Unit6 When was it invented教案（6课时）人教版九年级英语全册

Unit 6 When was it invented
单元教材分析
本单元围绕“发明”这一话题，学习了解一些重要发明的历史，学习一般过去时的被动语态。Section A介绍了我们日常生活中的一些常见物品的发明历史，如电视、电话、拉链、茶叶等。内容上包括谈论它们的发明时间、被什么人发明、它们的作用和发展等；从语言结构上，学习被动语态的过去时，单元主题图由四副小图组成，呈现的是现代生活中的常见用品：电视、电话、电脑和小汽车。从运用I think it was invented before/after…讨论图片中物品发明的先后顺序开始，到听说训练本单元的重点语言结构：When was it invented？It was invented in…，Who was it invented by？It was invented by…，What was/is it used for？It was/is used for…不断深入学习，再进入阅读训练，训练学生的阅读技巧，学习拓展词汇和语言结构。Section A的重点是培养学生运用被动语态的意识，掌握更多的动词过去分词形式。Section B依然围绕发明创造这个话题，要求学生继续学习巩固相关的内容和语言知识。在语言技能方面，对听说读写的专项训练和综合训练在本部分里都有体现。在语言策略上，提出让学生学习使用思维导图，以加深对文章的理解和对知识的记忆。在听力训练过程中，需要学生运用反义词、信息综合判断等，训练捕捉信息、处理信息的能力。在阅读训练中，需要学生学习和掌握如何利用思维导图帮助理清、记忆阅读语篇中的相关信息，把获取的信息转换成图形来帮助记忆。积极运用阅读策略有助于学生更好地掌握文章要点和细节等信息，降低语篇的学习难度，也有助于培养学生主动学习的习惯。
单元目标
1.理解、掌握和运用与发明和发明史相关的生词和短语,理解、掌握和运用一般过去时被动语态的结构。
2.能够运用被动语态描述发明及发明史。对发明和发明史的学习使学生产生热爱发明的感情。
3.通过了解中美发明及发明史，更好地理解人类发明文化中的瑰宝。
4.通过对比分析,掌握一般现在时和一般过去时被动语态，用思维导图的方式进行阅读，提高阅读理解的有效性。
5.教师在课堂教学中要关注学生的创新意识、创新思维、创新能力。要培养学生质疑问难;要提倡和引导学生求异思维，要鼓励学生能用不同的语言表述同一个事物;要激励学生敢于标新立异,即使学生的创见是错误的也值得欢迎。
6.教师在课堂教学中要创设民主、平等、和谐愉悦的教学氛围。课堂上要让学生多发言，无论学生的种族、地域、性别、贫富，都要一视同仁，更要关注心理上、经济上、学习上的弱势群体。要因势利导，培养和塑造学生的道德规范和完整人格。
教法导航
1. 以任务型教学作为课堂教学理念、利用整体语言教学法、情景教学法、交际教学法等。
2. 在教学中创设切实可行的任务型教学活动、突出交际性。
3. 教师为主导、学生为主体、任务为基础，注重实用性。
4. 引趣激趣策略，创设情景调节气氛，引发激发学生兴趣。
学法导航
多读善思，小组合作、探究、学习、交流
课时分配
Period 1: Section A (1a-2d)
Period 2: Section A (3a-3c)
Period 3: Section A (Grammar Focus-4c)
Period 4: Section B (1a-1e)
Period 5: Section B (2a-2e)
Period 6: Section B (3a-Self Check)
课时教案
Period 1 Section A( 1a—2d)
授课时间________实有人数_______缺席人数______缺席原因______
【课时目标】
重点单词：heel, scoop, electricity, style, project, pleasure, zipper, daily, website, pioneer,
list, mention
重点短语：with pleasure, such a great invention, in our daily lives, have a point
掌握以下句型：
（1）—When was the telephone invented
—I think it was invented in 1876.
（2）—What are they used for
—They are used for seeing at night.
