Unit 6 When was it invented?单元教案（共5课时） 人教版九年级英语全册

Unit 6 When was it invented
单元分析
单元语法 一般过去时的被动语态
写作话题 发明(Inventions)
Section A
单词概览 名词：heel; scoop; electricity; style; project; pleasure; zipper; website; pioneer; ruler; saint; popularity; fridge; earthquake; bell; biscuit; cookie; instrument 动词：mention; boil; remain; translate; ring 形容词：daily; accidental; national; low; sudden; musical 兼类词：list; smell; trade; doubt; somebody; lock
短语归纳 动词短语：have a point; take place; run on electricity; seem to do sth.; fall into; drop into; spread...to...; know about; steal sth. from sp.; advise sb. not to do; translate...into; break the rule; start doing; work on 名词短语：the nature of 介词短语：by accident; without doubt; with pleasure; in our daily lives; in the 19th century; at a low price 其他：all of a sudden; less than; around the world; even though
句型再现 --When was the phone invented --I think it was invented in 1876. --Who was it invented by --It was invented by Whitcomb Judson. --When was tea bought to Korea --It was bought to Korea during the 6th and 7th centuries. --What is the hot ice-cream scoop used for --It’s used for serving really cold ice-cream. Is it really such a great invention Think about how often it’s used in our daily lives. Well, you do seem to have a point... It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink. It is believed that tea was brought to Korea and Japan during the 6th and 7th centuries. Even though many people now know about tea culture, the Chinese are without doubt the ones who best understand the nature of tea.
Section B
单词概览 名词：basket; hero 动词：divide 形容词：professional 副词：nearly 兼类词：Canadian
短语归纳 动词短语：divide...into; look up to; teach sb. to do sth.; work together; stop...from doing sth.; dream of; see...doing sth.; encourage sb. to do sth.; work hard; achieve one’s dream; take notes; decide on; come up with; lead to; use...to do sth.; give information about 名词短语：the popularity of; the number of 介词短语：in the end; for a long time; at the Olympics; on a hard floor; on the same team; at the same time 其他：not only...but also...; thin enough;
句型再现 Did you know potato chips were invented by mistake The customer thought the potatoes were not thin enough. Basketball was invented by a Canadian doctor named James Naismith, who was born in 1861. When he was a college teacher, he was asked to think of a game that could be played in the winter. Dr. Naismith divided the men in his class into two teams and taught them to play his new game. Today, the popularity of basketball has risen around the world, with many young people dreaming of becoming famous players. Basketball has not only become a popular sport to play, but it has also become a popular sport to watch. The number of foreign players, including Chinese players, in the NBA has increased. Many young people look up to these basketball heroes and want to become like them. These stars encourage young people to work hard to achieve their dreams.
文化视窗
The History of Roller Coaster
Have you ever been on a roller coaster If you have, you must have screamed when the roller coaster was running at the fastest speed. What an exciting way to have fun!
People have enjoyed the excitement of roller coasters for hundreds of years. Roller coaster rides began in Russia. Over 300 years ago, Russians made slides(滑梯) out of wood and ice for winter festivals. They just needed to keep watering wooden ramps(坡道) and the ramps would become giant and smooth ice slides. Then they carved(雕刻) ice seats to make sleds(雪橇) that could be used on slides. In the end, they climbed up a set of stairs at the back of the slides. This is the prototype(雏形) of roller coasters.
Gradually, people wanted to enjoy sliding all year round. In 1817, a company in Paris began to develop a facility(设备) that could lock cars on the track. The first roller coaster officially came out.
The Switchback Railway was built at Coney Island, New York, in 1884. To ride it, people had to climb a tower. At the top of the tower, they would get into a small train which took them down a 200 meter slope(斜坡). At the bottom, people got out and the driver took the train back up to the top. It wasn’t much of an exciting ride because its top speed was only 10 kilometers per hour.
Today, roller coasters come in all shapes and sizes. One of the fastest is the Top Thrill Dragster in Cedar Point, Ohio. It can reach speeds of 190 kilometers per hour. But it may not be the fastest after a while because there will always be faster and more exciting roller coasters coming out.
Section A
备课素材
素材一 新课导入设计
Sample 1 竞答导入
教师呈现与发明相关的问题，学生举手抢答，激发学生学习兴趣，从而导入新课。
T: There are many useful things in our world. Do you know who it was invented by Let’s have a quiz to see how much you know about the famous inventors and inventions.
