省厦门市第五中学九年级英语全册 Unit 9 When was it invented学案
九年级英语Unit9 when was it invented讲解及练习
第 1 页 （共4 页） 第 2 页 （共4 页）学校 姓名 班级 考场 考号---------------------------------○密------------------ -------------------○封----------------------------- -- --○线----------------------------※※※※※※※※※※※※※※※答※※※※※※※※※※※※※※※※※※题※※※※※※※※※※※※※※※※线※※※※※※※※※※※※※九年级英语Unit9 when was it invented?讲解及练习1. 被动语态(1). 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+ 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. 2. 本单元要掌握的句型 见课本P69 中的Grammar Focus 3. invent v. 发明 inventor n. 发明家 invention n. 发明 可数名词4. be used for doing 用来做…(是被动语态) 如： Pens are used for writing. 笔是用来写的。
九年级英语全册_Unit_9_When_was_it_invented全单元课件人教新目标版
b
e d
76___
1885___ 1927___
c
1971___
1976___
1a
Answer : the right order they were invented
5
2
4
1
3
Pairwork (1c:P68)
A: When was the _______ invented? B: I think it was invented in ______. 1971 1927 1876 1885 1976
in 1885 in 1876
in 1927
in 1971
in 1976
Edison invented the light bulb.
Who was the light bulb invented by?
The light bulb was invented by Edison.
Bell invented the telephone.
• • • •
such+名词/名词短语 so+形容词/副词 such （a/an）+ adj. +n. so + adj./adv.或so + adj.+ a/an +n.
• • • • • •
take place 发生；出现 in the 19th century 在19世纪 The popularity of…..的普及 without doubt 毫无疑问 at a low price 以低价 translate ….into …把……翻译成……
四、无被动语态的动词。
• 不及物动词及系动词 • happen • take place • die • rise • come true • come out eg.1. An accidenthappened (happen) just now. 2. I’m sure that my dream will come true. (come true) some day in the future
九年级英语Unit9 When was it invented
轧东卡州北占业市传业学校九年级英语Unit9 Whenwas it invented练习一.选择填空1. A Knife is used for ________ thingsA cutting B. cut C cuts D to cut2.Anna is ______to choose her own clothes .A. allowedB. allowsC. allowing D . allow3.He finished the homework _________.A. in the endB. o the endC. by the endD. at the end4.Pens ______writing .A . used to B. are used as C. are used by D. are used for5.__________ is used for seeing in the dark .A The shoes with adjustable heels B. The battery –operated slippersC. The heated ice cream scoopD. The flying disk6.I can’t wake up in the morning . What shall I do ? Buy _______, it may help .A. a light bulbB. a microwave oven C an alarm clock D. a binoculars7.Your city looks beautiful ! Yes . Lots of trees and grass _________last year.A. are plantedB. have planted C . were planting D . were planted8.Where is Mary ? She _____in the cinema an hour ago.A. saw B, sees C. is seen D. was seen9.Look! A boy is falling _______the river. Let’s go and save him.A. into .B. lffC. over D down10.I took the wrong train _____, I didn’t even know it until half an hour later.A. by mistakesB. by mistakeC. with mistakeD. with mistakes二. 用所给词的适当形式填空1. The soup is too ______(salt ) I don’t like it .2 Sony is the ________ (thin )boy in the class .3. The water is _________ (boil) now .4. The flowers produced a ______(please ) smell .5. Who were they ____( discover ) by ?6. It’s ______(use ) for scooping really cold ice cream .7. What do you think is the most _______(invent )?8.Tea ____(not bring ) to the Western World until 1610.9. The potato chips were invented by a chef __________(call ) George Grum.10. This _____(much love ) sport is enjoyed by young people .11. Do you think the alarm clock is an ________( annoy ) invention ?12. It is played by more than 100 million people in over 200 countries ______(include ) China .三. 根据句意提示或首字母提示.用适当的词补全句子1.Although it was expensive . we __________to buy it (决定)2.I’ll do it _____to your instructions .(根据)3.We went to a________ restaurant (附近)4.Who _______ America first ?(发现)5.I like eating ______(脆的)cookies s. They are hard , dry and easily broken .6.I met her by a________ in a crowded bus .7.When autumn comes , the l_____on the tree begin to fall .8. A c________ means a hundred years9.Dr Naismith created a game to be played on a hard wooden floor , so the s_______of the players was important10.Since the basketball game became an Olympic event , the p______ of basketball.