初三下Unit 6

初三 Unit6 When was it invented?

龙口中学 史桂玲

一.单元分析

本单元通过谈论一些重要发明的历史及用途,增进学生的爱国热情,拓展想象力,培养创造力。本单元语法为被动语态。

二．重．难点

1. When was/were…invented?

2. Who was/were…invented by?

3. What is/are…used for?

4. What do you think is the most helpful invention?

5. Did you know…was/were invented by mistake?

6. notice sb do/doing notice that + 从句

7. prefer…to…

三．学习策略

比较，体验，合作探究

四．课时划分

第一课时：P39-40

第二课时：P41-42

第三课时：P43-44

第四课时：Reading

第五课时：Grammer

五．课前准备工作

让学生预习会本单元单词

The first class

教学目标

1. Talk about the history of inventions

2. 激发学生的求知欲及创造欲

教学步骤

一．导入新课

1. 找学生把Section A 1a中单词写到黑板上并领读数遍。

2. Do you know when each one was invented? Now let’s guess.

T:When was the telephone invented? （板书并让学生重复2遍）

Tom , do you know?

S:I think it was invented in 1876.

T:Good. It was invented in 1876.　（板书并让学生重复2遍）

3. 以同样的方式，用＂car＂练习本句型

4. 俩人一组用1a中的图片练习上述句型，并把猜测的发明时间按先后顺序填入1a中。

二．Listen

1. Lisen 1b two times and fill in the chart

2. 仍用telephone 练习新句型

T:Who was the telephone invented by? Jack, please tell us.

（板书，并让学生重复2遍）

S2:Bell

T:Good. It was invented by Bell.

What is it used for? Who knows? OK, Mike.

S3:It is used for talking to people in other towns.

区别be used by be used as/for

强调be used for doing=be used to do

3. 找学生读2a中的句子及短语，并译出汉意，领读数遍。

4. 放录音完成2a及2b练习

三．句型及对话练习

1. 俩人一组用1a,1b,2a,2b中的图片及信息,练习黑板上的句型:

When was/aere…invented?

Who was/were…invented by?

What is/are…used for?

也可以用其它的发明来练习

2. 教师用投影仪打出一组图书,如电灯,闹钟等。让学生俩人一组做对话,巩固练习。

四.小结

1.学生总结本节课所学内容。

2.Stress

我们在学习上述内容时，运用了被动语态，找学生说什么叫主动语态，什么叫被动语态，主、被动句之间的变化规律，本节我们主要运用了一般现在时被动结构：is/am/are+done及一般过去时的被动结构：was/were+done如：who broke the glass?----who was the glass broken by?

五．检测：

（一）汉译英

1．后跟可调整的鞋是谁发明的？

2．电动拖鞋是用来干什么的？用来在黑暗中视物。

3．电话是什么时候发明的？1876年。

（二）填介词by as for

4.who was the light bulb invented_________?

5. Knives are used_______people _______cutting things.

6. English is used______a works language in the UN.

（三）句型：

7．Who wrote the book?(变被动)

8．Paper was invented by Cai Lun(提问)

9．The personal computer was invented in 1927

10.Theroses are used for keeping water warm.①提问 ②同义句

The second class

教学目标

1. What do you think is the most helpful invention?

2. 气味,味道等单词及应用

3. Did you know potato chips were invented by mistake?

4. prefer…to…

教学步骤

一.复习

1. 齐读3a中的图片单词

2. 复习句型

When was the alarm invented?

Who was it invented by?

What is it used for?

依次用其它两幅图复习上述句型

二.导入新课

1. There are many inventions in our life. Some are helpful,some are annoying. Can you think of what inventions are helpful and what inventions are annoying?

Complete 3a并找学生读一下自己的答案

2. T:What do you think is the most helpful invention? Tom, could you tell me?

S1:I think the light bult is the most helpful invention.

T:Why is that?

S1:Because it gives us light.

T:Good. Because it gives people more time to work and play every day.

三.对话

1. 俩人一组练上述对话,用3a中所填信息,可变换以下单词来练对话:useful,boring,annoying,interesting,creative,and so on.

2. 找几组进行表演

3. Groupwork

Imagine you are alone on a tiny island, choose five inventions you would like to have on the island with you.Tell the group what you choose and why. You can use the following sentences

A:I’d like to have a… because I could…

B:Yes, and that’s going to help you leave the island. Ithink it would be better to have…

Ask some groups to act.