Q1: Who is the inventor of the computer A. Charles Babbage B. Karl Benz
Q2: Who was the telephone invented by A. Thomas Edison B. Alexander Graham Bell
Q3: Who was the car invented by A. Galileo Galilei B. Karl Benz
Q4: Who was the television invented by A. Philo Farnsworth B. Francis Beaufort
Sample 2 图片导入
教师在PPT上呈现一张有电脑、手机、电话等的图片，通过问答导入新课。
T: What is the most important thing in this room to you
S: I think the computer/phone...is the most important.
T: Can you imagine the life without these things These inventions has changed our life a lot. Do you know who invented them
Sample 3 视频导入
教师播放茶叶从采摘到饮用的过程介绍的视频，并设置问题：
T: What can we learn from the video Do you want to know more about Chinese tea
Sample 4 Rap改编导入
教师呈现Rap歌词，并且给学生演示一遍，学生可以自由发挥表演歌曲。
素材二 课堂活动设计
活动一　Pair work（两两一组，表演对话）
教师引导学生理解1c的要求，并给1-2分钟准备时间熟悉物品发明的日期。
学生B盖住1b中出现的日期，学生A问学生B图片中的物品何时被发明。
邀请2-3对学生当堂演示对话。
活动二 Role-play（角色扮演，完成2d任务）
教师帮助学生理解2d题目要求。
同桌之间一人扮演Paul另一人扮演Roy，合作完成2d对话。
每对同桌再与前、后桌组成四人小组，互相表演对话。
教师巡视，找出比较好的小组为全班做表演。
素材三 课文脉络梳理
【答案】1. boiling drinking water 2. fell into 3. remained 4. produced 5. tasted 6. was invented 7. mentioned 8. were grown 9. were produced 10. spread 11. 1660 12. without doubt 13. the nature of tea
素材四 知识探究
探究点1 动词invent, discover和find的区别
【观察】
It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink. 据说，一个叫神农的统治者是第一个发现茶饮品的。
One of the world’s favorite drinks was invented. 世界上最受欢迎的饮料之一被发明出来了。
【发现】
invent意为“发明”，指通过劳动运用聪明才智“发明；创造”出以前从未存在过的新事物。
discover意为“发现”，表示“偶然”或“经过努力”发现客观存在的事物、真理或错误，即指发现原来客观存在但不为人知的事物，也可表示发现已为人知的事物的新的性质或用途。
find意为“找到；发现”，指找到或发现自己所需要的东西或丢失的东西，着重指找到的结果。
【应用】
用invent, discover和find的适当形式填空。
He finally ________ a way to solve the problem.
He ________ a new teaching method.
Columbus ________ America in 1492.
【答案】1. found 2. invented 3. discovered
探究点2 happen和take place的辨析
【观察】
What happened 发生了什么？
The tea trade from China to Western countries took place in the 19th century. 从中国到西方国家的茶叶贸易在十九世纪就开始了。
【发现】
它们都可以表示“发生”，都没有被动语态，但是在用法上有区别。
happen常指具体事件的发生，特别指偶然的或未能预见的事情。
take place通常指事先安排或有准备的事情或活动发生。
【应用】
完成句子。
一场风暴发生在另外一个国家。
A storm ________ in another country.
在过去的十年，我们的家乡已经发生了巨大的变化。
Great changes have ________ ________ in our hometown in the past ten years.
【答案】1. happened 2. taken place
课堂设计案例
第一课时Section A 1a-2d
【教学目标】
掌握本课时的重点词汇及句型。
能够用一般过去时的被动语态描述和询问发明史。
能够分析和归纳一般现在时、一般过去时和一般过去时的被动语态，并结合实际生活情境理解和运用。
能够用对比分析的方法掌握一般现在时的被动语态。
【教学重难点】
一般过去时的被动语态。
一般现在时、一般过去时和一般过去时被动语态的区别。
【教学过程】
预习感知
一、方法指导
1. 预习Page 41-42上的生词，根据音标能读出这些词，并掌握其词性及汉语意思。
2. 朗读1a-2d中的句子和对话,能英汉互译。
二、预习检测
根据句意及汉语提示完成句子。
I like the color of this dress but I don’t like its ________(款式).
My mother always ________(列清单) all things that she wants to buy before shopping.
It’s my great _________(高兴) to have a talk with you.
Henry introduced a nice ________(网站) to me to learn English.