四.句型转换1.The water is used for watering the flowers (对划线局部提问)________ __________the water used for ?2.The students clean the room every day .(改为被动语态)The room ________ ________by the students every day .3.The computer was bought by my father last month (改为主动主态)My father ______ the computer last month.4.I was asked to play the piano .( 对划线局部提问)________ _______ you ________to do ?5.This kind of telephone was invented in 1985 . ( 对划线局部提问)_______ ______this kind of telephone _________?6.They stayed there until 11 o’clock .(同义句)They _________ leave there _______11 o’clock .7.They were invented by Julie Thompson( 对划线局部提问)________ _ ________ they invented _________?8.It was invented by acdident . ( 对划线局部提问)_______ was it invented ?。
九年级英语全册《Unit 9 When was it invented》(第1
《Unit 9 When was it invented》（第1课时）Section A教案Step1 revision and Lead-inT: Hello, boys and girls. This week we will begin a new unit about inventions. You can see inventions all around us, from TV to car, from food to c lothing. We should say nobody can live without them. Don’t you think so? Can you imagine one day without inventions? Yes, we live in a world of inventions. These inventions make our life easier and more comfortable. In this unit, we will lea rn some inventions and their history. First, let’s get to know some new words.Step2 1aRead the inventions to the students. Call students’ attention to the five pictures. Point to each picture and let students tell wh at it is.Step3 1bG et the whole class to read the instruction together. We will listen to a girl and a women talking about the five inventions. Listen carefully and match the inventions with the dates. Play the tape twi ce.Step4 1c Ss: That’s impossible.Students explain in their own words the words in page 1 in the workbook.Ma ke two sentences with the new words.Write the names of the five inventions on the blackboar d.Guess and write the dates on th e board. Repeat the questions and answer like this:What was the computer invented?The first time students only listen and try to catch the main idea. Then match theAsk a pair of students to read this conversation to the class.Then get students to practice in pairs. Using the information in Activity 1b.Step5 s ummaryIn this class, we have learned to talk about the history of inventions with passive voice. And we have done inventions and dates. Follow the tape and repeat several times.A: When was the telephone invented? B: I think it was invented in 1876.教师活动学生活动备注（教学目的、时间分配等）much listening practice and oral practiceStep6 homeworkWrite out two conversations in Activity 1a,。
九年级英语全册 9 When was it invented Section B
轧东卡州北占业市传业学校Unit 9 When was it inventedSection B and Selfcheck二、根据提示写出单词的适当形式1. Silk is _____________ (生产) in Hangzhou.2. He met his best friend by ______ (偶然).3. Which do you like better, _______ (柠檬) or oranges ?4. I think the most _________ ( 令人恼怒的) invention is the alarm clock.5. A_________ to today’s newspaper, the price of pork(猪肉) has gone up.6. Stop ______________ (投，掷) stones at the window! It’s dangerous.7.Today I ____________ ( 注意到) she wears a pair of shoes with adjustable heels.8. Zhang Shaohan’s songs are _____________ ( please ) to the ear.三、选择填空1. – Your city looks beautiful! – Yes . Lots of trees and grass _______ last year.A. are plantedB. have plantedC. were plantingD. were planted2. The camera is used for ______ photos.A. to takeB. tookC. takenD. taking3. – I’m very sorry,Jack. I’ve taken your sports shoes ___.