四.听力练习

1. Did you know potato chips were invented by mistake?

Now let’s listen to the recorder and learn about how potato chips were invented.

2. 听录音,完成Section B 2a, 2b then check the answers.

3. Read 2b several times.

4. Stress

Crispy easily broken by mistake由于差错　　salt(形容词)salty

5. 气味,味道等单词的练习应用

1) 找学生板书除了crispy,salty外,还学过哪些气味,味道方面的单词

2) Complete Selfcheck Part1

Check the answers Read together

Stress:prefer…to…=like…better than…

Eg:I prefer bananas to apples.

I prefer watching TV to playing basketball.

用投影仪打出一组练习:

I like English better than math.(同意句)

比起篮球,他更喜欢足球.

比起玩电子游戏她更喜欢读书.

六.小结 Ask students to do this

七.Test

1. 你认为什么是最有用的发明?我认为电灯是最有用的发明.

2. 你认为什么是最有帮助的发明?

3. 你认为什么是最讨厌的发明?

4. 你知道土豆条是由于差错而发明的吗?

5. 你知道三明治是无意中发明的吗?

6. This bowl of soup wasn’t_______enough, so he put some more_____in it.(salt)

7. Potato chips are crispy.(同意句)

8. Oranges are s______.

9. Who invented them?(被动)

10.I like tea better than coffee.(同意句)

The third class

教学目标

1. 阅读短文,练习写作

2. 介绍自己的小发明

教学步骤

一.阅读理解

1.Read the questions below the article in Section B 3a and try to find out the answers.

3. Stress

1)by accident 2)according to 3)over an open fire

4)fall into 5)in this way 6)decide to do

7)pleasant与pleased 8)notice sb do/doing notice that+从句 9)not…until…

二.写作练习

1. Write an article using the notes in 3b.

2. Ask dne or two students to read his article.

3. Stress

In the 1950s 在二十世纪五十年代 读作 in the nineteen fifties

In 1950 在1950年 读作 in nineteen fifty

In the 1900s 在20世纪 读作 in the twentieth century

三.小发明

1. 想一下自己不喜欢干什么事,想一个发明来替你做这件事,并仿照4a,制成发明说明卡.

2. Groupwork:学生在小组内介绍自己的发明

3. Ask some students to introduce their inventions.

4. 找两个组的代表,向全班同学兜售自己组内别的组员的发明,仿说4b中的句子

四.Groupwork

1. 以小组活动方式,讨论Selfcheck Part2中各物品的相关信息,如发明时间,谁发明的,哪国发明的.用途等.

2. Check the answers

3. 将各组的相关信息写成短文,首句已给出.

The abacus was invented in the sixth century by Chinese people…

4. Ask one or two students to read their articles.

五.小结

六.Test

1. The person computer was invented______________.(在20世纪)

2. The TV was invented________________.(在20世纪20年代)

3. America__________(发现)by Columbus____________.(偶然)

4. Don’t get off the bus___________.(直到车停)

5. Jack went to bed after his father came back.(not…until改写)

6. I often notice the boy_________(leave) school alone very late.

7. It was a________(please) party.I enjoyed it very much.

8. I have read this book twice.（被动）

The fourth class

教学目标：Reading

教学步骤

一．Pairwork

List eight sports played in China and rank them(1-8) in order of popularity.Complete 1a,1b.Ask some students to read their answers.

二．阅读理解

1.Q：1).How old is basketball?

2).Who invented basketball?

3).What’s the aaim of basketball?

4).When was the first basketball game played?

5).Did China take part in Berlin’s Olympic in 1936?

2.学生带着问题读课文后，对答案。

3. Listen to the recording and read the text after it.Correct the pronunciation.

4. Read the text again and complete Section3 3a的记忆图

5. Check the answers

6. 不看课文，利用头脑中的记忆图回答3b中的问题

7. Stress

1) devide…into…把…划分成…

The teacher devided the class into four groups.

2) hang 悬挂 hang-hung-hung 绞死 hang-hanged-hanged

A light is hanging over the table.

A man was hanged last night.

3) from below the basket 从篮子底下

复合介词的应用:He came out from under the table.