Many agree that we can’t live without phones in our ________(日常的) lives.
【答案】1. style 2. lists 3. pleasure 4. website 5. daily
课堂教学
Step 1 Leading in
Show a picture of a room. There is a computer, a phone, a TV and a picture of a car in the room.
T: What is the most important thing in this room to you
S: I think the computer/phone...is the most important.
T: Can you imagine the life without these things These inventions has changed our life a lot. Do you know who invented them
Step 2 Presentation
1.Teach Activity 1a.
(1) Call students’ attention to the four pictures and let students tell what they are. Then write the name of each invention on the blackboard.
(2) Read the instruction to the class. Invite a pair of students to read the sample conversation, and have students work in pairs to guess the invented order.
2.Teach Activity 1b.
(1) Call students’ attention to the four inventions in the picture and four dates in the box.
(2) Ask students to listen carefully and match the inventions with the dates.
(3) Write the correct letter in front of each date as the sample given.
3.Teach Activity 1c.
(1) Invite a pair of students to demonstrate the sample conversation, and then read the instruction to the class.
(2) Have students work in pairs to practice the conversations like the sample. Ask students to pay much attention to the dates of inventions.
(3) After students finish this activity, ask some pairs to act out their conversations to the class.
Step 3 Practice
1.Teach Activity 2a&2b
(1) Read the instruction of 2a and 2b to the class.
(2) Play the tape for the first time, students listen and number the order according to the points they hear.
(3) Play the tape for the second time, students listen carefully and complete the chart.
(3) Student listen again and check the answers.
2.Teach Activity 2c.
(1) Invite a pair of students to read the sample conversation, and read the instruction to the class. (2) Get students to make their own conversations using the information in 2b.
Step 4 Consolidation
Teach Activity 2d
Ask students to read the conversation silently to get the main idea.
Lead students to read it sentence by sentence, explain some language points at the same time.
invite several pairs to perform for the whole class.
Step 5 Do class quiz
Ⅰ.用括号内所给单词的适当形式填空。
What do you think of these _________(invent)
This kind of glass is used for _________(drink) water.
This bicycle was _________(invent) by a middle school student.
What is the most _________(use) invention in the world
Ⅱ.完成句子。
Edison i________ many useful i________ in his life. The light ________(invent) by him.
These books are used only ________ teachers. (for/by/as/to)
My father is quite used to ________(drive) in such busy streets like this.
邮票被用来寄信。
Stamps ________ ________ ________ ________ letters.
The League was founded in 1922.（对画线部分提问）
________ ________ the League ________
His aunt bought him a bike.（变为被动语态）
A bike ________ ________ ________ him by his aunt.
【答案】1. inventions 2. drinking 3. invented 4. useful 5. invented; inventions; was invented 6. by 7. driving 8. are used for sending 9. When was; founded 10. was bought for
Step 6 Homework
Practice reading the conversation in activity 2d.
Complete the students’ book of the 1st exercise.
第二课时Section A 3a-3c
【教学目标】
掌握本课时的重点词汇及句型。
能够阅读并理解关于发明史的短文。
能够在短文中找到并运用一般过去时的被动语态。
【教学重难点】
学会区分主动语态和被动语态。
培养想象力及观察事物的能力。
【教学过程】
预习感知
一、方法指导
1. 预习Page 43上的生词，根据音标能读出这些词，并掌握其词性及汉语意思。
2. 朗读3a中的文章，找出重点句子。
二、预习检测
根据括号中的汉语提示完成句子。
1. I found the key __________ (偶然) when I was cleaning the house.
2. The May 4 Movement ___________（发生）in Beijing in 1919.
3. He’ll succeed ____________ (毫无疑问) this time.
4. ____________ (据说) Shen Nong was the first to discover tea as a drink.
5. Tea _________________(被带到) Korea and Japan during 6th and 7th centuries.
【答案】by accident 2. took place 3. without doubt 4. It’s said that 5. was brought to
课堂教学
Step 1 Leading in
Enjoy a video and think about these four questions:
1.What are the four great inventions of China
2.When was it invented
3.Who was it invented by
4.What is it used for
Step 2 Presentation
Play the video "Tea Culture", let students understand the Chinese tea culture and the origin of the invention of tea, and understand its development process.
Free talk:
1. What are the types of tea
2. What are the effects of tea
Students try to answer the questions: green tea, black tea... Tea can make your mind clear...