4.能谈论物品被发明的时间、发明者，表达某发明的用途。
5.了解一些近现代发明的时间及用途，激发自己热爱发明的情感。培养想象力，善于观察事物。面对难题，用积极的态度去解决，发挥想象力，认识世界，改造世界。
【教学重难点】
1.本课时的单词、词组和句型，学习运用一般过去时态的被动语态。
2.学会询问发明时间及用途的基本句型：
—When was the telephone invented
—I think it was invented in 1876.
—What are they used for
—They are used for seeing at night.
运用一般过去时态的被动语态来讨论发明的发明时间及用途。
【教学过程】
Step 1 Warming up
T: Do you know what these inventions are
S1: It’s a car.
S2: It’s a telephone.
S3: It’s a television.
T: Do you know who these inventors are
S1: Karl Benz
S2: Alexander Bell
S3: J. L. Baird
Let Ss match the inventions and the inventors.
Step 2 Presentation
T: Karl Benz invented the first car in 1885.
The first car was invented (by Karl Benz) in 1885.
Step 3 Talking
1. Look at the pictures in 1a. Discuss with your group, in what order do you think they were invented Try to number them [1-4].
2. Ss discuss with their partners and number the pictures.
3. Talking about the inventions:
A: I think the TV was invented before the car.
B: Well, I think the TV was invented after the TV.
Step 4 Listening (1b)
1. T: Tell Ss look at the pictures and years on the left.
2. Play the recording for the Ss to listen.
3. Ss listen to the conversation and try to match the invention with the proper year.
4. Play the recording again.
5. Check the answers.
Step 5 Pair work (1c)
1. Ss try to remember the invention and the year.
2. Student B, cover the dates. Student A, ask Student B when the things in the picture in 1b were invented. Then change roles and practice again.
3. Let some pairs ask and answer in pairs.
e.g. A: When was the telephone invented
B: I think it was invented in 1876.
Work on 2a.
T: Tell Ss they will hear some interesting inventions.
1. Look at the pictures in 2a. Discuss the things what they are used for.
2. Play the recording for the Ss to listen and number the pictures.
3. Play the recording again to check the answers.
Work on 2b.
1. Let Ss read the chart below. Explain some main sentences for the Ss. Make sure they know what to do.
2. Play the recording for the Ss to fill in the blanks.
3. Play the recording again to check the answers.
4. Listen again and fill in the blanks.
Step 6 Pair work (2c)
Tell Ss to make conversations using the information in 2b. Make a model for the Ss.
A: What are the shoes with special heels used for
B: They are used for changing the style of the shoes.
Step 7 Listening.
Listen to 2d and answer some questions.
1.What are Paul and Roy talking about
________________________________________________________________　
2.When was the zipper invented
________________________________________________________________
3.When did the zipper become popular
________________________________________________________________
Step 8 Language points
1. Explain the usage of invent, pleasure, mention...
2. Explain the other usages of be used for, do seem, have a point...
3. Read the words and phrases.
Step 9 Exercises
1.Show some exercise to practice the key words, the target language and key sentences.
2. Check the answers one by one.
Step 10 Homework
1.Listen to 1b and 2b.
2.Make a conversation about some inventions.
【拓展延伸】
【板书设计】
Period 2 Section A (3a—3c)
授课时间________实有人数_______缺席人数______缺席原因______
【课时目标】
1.重点单词：low, somebody, translate, lock, earthquake, sudden, all of a sudden, biscuit, cookie, instrument
2.重点短语：by accident , some time, during the 6th and the 7th centuries, take place, without
3.重点句型：
(1) It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink.
(2) The book describes how tea plants were grown and used to make tea.
(3)It also discussed where the finest tea leaves were produced and what kinds of water were used.
(4)It is believed that tea was brought to Korea and Japan during the 6th and 7th centuries.
4.进行一步复习巩固学习Section A 部分所学的生词和词组。
5.进一步学习运用一般过去时态的被动语态。
6.掌握主动语态变被动语态的方法，并通过不同方式的练习，来熟练运用。
【教学重难点】
1.复习巩固Section A 部分所学的生词和词组，达到熟练运用的目标。
2.一般过去时态的句子变为被动语态。
【教学过程】
Step 1 lead in.
