1、九年级英语第九 单元教案人教版Unit 9When was it invented?第一课时单元分析与提示教学目标语言目标:1、掌握一般过去时的被动语态。2、学会谈论发明的历史,会使用以下的基本句子:When was the car invented?Who were they invented by?What are they used for?dark认知目标弄清主动语态与被动语态的差异,通过练习和运用加以巩固情感目标1、通过本单元学习使学生懂得人类的科学发明创造了丰富的物质文明;2、培养学生的创造发明的能力的愿望。教学重、难点一般过去时态的被动语态1、基本结构:助动词be(was / w
2、ere)+及物动词的过去分词A thief was caught last night.They were asked to speak at the meeting.肯定式:It was made.否定式:It was not made.It was inverted in 1885.They were inverted by Theyareusedforseeinginthe疑问式:Was it made?No, it wasntYes, it was2、主动语态被动语态1)主动结构的宾语变为被动结构的主语;2)主动结构的谓语动词由主动语态变为被动语态;3)主动结构的主语变为介词by的宾语
3、,组成介词短语,放在被动结构中谓语动词之后。在动作的执行者无须说明或不必强调时,by短语可以省略。4)主动语态、被动语态两种时态要保持一致:We repaired the motor.The motor was repaired by us.教学安排4课时第一课时:Section A: 1a, 1b, 1c, 2a, 2b, 2c第二课时:Section A: 3a, 3b, 4第三课时:Section B: 1a, 1b, 2a, 2b, 2c, 3a第一课时:Section B: 3b, 4a, 4b and Self CheckUnit 9第二课时Teaching aims学习一般过去时
4、的被动语态和特殊疑问句。Teaching of new lesson1. Warm-upAsk the students to be familiar with the words below according tothe pictures on computer.Telephone, calculator, car, personal computer, TV, electric light, lightbulb, alarm, clock, microwave oven, electric slipper.2. Presentation1)教学When was the car inven
5、ted? It was invented inChoose the three inventions of these and ask students to guess wheneach one was invented.Forexample,youmightchoosecar,telephone,andpersonalcomputer.Haveseveraldifferentstudentsguessandwritethedatesontheboard. Ask the class to repeat the questions and answers.T=Teacher, S=Stude
6、ntT: When was the car invented ? (Class repeat.)T: Good. Now Jackie, what was your guess?S1: 1900T: OK. Jackie, repeat after me. The car was invented in 1900.Repeat the process with several different inventions.At last, make students find out the real dates.2)教学Who were the light bulbs invented by?
7、And what are theyused for ?呈现Edison and light bulbs的画面。Tell the students Edison invented light bulbs.Then ask the students to answer the questions below.T: Who were light bulbs invented by? ( Class repeat )T: Good. Now Class repeat after me. They were invented by Edison.3)教学操练1a, 1c, 2c学生看书本上1a的图画,根
8、据图画,把1a, 1c, 2c中的语言点综合起来,叫学生相互间回答问题。并用刚刚学到的目标句型来操练。最后,抽查几对学生,让他们在全班面前,按要求进行对话。4)教学1b, 2a, 2b首先,帮助学生明确本题的要求。接着,听力练习,学生根据录音内容完成1b, 2a and 2b.最后,重放一遍录音内容,学生跟读。3、Consolidation and Extension.完成一个任务Ask some students to read about an invention using an encyclopediaorotherbookfromthelibrary,orbylookingupinf
9、ormationontheInternet.Havethestudentswriteupashortreportanddrawasimplepictureoftheinventionorbringinaphotoofit.Askeachstudentstoshow the picture and read his or her report to the class.Homework1、根据时间和人物写出发明物。1) 1885_3) 1927_2) 1876 _4) 1976 _6) Chelsea Lanmon _5) Julie Thompson _Teaching aims1、熟练掌握被
10、动语态用法。Unit 9第三课时2、学会用被动语态表达对创造和发明事物的认识和看法。Teaching of new lesson1. Warmup:Ask the students to practice speaking.A: When was invented ?B: It was invented in A: Who was it invented by ?B: It was invented by A: What is it used for ?B: It is used for 2. Presentation.1)教学helpful, annoyingAsk students to
11、give some examples to show what each word means.For example.A vacuum cleaner is helpful.A very loud truck is annoying.2)教学3a呈现alarmclock,lightbulb,microwave over,tea,andsoon的画面。Then ask the students the following questions.T: Is the light bulb useful or annoying ? ( Opinions may differ. )S1: I think
12、 its useful.T: Why is it ?S1: Well, it gives people more time to work and play every day.Then ask the students to make a list of five helpful inventions andfive annoying inventions on their own. Give the class about five minutesto do this.3)教学操练3bAsk the students to work in pair the following talk u
13、sing the targetlanguage.A: What do you think is the most helpful / annoying invention?B: I think the most helpful / annoying invention is A: Why is that ?B: Well, it gives people3. Consolidation and ExtensionImagine that you are alone on a tiny island, Choose five inventionsyou would like to have on