Step 3 Pre-reading
Predict: What’s the passage mainly about
Tell students to find useful information from the title and the picture.
Step 4 While-Reading
1. Help the students understand the demand in 3a and finish the task. Then check the answers together.
2. Make the students read the passage carefully and answer the questions in 3b, then check the answers.
3. Ask the students to work on 3c. Look through the words and sentences with the students, and then let them write down their answers. When they finish, ask some students to read the whole sentences one by one.
Step 5 Post-reading
Did you know that tea was invented 1. by accident(偶然) 2. It is said that(据说) a Chinese ruler called Shen Nong was the first to discover tea as a drink. One day when he was boiling drinking water over an open fire, some leaves from a tea plant 3. fell/dropped into(落入) the water and remained there for some time. It produced a nice smell, so one of the world’s favorite drinks was invented.
A few thousand years later, Lu Yu, “the sage of tea”, 4. mentioned Shen Nong in his book Cha Jing. The book not only describes how tea plants were grown and used to make tea but also discusses where the finest tea leaves were produced and what kinds of water were used.
5. It’s believed that(人们认为) tea was brought to Korea and Japan during the 6th and 7th centuries. The tea trade from China to Western countries 6. took place(出现) in the 19th century. This helped to spread the 7. popularity of tea and the tea plant to more places around the world. But 8. without doubt(毫无疑问), the Chinese are the ones who understand the nature of tea best.
Step 6 Do class quiz
单项填空
When Tim 　　　 why he was late for school,he just kept silent.
A.was asked B.asked C.was asking D.is asked
2. You have to stay behind if your homework 　　　 before five o’clock.
A.isn’t done B.won’t be done C.doesn’t do D.wasn’t done
3. A report　　　 us on how to deal with our problems last Monday.
A.is given B.was giving C.was given to D.was given
4.—Tell me one thing you’re proud of your junior high school,Tony.
—I　　　 as captain of the school football team.
A.choose B.chose C.am chosen D.was chosen
5. —Was table tennis invented by the Chinese
—No. It　　　 in China until the start of the 20th century.
A.played B.was played C.didn’t play D.wasn’t played
【答案】AACDD
Step 7 Homework
After school, surf the Internet and get some information about the inventions in foreign countries.
Complete the students’ book of the 2nd exercise.
第三课时Section A Grammar Focus-4c
【教学目标】
掌握本课时的重点词汇及句型。
总结和应用一般过去时的被动语态。
【教学重难点】
复习巩固Section A部分所学的生词和短语，达到熟练运用的目标。
掌握主动语态变被动语态的方法，并通过不同方式的练习，熟练运用。
【教学过程】
预习感知
一、方法指导
1. 预习Page 44上的生词，根据音标能读出这些词，并掌握其词性及汉语意思。
2. 朗读和翻译Grammar Focus中的句子，画出重点短语和句型。
二、预习检测
根据句意及汉语提示完成句子。
If you can’t eat all these fruit, you may put some into your ________(冰箱).
The police found the lost cat under the destroyed house through an ________(仪器).
The boy lost his parents during the last year’s ________(地震).
I only have some ________(饼干) and a glass of milk every morning.
The students were asked to ________(翻译) the story into English.
【答案】1. fridge 2. instrument 3. earthquake 4. biscuits 5. translate
课堂教学
Step 1 Leading in
Teacher shows the Time magazine with theme of “the best inventions of 2022 change how we live” to lead in the topic- inventions.
Step 2 Presentation
Show the students sentences with active voice and passive voice, ask them to find out the differences between them.
Use the sentences “Whitcomb Judson invented the zipper in 1893.” and “The zipper was invented by Whitcomb in 1893.” as an example, ask students to pay attention to the position change of each sentence component.
Ask students to read the sentences in the Grammar Focus box and observe these sentences about the inventions carefully and find some similarities and differences of the sentences.
Explain the usage of passive to the students.
Step 3 Practice(4a, 4b&4c)
Ask students to rewrite the sentences in 4a using the passive voice.
Ask students to complete the sentences in 4b with the correct forms of the verbs in the box.
Ask students to read the short passage in 4c and decide whether active or passive forms should be used in the sentences.
Check the answers with the whole class.