1. Make Ss review the phrases they learned last class.
2. Show some pictures for Ss to look and say something about tea.
3. Lead in 3a.
Step 2 Pre-reading
Fast reading
Ask Ss to have a discussion about tea.
Would you like to drink tea
How many kinds of tea do you know
What kind of tea do you like best
2.Show some pictures for Ss to look and know something about the kinds of tea.
3.Work on 3a. Ask Ss to read the passage quickly and match each paragraph with its main idea.
4.Check answers in class.
Step 3 While-reading
Careful reading.
Make Ss read the passage carefully, and complete the following tasks:
Read Paragraph 1 and answer the questions.
How was tea invented
________________________________________________________________
Who invented tea ________________________________________________
How long has tea been a kind of drinks _______________________________
When was it invented _____________________________________________
What is tea used for ______________________________________________
Read Paragraph 2 and learn something about LuYu and Cha Jing.
Read Paragraph 3 carefully and try to retell the story.
The invention of Tea
It was said that tea was ________________ by Shennong. Once, when he was boiling drinking water __________________ an open fire, some _______________ fell into the water, and they ________________ there for some time. Shennong _______________ that it produced a ______________ taste, so he decided to taste it.It was _____________delicious. In this _____________, tea was invented. And it wasn’t ______________ to the Western world until 1610, but it was ______________ over 3,000 years ago.
Step 4 Post- reading
1. Ask Ss read the passage again and retell the story according to the mind map.
2. Work on 3b. Read the passage again and answer the questions.
3. Work on 3c. Complete the sentences with the correct forms of the verbs in the box. Check answers.
4. Read a passage about brilliant inventions made by accident.
Step 5 Language points
Explain the language points and ask Ss to read them. Point out the usages of the following:
by accident, it is said/believed that, the first to do, fall into, remain, take place, without doubt.
Step 6 Exercises
Practice the language points by these exercises.
Step 7 Homework
1.Read 3a.
2.Remember the phrases of 3a.
【拓展延伸】

【板书设计】
Period 3 Section A (Grammar Focus –4c)
授课时间________实有人数_______缺席人数______缺席原因______
【课时目标】
重点单词: fridge, low, somebody, translate, lock, ring, earthquake, sudden, bell, biscuit, cookie, musical, instrument
2.重点短语: by accident, take place, fall into, less than, without doubt, all of a sudden
3.重点句型：
（1）When was the zipper invented
（2）Who was it invented by
（3）When was tea brought to Korea
（4）What is the hot ice-cream scoop used for
4. 通过了解中美发明及发明史，更好地理解人类文明文化中的瑰宝。
【教学重难点】
总结和应用一般过去时的被动语态。
【教学过程】
Step 1 Lead-in
1.Review the passive voice and analysis it.
2.Change the sentences into different patterns.
Step 2 Presentation
1. Ask Ss to read the sentences in Grammar Focus.
2. Show the structure of the passive voice of the past tense.
3. Explain Grammar Focus and try to make Ss understand the passive voice of the past tense.
4. Make Ss match the questions with the answers.
5. Explain the ways to change the active voice into the passive voice.
Step 3 Practice
Work on 4a,4b.
1. Ask Ss to read the sentences in 4a, then rewrite them using the passive voice. Check answers in class and make Ss read the sentences.
2. Make Ss read the words in the box first and complete the sentences with the correct forms of the verbs. Check answers in class and make Ss read the sentences.
Step 4 Pair work
Work on 4c.
1. Ask Ss to read the passage first then fill in blanks.
Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.
2. Check answers in class then make Ss read the passage.
3. Ask Ss to read the sentences and pay attention to the underlined parts.
When was the car invented
It was invented in 1885.
Who were they invented by
They were invented by Julie Thompson.
What are they used for
They are used for seeing in the dark.