- That’s all right. After all, we are good friends.A. by mistakenB. wrongC. on mistakeD. by mistake4. The mixture smelt terrible but Tom ______ taste it.A. was made toB. was madeC. made toD. made5. I ______ for them at the bus stop for quite some time ______ it began to rain.A. didn’t wait, untilB. didn’t wait, because ofC. waited , untilD. waited, because6. ______over several days the artist and his mouse became good friends.A. On the wayB. In the wayC. By the wayD. In this way7. The first computer _____ by Charles Babbage.A. was inventedB. is inventedC. inventedD. has invented8. English is widely used ______ travelers and business people all over the world.A. toB. forC. asD. by9. No one knows where the old watch _______. A. found B. was found C. is found D. finds10. Can you tell me _____ the train was invented ? A. what B. who C. where D. whom√11.There was an important meeting last night. Mr Smith ______ to it.A. was invitedB. invitedC. is invited D . invites√12. People say that the cars made in Japan are much cheaper than _____ made in America.A. onesB. thoseC. thatD. it四、根据汉语提示完成句子1.它们用来在黑暗中看东西。
九年级英语全册《Unit 9 When was it invented》(第5
《Unit 9 When was it invented》（第5课时）教案课题：Unit 9 When was it invernted? <5> 讲课教师：学科：Engl ish 课时：5 总课时数：58教学目标知识与技能To learn to use passive voice (questions and statements)To read about tea过程与方法To t rain students’ reading an d writing skills.情感态度与价值观Train the students to use their heads and make someinventions in life and love China traditional culture.教材分析教学重点The new words and phrases to express differet kinds offood.教学难点Passive voice (questions and statements)教学过程教师活动学生活动备注（教学目的、时间分配等）Lead-inGreetings and Duty Reaport.Talk about your favorite inventionsLast period ,we talked about potato chips. So I know tha t most of you like potato chips. And there are so many kinds of traditional food. Like tea, who likes drinkin g tea? Hands up! Wow, so many of you have the same interest as me. As a kind of drink, tea ca n make us energetic. It is also good for our health. So next , let’s learn about the history of tea, shall we? Interaction and Consoladation Have a duty report. Listen ask andanswer.5’1.New wordsancient ~ historylegend [uc] the ~ of …bush in bushesremain 作系动词时后接形、名、分词和介词短语notice~ sb. do sth. 注意到某人做了某事~ sb. doing sth. 注意到某人正做某事produce---- ~rpleasant--- pleasedmixture a ~ of …mix v.pie a ~ dishflyingbakery bakeriesthrow --- threw --- thrownthrow sth at… throw awayby accidentaccording tofall intoin the way3a.1） Fast-readingAsk the students to read the article as f ast as they can and answer the f ollowing questions:1.What is the article about ?2.When was it invented?3.Who was it invented by?4. How was it invented?2) Careful-readingAsk the stud ents to read the articleas carefully as they can, and ask them try to remember the important poin ts. Then, ask them to completethe article. 系动词除be外还有:六变化get, turn, become, grow, go, come 五感觉: look, sound, feel, taste, smell 三保持: keep, stay, remainMake setences.Read the article and learn to the way of reading.29’教师活动学生活动备注（教学目的、时间分配等）Useful expressionsby accident, bring…to the Western world, over three thousand years, according to, boil sth over an open fire, fall into, produced a pleasant smell, taste the hot m ixture, one of the world’s favorite drinks3b.We’ve learned the history of tea. Next, let’s learn about the history about the flying diskTalk about the notes.Write an article using the notes.4b Talk about some inventions SummaryWhat did we learn？Exercise4a Write the detail in the chart. HomeworkRetell 3a and prepare the next. Make setences.Work in pairs.5’5’1’。
九年级英语第九册--unit-9when-was-it-invented-教学课件-人教新目标版2
battery-operated
slippers
Julie
Thompson
heated ice cream scoop
Chelsea Lanmon
shoes with adjustable
heels
Jayce Coziar and
Jamie Ellsworth
第十一页，编辑于星期五：十四点 分。
music candle activity glasses
temperature cup
第十二页，编辑于星期五：十四点 分。
New invention: a pen that listens and writes
Use: It can listen to the writer and write by itself.
Price : $ 50
第十三页，编辑于星期五：十四点 分。
第六页，编辑于星期五：十四点 分。
1b
a
Listen and match the inventions
with the dates.
b
e
1876
1885
d
c
1927
1971
1976
第七页，编辑于星期五：十四点 分。
1885
1976 1876
1927
1971
A: When was the _c_a_r____
第四页，ቤተ መጻሕፍቲ ባይዱ辑于星期五：十四点 分。
Bell invented the telephone. T_h_e_t_e_l_e_ph_o_n_e_ was invented by B_e_ll_.