Step 4 Do class quiz
Ⅰ.单项填空。
“I’m still working because I’m still capable and hope to guide more young people,” said Wu Mengchao when he _____.
is interviewed B. is interviewing C. was interviewed D. interviewed
--Did you notice the students ____ a few why questions in Mr. Zhang’s class
--Yes, I think he wanted to train their abilities of deep thinking.
are asked B. must be asked C. have been asked D. were asked
--Perfect photos!
--Thank you. They ____ by my mother with her mobile phone.
took B. were taken C. were taking D. will be taken
These gifts ____ by children in their last summer holidays.
made B. were made C. make D. are made
As we all know, the World Wide Web _____ after the Internet.
invents B. invented C. was invented D. is invented
Ⅱ.把下列句子变成被动语态。
All people laughed at him.
They make the bikes in the factory.
We visited the museum last Sunday.
We can repair this watch in two days.
My father gave me a new book on my birthday.
【答案】1-5 CDBBC 6. He was laughed at by all people.
The bikes are made by them in the factory.
The museum was visited (by us) last Sunday.
This watch can be repaired (by us) in two days.
A new watch was given by my father on my birthday.
Step 5 Homework
Preview Section B 1a-1e.
Complete the students’ book of the 3rd exercise.
Section B
备课素材
素材一 新课导入设计
Sample 1 图片导入
教师在PPT上展示Michael Jordan, Kobe Bryant, LeBron James, Yao Ming, Yi Jianlian的图片，并让学生猜测这些人物是谁，从而导入2b课文。
Sample 2 视频导入
教师播放NBA球赛片段或科比高光片段，并提出问题：
What are they playing in the video
What do you know about basketball
Do you know how it was invented
Sample 3 情境导入
教师带一些水果和小吃让学生品尝并给出评价从而导入1a。
T: Today I bring some delicious snacks and fruit here. Who would like to have a try And you need to describe how they taste after tasting them.
Call some students to taste them and ask.
T: How does it taste
S: It’s sweet/hot/ crispy/ sour/salty/bitter.
T: Yes, It’s sweet/hot/ crispy/ sour/salty/bitter. Great, thank you.
素材二 课堂活动设计
活动一　Pair work（两两一组，表演1e对话）
教师引导学生理解1e的要求。
每两人为一组，表演1e中的对话。
邀请2-3对学生当堂演示对话。
活动二 Class debate（2e）
教师把全班分为两组，抽签决定谁为辩论的正反方，正方辩题为：It is good to be a famous basketball player. 反方辩题为：It is difficult to be a famous basketball player.
教师引导学生理解辩论赛的规则，并给出5分钟组内讨论时间。
双方依次发表观点，教师最后做出评价。
活动三 Who sells best
教师提前把全班学生的名字写在小纸条上折起来。
抽签选取6位同学扮演“推销商”上台向同学们“推销”自己的发明
教师给出推销用语的提示：
What is the invention
Who invented it
When was it invented
What is it used for
台下的每位同学都有一票选择权，得票最多的“推销商”获胜。
素材三 课文脉络梳理
【答案】1. over 100 years ago 2. December 21, 1891 3. at the Olympics 4. more than 5. Canadian 6. a game 7. in the winter 8. on a hard floor 9. the other team’s peting team 11. has increased 12. foreign players 13. even factories 14. play and watch 15. becoming famous players 16. look up to
素材四 知识探究
探究点 stop...(from) doing sth.的用法
【观察】
At the same time, they need to stop the competing team from getting the ball into their own basket. 同时，他们需要阻止对方的球进自己的篮。
What stopped you coming to the party 什么事阻止你来参加晚会？
【发现】
“stop...(from) doing sth.”意为“阻止......做某事/阻止......的发生”。相当于“keep/prevent...from doing sth.”。
【应用】
完成句子。
大雨并没有阻止他们继续工作。
The heavy rain didn’t stop them from ________(work) on.
【答案】working
课堂设计案例
第四课时Section B 1a-1e
【教学目标】
掌握本课时的重点词汇和句型。
能够通过听、说学习与食物有关的词汇。
让学生通过阅读理解如何用一般过去时的被动语态描述发明史。
【教学重难点】
能够通过听力训练， 提高学生的综合听说能力。
让学生学会运用被动语态的相关句型谈论某种美食的发明。
【教学过程】
预习感知
一、方法指导
1. 预习Page 45上的生词，根据音标能读出这些词，并掌握其词性及汉语意思。
2. 朗读1a-1c中的单词、短语和句子，中出重点短语和句子。
3. 浏览1c和1d中的句子，预测听力所涉及的话题和内容。
4. 大声朗读1e中的对话。
二、预习检测
根据句意及首字母提示完成句子。
We often put the food into the f________ to keep it fresh in summer.
