When was it invented教案

学科：英语

教学内容：When was it invented?

教材分析及教学要求

重点1. 了解古今中外的一些发明创造的英文名字 在本单元，我们将搭乘“科技之光”，了解古今中外的一些发明创造的故事。我们中国有着悠久的历史，博大的文化，更有许多影响人类进程的里程碑式的发明创造。说起四大发明，想必大家都不陌生吧？那么，你知道它们的英文名字吗？ 好了，让我来告诉大家。

对了，从左到右，从上往下，分别是火药（gun powder），指南针( compass )，造纸术( paper making )，印刷术(g )。

认识了它们的英文表达后，是不是学起历史来更加有兴致了？是不是更加热爱我们的祖国了？没错！每个发明创造的背后都有许许多多有趣、辛苦的故事。大家

可以通过上网、看书，查到许多这方面的资料，从而丰富我们的视野。

任务设计

任务Ⅰ. 请将下列发明归类

computer, TV, car, hand-held calculator, camerawith adjustable heels, umbrella, tellying disk, heatedalight bulb, hamburgers, radwave oven, potaa, vacuum cleaner, tea, abacus, binoculars, bicycle, baated slalarm clock,

生活用品___________ ____________ _________ ___________ ____________ _________ _________

___________ ____________ _________ _________

___________ ____________

办公用品 ___________ ____________ _________ 交通用品 ___________ ____________ 科学工具 ___________

食物___________ __________ _________ _________

重点2. 被动语态

什么是被动语态呢？请先看下面两个例子： Idoor. 我打开门。

The dd by me. 门被我打开。

哦！原来表示某物被某人怎么样的时候，我们可以用被动语态来表示。那么，被动语态是怎么构成的呢？ 某物 + be 动词 + 动词的过去分词 + by + 某人 1．把主动态变成被动态的方法是把动词to be变成原来的主动态动词的时态，再加上主动态里动词的过去分词。

主动态： Bell invented tel贝尔发明了电话机。 在这个主动态句子中，时态是一般过去时，所以，变成被动态时，首先要把to be 变成它的一般过去时形式，即：was / were。然后加上主动态里的动词的过去分词形式。于是就变成了：

Telwere invented by Bell. 电话机被贝尔发明了。 注意进行时态的被动态。这种语态有时似乎难以使用，因为它要求用to be的现在进行时，这种形式在其他方面用得不多。

主动态：They are repairing the bridge. 他们正在修桥。

被动态：The bridge is being repaired b

桥正在被他们修理。

2．主、被动时态对照表： 时态/动词形式 主动态 被动态

一般现在时现在进行时g is being kept

一般过去时wa过去进行时 wag

was being kept 现在完成时 haas b过去完成时 hadad b一般将来时 will keep will b虚拟语气 would keep

would b 3. 本单元出现的被动语态 Who was it / wvented by? 它（它们）是由谁发明的？

It was / They were invented by … + sb. 它（它们）是由……发明的。 When was it / wvented by?

它（它们）是什么时候被发明出来的？ It was / They were invented … + time 它（它们）是……被发明出来的。 Wha/ aused for?

它（它们）有什么用途呢？

It is / They are used for + doing sth. 它（它们）被用来……。

任务Ⅱ. 请用下列词汇编几组特殊疑问句。（用被动语态）

elladjustable heels, tea, microwave ova 1.__________________________? (When) 2.__________________________? (When) 3.__________________________? (What) 4.__________________________? (Who) 5.__________________________? (Who)

任务Ⅲ. 请仿照sample，编三组对话介绍中国的四大发明吧！（ Four Great Inv）

Clues:

What: paper making Wh Cai Lun

When:usand eight hundred years ago What…for: record information A: What do youant invention? B: That is paper making. A: Who was it invented by? B: It was invented by Cai Lun. A: When was it invented?

B: It was inventedusand eight hundred years ago. A: Whaused for?

B: It is usedding informa 下面的表格将帮助你完成编对话。 the navwhen who

be used for gun powder Tang Dynasty don’t know

exploding, war, firewass War Dynale

knowing the dgusandundred years ago Bi Shengg

paper makingusand eight hundred years ago

Cai Luding information

任务Ⅳ. 阅读理解 Future computer

Do you forget to tulights and heateas when you go out of a room? In 2004 it will not matter. They will tulves off and on again when your return. You willatualighting and the humidity. (湿度) Awill detect ( 察觉)a human ( and, with luck, ignore ( 忽略 ) the dog!) and tuand wumans leave it will tuagain. Twill wugaluter, and they will do muan just tuand lights on andu. They will detect faulty electrical equwwarate ( 隔离)aan’t harm anyone, and then warn you thad repair. They will dand if you are ouuuter will callan. It will also call the poldetect a robber. This will not be too difficult because the lutside doors will be elu willusing oual card------u ug-----may be using a number known only to you. It will bant to land a housebreaker will have to tamper ( 乱动) wlock or with a window. Ivery difficult to make such tampering send a signal ( 信号 )uter.

The computer will ban a

fireman-policeman-servant. It will be aainer, anduainment willguIt does now, of course, but by 2040 entertainment will mean muu will be able to take part actively, rather than just watching. Questions:

1.Can the future computer help you turn on andlights?

_____________________________________. 2.Can the future computer warn you that the electrical equd repair?

_____________________________________. 3.If you are ouuse, who will callan? _____________________________________. 4.In the future, what will you udoor? _____________________________________. 5.Are you able to take paauter auture? _____________________________________.

参 任务设计

任务Ⅰ.

生活用品 telTVwith adjustable heels, baated slatedaalarm clock, light bulb, radwave oven, vacuum cleaner, umbrella, flying disk, camera

办公用品 computer, handed-held calculator, abacus,

交通工具 car, bicycle, 科学工具 binoculars

食物 potaa, hamburgers, tea 任务Ⅱ.

1. When were ellvented?

2. When wwith adjustable heels invented? 3. What is tea used for?

4. Who was microwave ovens invented by? 5. Who were potavented by? 任务Ⅲ.

1.A: What do youant invention? B: That is gun powder. A: Who was it invented by? B: I don’t know. A: When was it invented?

B: It was invented in Tang Dynasty.

A: Whaused for? B: It is usedwar,

2.A: What do youant invention? B: Thaass.

A: When was it invented?

B: It was invented in War Dynasty. A: Who was it invented by? B: It was invented ble. A: Whaused for?

B: It is usedwing the d 3.A: What do youant invention? B: Thag.

A: When was it invented?

B: It was inventedusandundred years ago. A: Who was it invented by? B: It was invented by Bi Sheng. A: Whaused for? B: It is usedg. 任务Ⅳ. an. 2an.

3.The computer. 4.Youal card. 5.Yes, I can