14、 the island with you. Tell the group what youchose and why.Homework句型转换1. She was seen to come out of the library by him.(变被动语态)2. When are trees often planted?(变被动语态)3. The League was founded in Guangzhou in 1922(就画线部分提问)4. Did the students wear the school clothes a lot ?(变被动语态)5. Kate took god car
15、e of the baby yesterday evening.(变被动语态)1.His aunt bought him a bicycle.(变被动语态)2.His aunt bought him a bicycle.(变被动语态)Teaching aims学会表达由于这些创造和发明对你的生活的帮助和对生活质量的提高认识Unit 9第四课时Teaching of new lesson1. Warmup.Ask the students to practices talking to each other.A: What do you think is the most helpful inv
16、ention?B: I think the most helpful invention is A: Why do you think so ?B: Well, it gives me2. Presentation教学1aFirst the teacher asks the students what kind of fruit food and drinkyou like the best and writes down on the blackboard.Such as: potato chips, ice cream, tea, lemon, chocolate, oranges, sa
17、lad,popcorn, pickle and so on.教学2a, 2b.1)首先,听力前的brainstorm.First, Let students describe how potato chips taste and describe howhelpful the potato chips.Then, ask: When and where were potato chips invented?Who were potato chips invented by?How were potato chips invented?Key words: by accident, custom
18、er, restaurant, by mistake.2) at last,听力练习,要求学生快速阅读2a, 2b.帮助学生明确听力语言目标的要求。接着,听力练习,学生根据录音内容完成2a and2b.3)教学阅读3a呈现a cup of tea和the emperor( who was Shen Nung) was boilingdrinkingwateroveranopenfire的画面。Thenaskthestudentsthefollowing questions.T: What is tea used for ?When was it invented ?Who was it inv
19、ented by ?How was it invented ?Then ask the students to make a list of five helpful inventions andfive annoying inventions on their own. Give the class about five minutesto do this.3. Consolidation and Extension完成一个任务: Blind Taste TestAsk a students to bring to class some foods that taste sweet, cri
20、spy,salty, and sour. Have him or her blindfold students one at a time, let thestudent taste little piece of each food, and say if each food is sweet, crispy,salty,orsour.Studentsmayusemorethanonewordtodescribesomefoods.Homework用动词的适当形式填空。A: When _ the Dinosaur World _ (build) ?B: It _ _ (build) in 1
21、988. you will see many kinds ofdinosaurs in it. Shall we go to see them ?A: Yes, Id love to. But where is the entrance?B:Here,thissidedooris_(use)asanentrance.Theressomething wrong with the front door. Its _ (lock).A:Wow,thesemustbedinosaureggs.Where_they_(discover)Teaching aims1、通过对被动语态表达的发明和创造的事物来
22、认识人类科技进步和培养学生的创新能力来表达情感,态度,价值观的课堂体现。2、通过对一般过去时被动语态的掌握进一步了解和掌握被动语Unit 9第五课时态其他时态的表达。Teaching of new lesson1. Warm-up呈现: computer, radio, camera, light bulb, car, bicycle, TV, tea, andso on.Then ask students to discuss pictures and say something about whathe / she would like best in class.2. Presentat
23、ion.1)教学首先,写作前的brainstormFirst, read the instructions to the class and make students look at thesample first sentence of 3a.Then,explainthatstudentscancombinemorethanonepointintoone sentence.2)教学写作3b, 4a.Finish 3b according to working in pairs.At last, ask a few students to tell the class about thep
24、artners theyhave interviewed.Finish 4b说明:通过该活动用语言目标提供阅读和写作练习。3)教学Self Check 2让学生找出SelfCheck2.这些东西是何时发明的并根据如下句子进行俩俩对话。A: What is it ?B: Its an abacus. Umbrella / a binoculars, camera, bucycle.A: What is it used for ?B: Its used for A: Oh,thats cool! Who was it invented by?B: It was invented by A: Wha
25、t would you like best ?B: Id like best .3. Consolidation and Extension完成一个任务: Crazy InventionsAskstudentstobuildtheirowncrazyinventionsusingpaper,cardboard and other materials they may have at home. Have them bringtheir inventions to class and say something in class.Homework汉泽英1、计算机是何时发明的?2、谁发明了计算机?3、计算机是用来做什么?4、你认为什么是最有用的发明?5、它能够给人们更多时间工作和玩。
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