For a restaurant, c________ are the most important.
I don’t like lemons because they are too s________.
The fish was too s________ because my mom put too much salt on it.
Lucy and Lily are twins. People often m________ them for each other.
【答案】1. fridge 2. customers 3. sour 4. salty 5. mistake
课堂教学
Step 1 Review（About 4 minutes）
Greet the class as usual.
Have a student report the structure of the passive voice of the past tense, and then ask them to change the sentences in Self Check 2 into passive voice.
Call different students to say their answers and check them in class.
Step 2 Warm-up（About 5 minutes）
T: Boys and girls, I know you must have talked about some inventions in Section A. Next, let’s have a brainstorm competition between boys and girls. You need to say as many English words of inventions as possible. Think it over, then stand up and say!
While the students are having a brainstorm competition, give them some encouragement and praise. And say congratulations to the winners!
Show a picture of a computer and have a free talk with a student.
T: Look! What’s this
S: It’s a telephone.
T: When was it invented
S: It was invented in 1876.
T: Who was it invented by
S: It was invented by Bell.
Then show some pictures of the inventions, have students ask and answer in pairs to talk about some inventions in front of the class.
Step 3 Presentation（About 5 minutes）
T: Today I bring some delicious snacks and fruit here. Who would like to have a try And you need to describe how they taste after tasting them.
Call some students to taste them and ask.
T: How does it taste
S: It’s sweet/hot/ crispy/sour/salty/bitter.
T: Yes, it’s sweet/hot/crispy/sour/salty/bitter. Great, thank you. (Teach the new words: crispy, sour, salty, bitter)
Have students talk about the food with their partners like this.
A: How does the lemon taste
B: It’s sour.
A: Do you like it
B: No, I don’t.
Show the pictures in 1a, ask some pairs to talk about them. Make sure they can describe how the food tastes with right adjectives.
Step 4 Practice（About 4 minutes）
Have students read the instructions in 1a and finish it individually. Remind them that some pictures may have more than one word.
Call different students to say their answers and check them with students.
Ask them to think of more food after each adjective and write them down in 1b.
Call some students to say the food they write and discuss in class.
Step 5 Listen and circle（About 6 minutes）
Lead in:
T: (Show the students some potato chips) Look! I have another delicious food. What are they
S: They are potato chips.
T: Yes, Taste one slice, please. Pass them one by one. (Ask a student) How does it taste
S: It’s crispy, salty and a little hot.
T: Yes. What shape are they
S: They are thin slices.
T: Why are they salty
S: The cook put a lot of salt on them.
T: Clever boy! Now guess how to make potato chips, please.
Have students discuss in groups and report the steps of making potato chips they guess. Then say to them.
T: In the past, potato chips weren’t like these. Do you know how potato chips were invented and who were they invented by Let’s listen to a story about the history of potato chips and choose the right answers in the chart.
Present a chart and have them listen and choose the right answers.
Who Job Where When How
Julie Thompson a cook a shop in 1853 by accident
George Crum a worker a restaurant in 1863 by mistake
Call the students’ attention to the statements in 1c and tell them that they’ll listen again and circle “T” for true or “F” for false.
Play the recording again and ask students to circle the correct answers. Check answers with students.
Step 6 Listen and complete（About 4 minutes）
T: Now we all know that the potato chips were invented by mistake. Let’s listen again, complete the sentences about the history of potato chips.
Have students look through the passage in the box of 1d and guess the missing parts.
Then play the recording the third time and ask the students to complete the sentences.
Play the recording for the fourth time and ask them check the answers by themselves.
Then call a student to read the complete sentences, the rest of the class check their answers.
Say congratulations to the students who had a good guess before listening.
Step 7 Retell the story（About 4 minutes）
Have students retell how potato chips were invented to their partners. Then call two students to retell the story in class.
Step 8 Pair work（About 5 minutes）
Present the following questions and ask students to answer them.
Who were the potato chips invented by
When and where were the potato chips invented
How were they invented
How do they taste
Have students look through the uncompleted conversation in 1e.
Then ask students to complete the conversations in pairs by using the information in 1c-1d. While they are working in pairs, move around and offer language and pronunciation support if they need.
Check the answers by calling on different pairs to role-play their conversations to the class.