第五页，编辑于星期五：十四点 分。
Bell
九年级英语全册 Unit 9 When was it invented(第4课时)教案 人教新目标版
Unit 9 When was it invented【教学目标】1）掌握以下词汇：by accident, beverage, according to, ancient, legend, bush, fall into, remain, notice, produce, pleasant, mixture, in this way, pie, flying disk, bakery, throw2）掌握并会运用下列短语和句型。
the most popular drink, in the world, the western world, over three thousand years, an ancient Chinese legend, the emperor Shen Nong, produce a pleasant smell,college studentsDid you know that tea was invented by accident?Although tea wasn’t brought to the Western world u ntil 1610, this beverage wasdiscovered over three thousand years before that.The emperor noticed that the leaves in the water produced a pleasant smell.And in this way, one of the world’s favorite drinks was invented.读：通过学习本课短文，能够读懂有关发明创造的文章。
说：利用所给提示，能比较流畅地复述课文。
写：能用本节课所学知识，描述茶叶发明创造的历史。
通过学习本课了解发明的历史，开阔视野，扩大知识面。
【重点难点】重点：熟练掌握本课的短语及句型。
九年级英语-Unit9_When_was_it_inventedAqqwUH
Unit9 When was it invented?The third Period一教学目标1 知识目标1) by accident beverage according ancient boil bush fall into remainproduce pleasant pie throw abacus century2) bakery Bridgeport Connecticut flying disk lemon binoculars2 能力目标掌握一般过去时被动语态的含义、构成及用法，弄清主动语态与被动语态的差异。
3 情感目标养成勤于思考，善于总结的好习惯，培养爱国主义精神。
二教学重难点When was it invented?It was invented by….三教具准备多媒体四教学方法Task-Based Language Teaching五教学进程Step1 Organization1 Greetings with each other2 Check the homework of last lessonStep2 Presentation1 T: Please read the instructions and then read the article once all the way through, Please circle any words or phrases that you don’t understand.Ss: Read the article and circle the words or phrases.T: Please raise your hands and read to the class any words or phrases you don’t understand.. ( If possible, the teacher had better ask other Ss to explain or define the new words. And ask Ss to say in their own words any sentences that other Ss don’t understand.)Ss explain the words or the phrases.2 After the Ss read the article, answer these questions.（出示幻灯片）1）What is the article about?2）When was it invented?3）Who was it invented by?4）How was it invented?3 Read the instructions to the class, explain that Ss can combine more than one point into one sentence.Ask Ss to complete the work in pairs, then ask a few Ss to tell the class about the partners they have interviewed.Step 3 Pair workImagine you are a businessperson, ask your partner questions about his or her invention. Then try to sell your partner’s invention to the class.Step4 PracticeAsk Ss to fill in the blanks on their own.crispy sweet salty sour1 I don’t like eating chocolate. The taste is too ____.2 Mom added salt but it still wasn’t ____ enough.3 I prefer lemons to oranges. I like the ____ taste.4 She likes ____+ cookies. They are hard, dry and easily broken.Step 5 利用幻灯片，出示abacus, umbrella, binoculars, camera, bicycleAsk the Ss to find out when these things were invented, then write paragraphs about them, ask several Ss to read their paragraphs to the class. (T: Correct the answers.)六作业设计write a composition （写一篇80字左右的短文）爱迪生出生于美国，是一位伟大的发明家。
九年级英语全册 Unit 9 When was it invented(第5课时)Self chec
Unit 9 When was it invented?第5课时 Self check and revision一．背记单词1.味道2.柠檬3.小甜饼4.算盘5.双筒望远镜6.世纪;百年二．根据句意填空。
1.The abacus was ________ by Chinese people .2.Li Lei likes ______ cookies because they are hard , dry and easily broken .3.The meat produced a ________ smell.4.The most popular drink in the world was invented by ________.5.There are many __________(发明) in this museum.6.How was the tea ________ (发明)?7.Silk is __________(生产) in Suzhou and Hangzhou .8.He always makes a lot of ________ (错误) in class .三．句型转换1.People all over the world enjoy surfing .(同义句转换)Surfing ___ ______ by people all over the world.2.When he was thirty , Tom decided to move to London . (同义句转换）At the ____ of thirty , Tom made a ________ to move to London3.Kate took good care of the baby yesterday evening .(改为被动句）The baby ____ ____ ____ ______ by Kate yesterday evening .4.She was seen to come out of the library by him .(改为主动句)He ____ ___ ____ out of the library .5.Did you see the film last night ?(改为被动句)____ the film ____ by you last night ?6.Li Lei gave Tom a new pen last week .(改为被动句)A new pen ___ _____ __ Tom last week .7.He didn’t go to bed before he finished his work .(同义句转换)He ____ ___ go to bed ____ he finished his work.四．单项选择1. The bridge __________ by the farmers themselves in 1982.A. builtB. was builtC. buildD. was build2. All the books will _______ to the children who live in the small village.A. be sentB. sentC. be sendD. send3. Keys _______ used for ______ the doors.A. is, openingB. is, openedC. are, openingD. are opened4. My mother told me that my homework must _______ on time.A. finishB. be finishC. be finishedD. finished5. The police found the lost car _______.A. with mistakeB. by accidentC. by mistakeD. in accident6. I don’t like this kind of potato chips because they are not _______.A. crispyB. sweetC. softD. sour7. They decided _______ at the end of this month.A. to leaveB. going backC. travelD. not stat out8. It’s used for _____ clearly in the dark.A. seeingB. seeC. lookingD. look9. When ______ the car ________?A. did, inventB. was, inventedC. does, inventD. in, invented10. Jack ______ leave _____ his teacher comes back.A. doesn’t, untilB. /, untilC. won’t, /D. won’t, until。
九年级英语全册《Unit 9 When was it invented》(第4课时)教案 人教新目标版
________________________
Homework
Sum up and write the useful expressions , prepare the next.