4) towards 朝向(adv.)

He went towards the door.

5)It is believed that+从句 人们相信…

类似的句型还有:

It is said that+从句 据说…

It is reported that+从句 据报道…

6)rise 上升 rise-rose-risen

raise 举起=put up

The sun rises in the east and sets in the west.

Raise your hands when you find out the answers.

7)since then 自从那时起

He has stopped smoking since then.

8) the number of …的数量

区别:a number of = many = lots of 许多,大量

9) dream of doing 梦想做…

He is always dreaming of becoming a star.

五.Test

1.A boy_________(hang) on the wall.

2.He was waving his hand while he was running t_____ the bus.

3. Three thousand metres b_____ the plane was a jungle.

4. The boys_________(devide) into four groups to have a match.

5. The number of foreign players in China_______(increase) since then.

6. Many young people___________.(梦想出国)

7. Many people play basketball__________.(为了娱乐,锻炼)

8. Who broke the glass?(被动)

9. How many English words________(learn) since you learned English?

10.This problem is hard_______(work) out.

The fifth class

教学目标

Grammar: the Passive Voice

教学步骤

授课提示:本节课重点不在讲,而在练,因为上册教材中已经学了被动语态.本节课只是把知识点再归纳一遍而已.以下几个步骤都由学生来完成,教师只作必要补充.

一.主.被动语态的区别

二.被动语态的区别

三.被动语态用法

1. 不知道动作的执行者或没有必要支出动作的执行者

These books are written for children.

Tea is grown in China.

2. 汉语中无主语时要用被动语态.

Smoking is not allowed in public places.

五.几种特殊情况的变化规律.

1.含有双宾语的句子变被动:

①间接宾语作主语,直接宾语留在原位.

②直接宾语作主语,间接宾语前要加to或for.常见家to的动词有give,lend,show,pass,bring,take等;加for的动词有:buy,get,make等.

Eg:He gave the boy an apple.

The boy was given an apple./ An apple was given to the boy by him.

2.含复合宾语即含宾语+宾语补足语的句子变被动,应用宾语作主语,宾补留在原位.

Eg: 1) We call him Xiao Wang------He is called Xiao Wang by us.

2)I told her to return the book on time------She was told to return the book on time by me.

3.含情态动词的句子变被动动词结构:情态动词+be+done

eg:We can’t see stars in the daytime----Stars can’t be seen in the daytime.

4.感观动词和役使动词的被动句常用的 hear see watch notice feel 五个感观动词和make let have 三个役使动词,在主动句它们的宾语补足语前不带动词不定式to,但在变被动句时一定要加上to.

Eg:He makes the boy work for him.----The boy is made to work for him.

5.have to do----have to be done

eg:I have to clean up my room.----My room has to be cleaned up by me.

六.被动语态的时态

被动语态的时态均以动词be的变化来体现.让学生具体总结一下.

七.教师用投影仪打出题组训练

A组:将下列句子变被动:

1. My parents don’t allow me to go out at night.

2. He put his key on the table.

3. We will finish the work in two hours.

4. He isn’t watching TV.

5. They were doing their homework at that time.

6. I have seen the film.

7. The policeman saw the thief rush into the bank.

8. I often hear him sing this song.

9. We should plant trees in spring.

10.Who invented the personal computer?

B组:

1. Did they sell out the shirts in your size this morning?(变被动)

2. He showed us his photos yestoday.(变被动)

His photos____ _____ _____ us by him yestoday.

3. The workers are building the bridge.　

The bridge _____ ______ _____us by him yesterday.

4.My mother bought me a book as a present.

　A book ______ ______ ______me as a present by my mother.

5.Tom often makes his sister wash his clothes.

Tom’s sister _____ often _____ _____wash his clothes.

八.Test

1.These photos _____(take) on the Great Wall.

2.A new railway _____(build) these days.

3.He didn’t come to the party because he _____(not invite).

4.He said that he _____(finish) reading the book.

5.we should speak to the old politely.(被动)　

6.Won’t they play basketball this afteroon? (被动)

7.The boy was made _____(work) for twelve hours.

8.Who _____the book _____(write) by in the 1940s?

9.She was given a new coat by her mother.(同)　　

A new coat _____ _____ _____ _____by her mother .

10.The story was happened in the city of Toronto.(改错)