Step 9 Summary（About 3 minutes）
In this class, we’ve mainly known about the history of potato chips by listening and speaking. Even though we all know that the potato chips were invented by mistake, it changed our lives. All kinds of inventions made our world more beautiful, the inventors’ wisdom made us live better. And we should do as the inventors did, never stop asking why and how.
Step 10 Do class quiz
Ⅰ.单项选择。
1. Mr. White took the train , he didn’t even know it until half an hour later.
A. by accident B. by chance C. by mistake D. by hand
2. The boy tried several times to climb the tree, and he succeeded .
A. in the past B. in the end C. in a way D. in no time
3. ---How do you like the soup
---It tastes too______. I think you put too much salt in it.
A. sweet B. sour C. salty D. crispy
4. ---Where is my pen
---Oh, sorry. I have taken by mistake.
A. yours B. your C. his D. mine
5. The chef cooked the potato slices for a long time they became crispy.
A. when B. after C. until D. if
Ⅱ.用所给词的适当形式。
6. Potato chips (invent) by a cook called George Crum.
7. The meat is so _____(salt) that nobody likes eating it.
8. Jack is the (thin) boy in his class.
9. The customer said his potatoes (cut) too thick.
10. It’s difficult for us (tell) who came up with the idea first about the invention.
【答案】1-5 CBCAC 6. were invented 7. salty 8. thinnest 9. were cut 10. to tell
Step 11 Homework
Ask students to find out information about an invention they would like to know more about.
Complete the students’ book of the 4th exercise.
第五课时Section B 2a-Self Check
【教学目标】
掌握本课时的重点词汇和句型。
能够用思维导图的方式进行阅读。通过阅读，理解如何用一般过去时的被动语态描述发明史。
能够用书面语言写新发明介绍。
【教学重难点】
学会用一般过去时的被动语态对更广泛的发明进行描述。
用书面语言写新发明介绍。
【教学过程】
预习感知
一、方法指导
1. 预习Page 46-48上的生词，根据音标能读出这些词，并掌握其词性及汉语意思。
2. 朗读2b课文，并试着翻译成汉语。
3. 预习并试做Self Check。
二、预习检测
根据提示用合适的单词填空。
1. Mary is ________ (加拿大人), but she can speak Chinese well.
2. There are some tomatoes, potatoes and eggs in that _______ (筐).
3. There are many h　　　　　 in our life.
4. He wants to be a　　　　　 (职业的) basketball player.
【答案】1. Canadian 2. basket 3. heroes 4. professional
课堂教学
Step 1 Leading in
Play a short video of basketball for the students to enjoy.
Talk about the basic equipment about basketball: basketball, basket, backboard, net, wooden floor, etc.
Step 2 Reading(2a-2e)
Pre-reading
Look at the photo and the title of the passage on page 46. Then answer the question below.
Can you guess what the passage talks about
Check the answer.
It talks about basketball, including when and maybe how basketball was invented, and maybe it will tell us the development of basketball.
Fast reading
Task 1
Scan the passage and answer the following questions.
(1) Who is the inventor of basketball
(2) When and where did basketball become an Olympic event
Check the answers one by one.
Answers:
(1) James Naismith.
(2)In 1936 in Berlin.
Task 2
Read the passage quickly. What is the main idea of each paragraph
Para. 1 Introduction to basketball
Para. 2 How basketball was invented
Para. 3 The popularity of basketball today
Careful reading
Task 1
Read and tell True or False.
(1) Basketball is very popular in China. （ ）
(2) Basketball is played by over 100 million people in China. （ ）
(3) James Naismith was born in 1861. （ ）
(4) Basketball became an Olympic event in 1936. （ ）
(5) Few young people dream of becoming famous basketball players. （ ）
Check the answers one by one.
Answers: (1)—(5) T F T T F
Task 2
Read Para. 1 and fill in the blanks.
Basketball is played by more than ___________ people in over ________ countries. The first basketball game in history was played on ________ _________. In 1936 in _______, it became an event at the Olympics.
Check the answers one by one.
Answers: 100 million; 200; December 21, 1891; Berlin
Read Para. 2 and fill in the column about the inventor of basketball.
Name James Naismith
Nationality (国籍) Canada
Job doctor
Year of birth 1861
Task 3
Complete the mind map with the information in the passage. What else can you add to the mind map
Check the answers one by one.
