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1、九年级教案Unit 9Unit 9 When was it invented ?一、 教学目标1、 语言目标：（1）Talking about the history of inventions(谈论重要发明的历史及用途)（2）能用被动语态正确表达发明物的历史。如：It was invented in 1876. It was invented by Bell.2、知识目标： 学会使用含有被动语态的不同句型结构“When was it invented?” 和“Who was it invented by?”来谈论各种发明物的历史。 3、能力目标： 通过了解一些中外发明者的事迹，培养勤奋学习、
2、立志为社会多做贡献的精神。二、重点知识1、重点单词invent, mistake, ancient, produce, pleasant, pie, throw, century, notice, including, knock, basket, metal, below, towards, develop, risen基本要求：会读、会写、会用。2、重点短语be used for, by mistake, in the end, by accident, according to, fall into, in this way, knock into基本要求：会读、会写、会用。3、重点语法
3、The Passive Voice(被动语态的用法):1. When was / were . invented?2. Who was / were . invented by?3. What is / are . used for?基本要求：理解其含义，学以致用。三、导学案Section A例析导学1. When was it invented?invent v. 发明，创造 例如：He has invented a new way of making silk. 他发明了一种制造丝绸的新方法。Do you know who invented computers? 你知道谁发明的电脑吗？【拓
4、展】（1）inventor n. 发明家，创造者，发明者 例如：Edison was a great inventor. 爱迪生是一个伟大的发明家。（2）invention n. 发明（物），创造 例如：Edison had 1,093 inventions. 爱迪生有1，093项发明。2Theyre used for seeing in the dark.它们被用于在黑夜里观看。be used for表示“被用来做”，介词for表示目的和用途，后面接名词或动词-ing形式。Wood can be used for making paper.木材可以被用来造纸。【拓展】含有be used的常用
5、短语：（1）be used as表示“被用作”，介词as意思是“作为”的意思，其后一般接名词，强调使用的工具及手段。This book can be used as a textbook.这本书可以当作教科书来用。（2）be used by表示“被使用”，by后接动作的执行者。This kind of machine is used by farmers for getting in crops.3Battery-operated slippers were invented by Julie Thompson.电池控制的拖鞋是朱莉。汤普森发明的。operate v. 操作，作业【拓展】（1）
6、operate v. 操作，作业 例如：Can you operate the computer? 你会用电脑吗？（2）operate v. 动手术，用于operate on sb. “给某人做手术”。例如：The doctor will operate on his mother at once. 那位医生将马上为他的母亲动手术。（3）operate v. 经营，管理 例如：The company operates ten factories. 这家公司经营着10家工厂。（4）operation n. 手术 例如：She had an operation for stomach. 她做过胃部
7、手术。3. Id like to have a radio because I could listen to music all day.我想有一个收音机，这样我就可以整天听音乐了。本句中的情态动词could用来表示逻辑上或理论上的可能性，而不是某种实际上将要发生或正在发生的可能性。Anybody could make mistake.任何人都可能犯错误。The weather here could be very cold in winter. 冬天这儿的天气很冷。【拓展】could也表示人或动物的内在能力，有某种知识或者技能而能够做某事。He hurt his foot and coul
8、dnt play soccer. 他的脚受了伤，所以他不能踢足球了。专项训练用方框中所给词的适当形式填空：invent slipper use heat helpi. Whats a pen _ for?ii. When was the piano _?iii. I think the light bulb is the most _ invention.iv. When were electric _ invented?v. Is this your _ ice cream scoop? 句析导学When was it invented ?它是什么时候被发明的？这句话使用的是被动语态：(1)
9、. 被动语态表示句子的主语是谓语动词所表示的动作承受者。(2). 被动语态基本结构：be+及物动词的过去分词(如果是不用物动词，其过去分词应带有相应的介词)(3). 被动语态中的be 是助动词，有人称、数和时态的变化。 一般现在时被动语态为：am/is/are+过去分词 一般过去时被动语态为：was/were+ 过去分词 与情态动词连用的被动语态：情态动词+ be + 过去分词(4). 被动语态中动作的发出者或执行者做介词by的宾语，放在句末，by 表示“由，被”的意思如何理解被动语态？ 为取胜更清晰、更深刻地理解被动语态的含义，可以将主动语态和被动语态的句子结构进行比较。 主动语态： 主语+
10、 谓语动词 + 宾语 + 其他成分 被动语态： 主语+ be +过去分词 + by +宾语 +其他成分 如： Many people speak English.被动语态 English is spoken by many people.专项训练1. The bridge _ by the farmers themselves in 1982.A. built B. was builtC. buildD. was build 2. All the books will _ to the children who live in the small village.A. be sentB. se
11、ntC. be sendD. send3. Keys _ used for _ the doors.A. is, openingB. is, openedC. are, opening D. are, opened 4. My mother told me that my homework must _ on time.A. finishB. be finishC. be finishedD. finished 5. When _ the car _?A. did, invent B. was, invented C. does, invent D. in, invented 6. Where
12、 is Mary ? She _in the cinema an hour ago.A. saw B. was seen C. is seen D sees7.A half of the news _ in English.A. is writing B. writes C. are written D. is written 教学设计 1导入新课（1a）:1）让学生看书上的5幅图画，告诉学生这些东西都是在最近150年中被发明的。2）在黑板上写出这五个发明的单词。computer, car, calculator, telephone, TV set让五个学生猜并且写出这五项发明的时间。3）让
13、学生重复这些问题和答案：T: When was the computer invented?（学生重复）SS: When was the computer invented?T: Good Now Tom, what is your guess?S1: 1965T: OK The computer was invented in 1965T: Class, please repeatSS: The computer was invented in 19654）让学生回答下列的四个问题：1 Which one do you think is the oldest? 2 Which one is
14、the newest? 3 Which one do you think is the oldest or the first invention? 4 Which one is the newest or last invention?5）让学生看方框中的例子，然后让学生们练习这个对话。A: I think the telephone was invented before the car B: Well, I think the telephone was invented after the car6）让学生四人一组讨论这五项发明，用上面的对话作为例子练习。这样就能找出这五项发明的正确时间。2听力练习（1b）：1) 这一部分让学生在对话中练习目标语言。2) 让学生说出图中五项发明的名字，然后看看左面的发明时间。3）播放录音。Answersd 1876 a 1885 e 1927 c 1971 b 19763对话练习（1c）：1)要求两个学生先读一遍对话： SA: When was the telephone invented?SB: I think it was invented in 18762）让学生两人一组，用1b中的信息练习对话，告诉他们互相交换练习。4听力练习：2a读这三项发明Shoes with adjustable heels，battery operated