4. Work in pairs. Make Ss look at the pictures and make conversations about them. Then call some pairs to present in class.
Step 5 Language points
Explain the usage of all of a sudden and luckily.
Step 6 Exercises
Show some exercises for Ss to practice the key words, the target language and key sentences.
【拓展延伸】
【板书设计】
Period 4 Section B (1a-1e)
授课时间________实有人数_______缺席人数______缺席原因______
【课时目标】
1.重点单词：crispy, salty, sour, customer
2.重点短语: by mistake, in the end, put...on...
3.重点句型：
（1）Potato chips were invented by mistake.
（2）They were invented in 1863.
（3）Potato chips were invented by a cook called George Crum.
4.进行听力训练，提高综合听说能力。
【教学重难点】
1.掌握本课时出现的生词及用法。
2.能听懂谈论发明物的对话和短文。
【教学过程】
Step 1 Warming up
1. Let Ss watch an interesting picture.
2. Ask some questions about them.
（1）--What did they eat
--S1: Ice cream.
（2）--What did the big dog think of the ice-cream
--S2: Sweet, cool, and delicious!
Well let’s look at some other delicious food, please.
Step 2 Presentation
Work on 1a.
1. Tell Ss that the words in the box describe how food can taste. Write them under the correct pictures. Some pictures have more than one word.
2. Ss work with their partners and try to write some proper words under the pictures.
3. Let some Ss read their answers. Try to remember the new words.
Work on 1b.
1. Let some Ss read the adjective words in the box. Make sure they all know the meaning of each word.
2. Ss discuss with their partners. Try to write the name of a different food after each word.
Learn the new words together:
Step 3 Listening
Work on 1c,1d.
1. Make Ss read the sentences in 1c. Try to predict what we are going to hear.
2. Play the tape for the first time for Ss listen and try to get the rough meaning.
3. Play the tape for the second time and Ss circle T or F.
4. Play the tape once again.Check their answers.
5. Make Ss listen again and complete the sentences.
6. Check answers and make Ss read the short passage.Step 5. Role-play and practice
Step4 Role-play and practice.
Work on 1e.
1. Ask Ss to work in pairs to make a conversation about the invention of potato chips. Use the information in 1c and 1d.
A:Did you know potato chips were invented by mistake
B: Wow, I didn’t know that. Who invented them
A:...
2. Work in pairs. Have a discussion about the foods.
Do you know what they are
How were they invented
3. Show a passage about sandwich for Ss to read.e class.
Step 5 Language points
1. Explain the usage of by mistake, enough, in the end.
2. Ask Ss to read them.
Step 6 Exercises
Show some exercises to practice the key words ,the target language and the key sentences.
Step 7 Homework
Make conversations with other students talking about how potato chips were invented after
class.
2.Write a conversation to talk about something else.
【拓展延伸】
【板书设计】
Period 5 Section B ( 2a-2d)
授课时间________实有人数_______缺席人数______缺席原因______
【课时目标】
1.重点单词：the Olympics, Canadian, divide, basket, hero...
2.重点词组：divide...into, not only ...but also, stop...from doing..., look up to, at the same time, encourage sb. to do.
3.重点句式：
(1) Basketball is a much-loved and active sport that is enjoyed by many for fun and exercise.
(2) Basketball was invented by a Canadian doctor named James Naismith, who was born in 1861.
(3) When he was a college teacher,he was asked to think of a game that could be played in the winter.
(4) Basketball has not only become a popular sport to play, but it has also become a popular sport to watch.
4. 掌握好的阅读方法，提高阅读技能。
5. 了解世界上一些对人类有着重大意义的发明的相关信息，开阔学生的眼界，养成勤于思考，善于发现的好习惯，培养学生的创造精神。
【教学重难点】
1.掌握本单元所学的词汇、句型及语法知识，并能进行综合练习运用。
2.培养听说和阅读理解的能力。
3.用英语介绍某一发明的简要过程
【教学过程】
Step 1 Warming up
Ask Ss some questions about basketball. Do you like sports What is your favorite sport Why do you like it How much do you know about this sport
Step 2 Pre-reading
1.Show some knowledge about basketball to Ss to learn.