Answers:
Game: floor; two; the ball; basket
Development: Dr. James Naismith; December 21, 1891; Berlin; 1936; NBA; CBA
Popularity: more than 100 million; 200
Task 4
Use the mind map to summarize what you and your partner remember about the development of basketball. Use the following questions to help you.
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
Check the answers one by one.
Answers:
1. Dr. James Naismith invented basketball. There are two teams and players on the same team must work together to get the ball into the other team’s basket.
2. The first basketball game in history was played on December 21, 1891.
3. The Berlin Olympics was important because basketball became an Olympic event then.
4. The professional basketball groups are the NBA in America and the CBA in China.
5. Basketball is played by more than 100 million people in over 200 countries.
Post reading
Task 1
Find out the sentences with passive voice in the passage.
Task 2
What do you think of famous basketball players Make a list of good and difficult things about being a famous basketball player.
It’s good to be a famous basketball player because…
It’s difficult to be a famous basketball player because…
Task 3 Debate time
Divide the class into two groups.
The pro side: It’s good to be a famous basketball player.
The con side: It’s bad to be a famous basketball player.
What can you learn from this activity
There are always two sides to every coin.
That a person is famous does not mean that everything goes well for him/her all the time.
Step 3 Writing(3a, 3b)
Work on 3a.
Think of something that you do not like to do. Then think of an invention that could help you. Make notes.
Problem quickly taking notes in class getting up late doing homework
New invention a special pen a special clock a robot
What it is used for taking notes for me waking me up doing homework with me
Work on 3b.
Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class.
This special pen was invented by Liu Jie. It has three colors and is used for…
Sample:
This special pen was invented by Liu Jie. It has three colors and is used for taking notes quickly. It is very useful if you have a lot to write down. The pen comes with a microchip that can store a list of common words that you will use. You can program the words you will use often into the microchip’s memory, then assign a short form to each word. When you are writing, you just need to write the short forms with the pen, press a button on the pen and all the short forms will change into the actual words. The microchip can contain up to 50 words and you can make changes to the list of words whenever you need to.
Step 4 Self Check
Finish Self Check 1.
(1)Ask the students to read and review the words in the box.
(2)Make the students fill in the blanks on their own.
(3)Organize the students in pairs, and get them to correct the work of each other.
(4)Encourage the students to read aloud the passage.
2. Finish Self Check 2.
(1)Ask the students how to write a passive voice sentence simply.
(2)Ask some students to rewrite the sentences on the blackboard.Other students rewrite the sentences on their own.
(3)Check the answers.
3.Finish Self Check 3.
(1)Make the students read the instruction and understand how to work.
(2)Lead the students to review the inventions in this unit. Make them quickly and simply describe the inventions.
(3)Ask the students to choose one invention to finish the writing.
Step 5 Do class quiz
I.短文填空
Basketball is a much - loved and active sport enjoyed by many people. It is over 100 years old and is played by more than 100 million people in over 200 countries.
Basketball was invented by a 1. Canadian doctor named James Naismith. He created a game to be played inside on a hard floor. Players 2. are divided into(被分成) two teams and they must work together to get the ball in the other team's basket. 3. At the same time(同时), they need to stop the competing team from getting the ball into their own basket.
Today, basketball is more and more popular around the world, with many young people 4. dreaming of becoming(梦想成为) famous players. In China, you can sometimes 5. see people playing basketball(看见人们正在打篮球) in many places. The number of foreign players has increased not only in the NBA, 6. but also(而且) in the CBA. Many young people 7. look up to(钦佩) these basketball heroes and want to be like them. These stars encourage young people to work hard to 8. achieve/realize their dreams(实现他们的梦想).
II.根据汉语意思完成下列句子。
9. 这个女孩一直都很崇敬她的祖父。
The girl always ________ ________ ________ her grandfather.
10. 他怎么想就会怎么说，你阻止不了。
You can’t ________ ________ ________ saying what he thinks.
11. 他梦想有朝一日成为一名著名小提琴家。
He ________ ________ becoming a famous violinist one day.
12. 孩子们被老师分成了六组。
The children were ________ ________ six groups by the teacher.
13. 自从上个月以来，图书馆里的书的数量增加了。
Since last month, ________ ________ ________ the books in the library has increased.
【答案】9. looks up to 10. stop him from 11. dreams of 12. divided into 13. the number of
Step 6 Homework
Write a short passage about the development of basketball.
Complete the students’ book of the 5th exercise.