Do the exercises.
So why don’t we listen to the tape and
try to get the answer?
2b1) Predicte the answers to the listening t est.
2) T rain them to listen and write the important part of answers.
过程与方法
Totrain students’ reading ,listening and speaking skills.
情感态度与价值观
Train the students to use their heads and make some inventions in life.
教材分 析
教学重点
5’
5’
1’
板 书
Unit 9 When was it invented? <4>
be invented by mistake, in a bad mood
on the bag cut…really thin
back in 1853 cook…a long time
send…back sprinkle…on…
2c Pairwork
Do you think the history of potato chips is so interesting? Next let’s role play the conversations about it.
九年级英语全册Unit9Whenwasitinvented第三课时教学设计人教新目标版
教课目标教课剖析教课资源板书设计九年级英语全册Unit9Whenwasitinvented第三课时教课方案人教新目标版知识与 1.Key Vocabulary: sweet, salty, crispy, sour, potato, chip, mistake, by mistake.技术thin, in the end, chef , sprinkle2.The target language：Did you know potato chips were invented by mistake?No, I didn't know that. Who invented them?过程与According to listening to train the students' speaking and listening skills with方法the target language.感情态Do you enjoy eating the potato chips?Have you ever thought of the history of度价值the chips?观教课1． Train the students' speaking and listening skills with the target language.要点2． Teach the students to use the new vocabulary correctly.教课难点Do the listening practice.难点A tape recorder , CAIUnit 9 When was it invented?The Third PeriodA:Did you know potato chips were invented by mistake?B:Wow, I didn't know that. Who invented them?A: They were invented by a chef called George Crum.教课过程设计（第课时）教课环节教师活动学生活动Step 1 RevisionHave a free talk.Ask the students Practice talking to eachto practice talking to each other。
福建省厦门市第五中学九年级英语全册 Unit 9 When was it invented学案(无答案) 人教新目标版
Unit 9 When was it invented 版班级： 座号： 姓名： 课题：Unit 9 When was it invented?第一课时The first period (Section A 1a-Grammar Focus)一、学习目标(一）知识目标：使学生理解、应用有关发明史话题的短语、句型。
(二）能力目标：使学生学会简单的介绍发明史。
(三）德育目标：使学生了解发明史，更加热爱科学，热爱创造发明。
学习重点:重点单词：invent ，calculator ，slipper ，electric 重点词组：be invented by ， be used for doing sth ， see in the dark重点句型: When was/were … invent ed ? It was /They were invented in …（发明时间）Who was/were … invented by ? It was/They were invented by…(发明者)W hat are they used for? They’re used for doing…(用途.学习难点: Who was/were … invented by ? It was/They were invented by …(发明者) 学习过程：一、检查课前预习：◆教学以上重点单词、词组及句子 ，完成重点词组汉译英检测1. 被发明__________________________2. 被用来……____________________________________3. 在1876年_______________________4. 在电脑（发明）之前___________________________5. 被贝尔发明_______________________6. 照明 ______________________________________ ◆根据情景提示完成句子:1.你想知道小轿车是什么时候发明的，你会这么问：______________________________________________________________2.你想说电动拖鞋是被用来在黑暗中看东西的，你会这么说：_______________________________________________________________3.你想问电脑是被谁发明的，你会这么问：________________________________________________________________4. 朋友问你电灯是谁发明的，你会这么回答：________________________________________________________________5. 你告诉同学电话是1976年发明的，你会这么说：________________________________________________________________ 二、课堂活动：1.听1b 录音填写表格，并补全句子。
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Unit 9 When was it invented版班级： 座号： 姓名：课题：Unit 9 When was it invented?第一课时The first period (Section A 1a-Grammar Focus)一、学习目标(一）知识目标：使学生理解、应用有关发明史话题的短语、句型。
(二）能力目标：使学生学会简单的介绍发明史。
(三）德育目标：使学生了解发明史，更加热爱科学，热爱创造发明。
