowwere invented1853were crispyreally salty Who invented tea?Who invented tea?Who invented tea?Who invented tea?1.What is this article about?1.What is this article about?2.When was it inv

6、ented?2.When was it invented?3.Who was it invented by?3.Who was it invented by?4.How was it invented?4.How was it invented?Its about how tea was invented.It was invented by accident.It was invented over 3,000 years ago.It was invented by the emperor Shen Nong.Find out the following points:1.although

7、用法简析 _eg.用although/though 或bu t填空 _ he is very old,he still works hard.He is very old,_ he still works hard.2.over在本文中的2种解释_ 同义词：_ 100多年前_ _ 河上的一座桥 _3.three thousand years,thousands of具体使用_拓展：hundred,million虽然但是；可用though 替换；不与but 同时出现Although超过，多于more thanover/more than 100 years在在（正）上方（正）上方a bridge

8、 over the river加s,与of 连用。but前有确切数字，用原形；数字不确切，词尾前有确切数字，用原形；数字不确切，词尾4.被动语态的使用（找出本文含有被动语态的句子，4个）_5.回顾：主动语态变被动语态规则一二三。Tea was invented by accident.Tea wasnt brought to the western world.This beverage was discovered over 3000 years.One of drinks was invented.一断断：判断时态二析析：分析是否主谓宾三变化变化：宾变主，主变（by的）宾，谓语变为be+过

9、分Retell the article,using the phrases below1.teathe most popularinventedby accident?2.Althoughwasnt broughtuntil beverage was discoveredoverbefore that.3.According to emperor when boiling open fire.4.fell into remained.5.noticed produced smell.6.Later to taste mixture.7.delicious8.in this way Presen

10、t trainingA.翻译下列词组：1.被发现 _ 2.根据_ 3.fall into_4.在室外火炉上_ 5.produce a pleasant smell _B.完成以下各题：1.A_ to weather report,we are going to have a few rainy days.2.Alice took Amys bag _.(错误地)3.(09聊城中考)Li Ming will be 12 next month.A new bike _ for him as a present.A.is bought B.was bought C.will be bought D.

11、will buy be discovered by according toover an open fire落入，掉落发出怡人的气味ccordingby mistakeC4.（09成都中考）人们意外发现格林先生对中国传 统艺术有着很高的鉴赏能力。Mr Green was found _ _ that he had a good taste for Chinese traditional art.5.Edison invented light bulbs.(变为被动句)_by accident Light bulbs were invented by Edison.Homework1.预习Reading 部分生词和课文。2.完成学案Section B练习。