2. Make Ss discuss the sport with their partners and then share their ideas with the class.
3. Ask Ss to read the passage about the history of basketball and match the main ideas with each paragraph.
4. Check answers in class.
Step3 While-reading
Make Ss read the passage carefully and complete the following tasks.
1. Who invented basketball and how is it played
2. When was the first basketball game in history played
3. Why were the Berlin Olympics important for basketball
4. What are the professional basketball groups in America and China
5. How popular is basketball
Step4 Post-reading
1. Ask Ss to read the passage again and complete the mind map with the information in the passage.
2. Make Ss retell the passage using the information in the mind map.
3. Ask Ss to use the mind map to summarize what they remember about the development of basketball.
4. Make Ss have a discussion about basketball players.
Do you want to be a famous basketball player
What do you think of famous basketball players
Step5 Practice
Ask Ss to make a list of good and difficult things about being a famous basketball player. Encourage Ss to express their opinions.
Step6 Language points
1. Explain the usage of stop sb. from doing sth., look up to,popularity, rise, dream, encourage...
2. Ask Ss to read the language points so that they can understand them deeply.
Step 7 Exercises
Show some exercises for Ss to practice the language points.
Step 8 Homework
1. Read 2b and write down the phrases.
2. Retell the history, development and popularity about basketball.
【拓展延伸】
【板书设计】
Period 6 Section B (3a-self check)
授课时间________实有人数_______缺席人数______缺席原因______
【课时目标】
1. Key vocabulary:
professional, nearly, take notes, come up with, lead to...
2. Key sentences:
（1）This is because sometimes a few people may invent things which are nearly the same.
（2）It’s hard to tell who came up with the idea first.
（3）So some people doubt whether the inventor came up with the idea himself or herself.
3. Structure:
be+past participle
4.Summarize the passive voice of the past tense.
5.Think about your problem and think of the new invention to solve your problem.
6.Write a passage to describe your invention.
【教学重难点】
Write a passage about an invention.
【教学过程】
Step 1 Review
1.Guide Ss to review the the passive voice of the past tense.
2. Make Ss read and remember them.
Step 2 Lead-in
Show some pictures about inventions in our life for Ss to look.
Encourage Ss to think of more inventions and try to talk about them.
Step 3 Presentation
Work on 3a.
Ask Ss to read the the instructions in 3a and then think of something that they do not like to do.Then think of an invention that could help them. Make notes.
Make Ss discuss their inventions with partners.
Step 4 Writing
Work on 3b.
1.Ask Ss read the instruction of 3b.
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
2. Remind Ss to use the given structure to write a passage. Pay attention to the passive voice.
This special pen was invented by Liu Jie.
It has three colors and is used for…
3. Choose one of the good passages and show it to other Ss.
4. Underline the good sentences and correct the errors.
5.Show Ss some more pictures of inventions to look and ask them to write another passage about Smart and creative inventions.
Step 5 Self Check
Work on 1.
Ask Ss to read and review the words in the box.
Fill in the blanks on their own.
In pairs, correct the work of each other.
Read aloud the passage.
Work on 2.
1. Ask Ss to say how to write a passive voice sentence simply.
2. Ask some Ss to write the sentences on the blackboard.Other Ss rewrite the sentences on their own.
3. The class look at the blackboard and check.
4. Read and translate them into Chinese.
Work on 3.
1.Make Ss read the instructions and understand how to work.
2.Guide Ss to think back of the inventions in this unit.Quickly and simply describe them.
3.Ask Ss to choose one invention to finish the writing.
Step 6 Exercises
Practice the language points and grammar by doing these exercises.
Step7 Homework
1.Write an article about your favourite invention.
2.Do some exercises about passive voice.
3.Preview the new words in the next unit.
【板书设计】
【教学反思】
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