学习重点:重点单词：invent ，calculator ，slipper ，electric 重点词组：be invented by ， be used for doing sth ， see in the dark重点句型: When was/were … invent ed ? It was /They were invented in …（发明时间）Who was/were … invented by ? It was/They were invented by…(发明者)W hat are they used for? They’re used for doing…(用途. 学习难点: Who was/were … invented by ? It was/They were invented by …(发明者) 学习过程：一、检查课前预习：◆教学以上重点单词、词组及句子 ，完成重点词组汉译英检测1. 被发明__________________________2. 被用来……____________________________________3. 在1876年_______________________4. 在电脑（发明）之前___________________________5. 被贝尔发明_______________________6. 照明 ______________________________________ ◆根据情景提示完成句子:1.你想知道小轿车是什么时候发明的，你会这么问：______________________________________________________________2.你想说电动拖鞋是被用来在黑暗中看东西的，你会这么说： _______________________________________________________________3.你想问电脑是被谁发明的，你会这么问：________________________________________________________________4. 朋友问你电灯是谁发明的，你会这么回答：________________________________________________________________ 5. 你告诉同学电话是1976年发明的，你会这么说：________________________________________________________________二、课堂活动：录音填写表格，并补全句子。
2. 听2a、2b 录音在横线上填入适当的词，每空一词：A: Look at those battery-operated slippers. What are they used for ?B: They are used for _________ in the dark.A: Oh, that’s cool! Who were they invented _______?B: Julie Th ompson. And this heated ice cream scoop is used for scooping _____reallycold ice cream.A: Right. It was __________ by Chelsea Lanmon.B: My __________ are those shoes with adjustable heels. You can move the heels up and__________.三、课堂探究生活中有很多和我们息息相关的发明物，请根据下面表格提供的信息，写一篇作文向大家介以下发明。
要求：发明人、用途._____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ _______________________________________________________________________________厦门五中2013～2014学年上学期2011级英语学科教学案班级：座号：姓名：课题：Unit 9 When was it invented?work）一、学习目标（一）知识目标：使学生掌握并会应用相关话题的词汇和句型。
（二）能力目标：使学生学会描述最喜欢或最不喜欢的一项发明。
（三）德育目标：使学生学会认真观察生活，发现、观察身边的发明、创造。
二、学习重点和难点学习重点:1、重点词组：helpful /annoying invention；an alarm clock; light bulb ; microwave oven2、重点句型（1）A：What do you think is the most helpful invention?B：I think the most helpful invention is the light bulb.（2）I’d like to have a radio because I could listen to music all day.学习难点:教会学生陈述某项发明的利弊及原因。
教学过程：一、检查课前预习◆教学以上重点单词、词组及句子，完成重点词组汉译英检测1. 最有用的发明______________________2.最恼人的发明__________________________3.微波炉____________________________4. 闹钟_________________________________5.灯泡______________________________6. 在一座小岛上_________________________7.独处______________________________8.最好做_______________________________◆根据情景提示完成句子:1.你想知道朋友认为什么是最有帮助的发明，你会这样问：_________________________________________________________________2.朋友问你为什么灯泡是最有用的发明，你会这样回答：__________________________________________________________________3.朋友问你什么是最恼人的发明，他会这样问：____________________________________________________________________4. 你想知道电话是什么时候发明的，你会这么问：_____________________________________________________________________5. 你想问微波炉是被谁发明的，你会这么问：________________________________________________________________________I二、课堂活动：1.根据对话内容，填上适当的单词，每空一词：1.A: What is this? B: It is an ______________.A: What is it used for? B: It is used f or ___________people up.A: Do you think it is _______________?B: Yes, it always wakes me up. But sometimes it is _____________when I want to sleep.课外拓展写作：生活中，发明无处不在，请以My favorite invention为题，介绍一项你最喜欢的发明，并说明喜欢的理由，以及它如何影响你的日常生活。