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1、英语九年级上册第九单元教学案执笔人 张平 Section A 第一课时课前预习翻译下列句子或短语be used for _ be invented by _ light bulb_operate on sb._ microwave oven_陷入 （ ） 意外的（ ） 用这种方法 （ ）1. When was the telephone invented ?_2. What are they used for ?_3. What do you think is the most useful invention ?_4. I d like to have a radio because I c
2、ould listen to music all day._一、 重点讲解及课堂练习一、重点单词1、invent v. 发明，创造 例：Do know who invented the computer? 你知道谁发明了计算机吗？拓展invention n. 发明（物），创造物 例：Here are some important inventions in human history. 这是人类历史上的一些重要发明。 Inventor n. 发明家，该词是由动词invent+or 构成的名词。 例：Edison was a great American inventor. 爱迪生是一位伟大的美
3、国发明家。Operate v. 操作，操纵，开动；运转，工作；管理，经营；起作用，奏效；动手术，开刀例：This machine does not operate smoothly. 这台机器运转不灵。The doctor operated on the babys eyes. 这位医生给这个婴儿做眼部手术。自我测评：1.Thomas Edison was a great American (invent). He had more than one thousand (invent) in his life.2.The boy is badly hurt, so he needs an (手
4、术) at once.3.Personal computers about 30 years ago. A. invented B. was invented C. were invented D. inventing4.These new types of computers are easy . A. operation B. to operate C. to operation D. operation5.When was umbrella ? A./;invented B. a;discovered C. an; discovered D. the; invented6.The doc
5、tor operated him at once and he at last. A. with; was saved B. on; saved C. on; was saved D. with; saved二、重要短语1、be used for 被用于，其中的for是介词，因此其后跟名词或动词作介词宾语。例：A knife is used for cutting. 刀是用来切东西的。辩析be used for, be used as , be used by ，be used to do sth., used to do sth. 与 be /become /get used to doin
6、g sth.(1) be used for 被用于，被用来做，强调用途或作用。 (2 )be used as （被）作为而使用，强调被当作工具或手段来用。 (3) be used by 被使用，by后跟人或物，强调使用者。 (4) be used to do sth. 被用来做，强调动作，其中used是动词use的过去分词。(5 ) used to do sth. 过去常常干某事，后面跟动词不定式。 (6)be /become /get used to sth/ doing sth. 习惯于某事或干某事，其中used 是形容词，to 为介词。例：Keys are used for openin
7、g locks. 钥匙是用来开锁的。 “swim”can be used as noun. Swim 可以作名词用。 Recorders are often used by English teacher. 英语老师经常使用录音机。The knife can be used to cut meat. 这把刀可用来切肉。He used to swim in the river when he was a child. 孩提时代他经常在这条河里游泳。I have been used to the hot weather here. 我已经习惯了这里的炎热天气。注意在被动词态中经常出现“be +过去
8、分词+ by ”结构。介词 by 之后接名词或代词宾格表示动作的发出者。例：Children are taken good care of by teachers at school. 孩子们在学校受到老师们很好的照顾。自我测评1.Pencils are used . A.to writing B.for write C.for writing D.writing 2.The telephone Bell many years ago. A.invented B.was invented C.was invented by D.invented by3.Raincoats are used f
9、or (keep)off rain.4.This notebook is used to writing down something interesting by the little girl. (改错) 5.Who invented it ?(改为被动语态) Whom it ?三、特殊句型1、What do you think is the most helpful invention? 分析do you think 可以看作是插入语，用“疑问词+do you think+正常语序”的结构。例：What do you think he would do next? 你认为他接下来将做什么
10、？辩析listen to 与 hear Listen to 意为“听”，表示一种“听”的动作、过程，至于结果是否听见则表示不出来；而hear意为“听见”，强调一种结果。例：I listened again , but I still heard nothing. 我又听了一下，但仍然什么也没听到。 listen to me carefully! 仔细听我说！四、疑难句子1、It gives people more time to work and play every day. 它(电灯)每天给人们更多的时间去工作和娱乐。分析动词不定式短语to work and play every day在
11、句中作目的状语。 注意give sb. Some time to do sth给某人一些时间去干某事例：Joining WTO gives Chinese people more chances to find work.加入WTO给了中国人更多找到工作的机会。2、Yes，but thats not going to help you leave the island. 是的，但那也将无助于你离开那个岛。分析1该句中用了help sb. (to)do sth“帮助某人干某事这个词组，动词help后由动词不定式担当宾语补足语，可以带to，也可以不带to。 例：He helps me(do) le
12、arn English every day. 他天天帮我学英语。注意 在这些使役动词和感官动词变为被动语态时，则应该把原来省略的动词不定式符号to加上。例：The child is made to go to bed before nine oclock in the evening by his parents父母迫使那个孩子九点以前上床睡觉。Lucy was heard to sing a song last night. 昨天晚上有人听见露茜唱了一首歌。被动语态概述英语中有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。例如：Many peopl
13、e speak English.谓语：speak的动作是由主语many people来执行的。被动语态表示主语是动作的承受者，即行为动作的对象。巧记为：被动、被动、主被动。例如：English is spoken by many people.主语English是动词speak的承受者。主动态和被动态指的是动词形式，是词法概念；而主动句和被动句则指的是句子结构，从而是句法概念。所谓主动句就是由主动态动词(词组)作谓语动词的句子，而被动句则是由被动态动词(词组)作谓语动词的句子。例如：He opened the door.他开了门。(主动句)The door was opened.门被开了。(被
14、动句)二、被动语态的构成被动语态由“助动词be及物动词的过去分词”构成。人称、数和时态的变化是通过be的变化表现出来的。现以teach为例说明被动语态在各种时态中的构成。一般现在时：amisaretaught一般过去时：wasweretaught一般将来时：willshall betaught现在进行时：amisare beingtaught过去进行时：havehas beentaught现在完成时：havehas beentaught歌诀是：被动语态be字变，过去分词跟后面。三、被动语态的用法(1)不知道或没有必要说明动作的执行者是谁。例如：Some new computers were stolen
