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九年级英语When was it invented课件1

发布时间:2014-01-28 10:57:40  

When was it invented ?
发明使人类由黑暗走向光明。

神七飞天

Unit 9
Aims Practice Explain

When was it invented?

Listening
Exercise

When was it invented?
? 课时目标:

? 1.学会运用一般过去时的被动语态。 ? 2.了解一些伟大发明的历史。 ? 3.训练我们的口语和听力能力。

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Edison invented the light bulb.

light bulb

invention The light bulb was Edison inventor

invented by Edison.

Bell invented the telephone.

The telephone was invented by ___. ___________ Bell

Karl Benz invented the car.
______ The car was invented by Karl _______. Benz

1

2

3

4

5
http://www.jyivf.com

Listening (1b: P68)

1885

1976

1927

1971

1876

Revision
A: Who was the _______ invented by? B: It was invented by ______.

Bell Carl Benz

Revision
A: Who were the _______ invented by? B: They were invented by Edison ______.

Pairwork (1c:P68)

1927 1885 1976 1876

The television, television, television (A chant) Inventions, inventions, inventions

When was it invented ? Let’s talk about inventions ! The television, television, television The computer, computer, computer, was invented in 1927. When was it invented ? motorcar The motorcar, motorcar, The computer, computer, When was it invented ? computer, was invented in 1976 . The motorcar, motorcar, motorcar, The calculator, was invented calculator, in 1885. calculator The telephone, telephone, When was it invented ? telephone When was it invented ? The calculator, calculator, calculator The telephone, telephone, telephone was invented in 1971 . was invented in 1876 . 揭阳试管婴儿医院

The passive voice.

被动语态

英语中动词有主动语态和被动语态两种语态. 主动语 态表示主语是动作的执行者,被动语态表示主语是动作的 承受者, 在被动语态中动作的执行者有时用by短语表示 出来.

被动语态的构成:

{ was (were) + done

助动词be+ (及物动词的) 过去分词 am (is, are) + done 一般现在时
一般过去时

The passive voice.
被动语态的用法:

被动语态

1. 不知动作执行者时,常用被动语态. eg. My bike was stolen yesterday. This car is made in American. 2. 不必要说出动作执行者时,常用. eg. Rome was not built in a day. 3. 为了突出强调动作的承受者时,常用被动语态. eg. Thousands of beaches are polluted (污染).

The passive voice.

被动语态

主动语态变为被动语态的步骤:
1.把原主动句中的宾语转换为被动语态的主语.

2.把动词改为被动形式,即 “be + 过去分词” . 注意 be 动词要按新的主语的人称和数进行变化,时态要和原来 的主动语态的时态保持一致.
3. 原来主动语态句中的主语,如果需要,就放在by后面 以它的宾格形式出现. 如果没有必要就可以省略.其他的 成分 (定语,状语) 不变, 句式也不能变.

The passive voice.

被动语态

主动语态变被动语态的结构图:
Bell in

vented the telephone in 1876.
主语 谓语动词过去时 宾语 时间状语

The telephone was invented by Bell in 1876.
主语 谓语动词的过去分词 宾语 时间状语

The passive voice.
主动语态改被动语态:
Bell invented

被动语态

the telephone in 1876.

was

by

用所给动词的正确形式填空: was fixed 1) The bike __________(fix) up by Xiao

Ming yesterday.
are used 2) Sunglasses __________ (use) for

protecting people’s eyes.
is put 3) A picture _________(put) up on the

blackboard.
is spoken 4) French___________ (speak) in France. be allowed 5) Teenagers should _________(allow) to choose their own clothes. http://www.jyivf.net

就下列句子的画线部分提问: 1.Q:__________________________ When was the stove invented ? A: The stove was invented in 1896. Who invented the plane ? 2.Q: ___________________________ is the washing machine used for ? 3.Q: What ___________________________

A: The Wright brothers invented the plane.

A: The washing machine is used for washing
clothes.

就下列句子的画线部分提问:

When was the helicopter invented ? 4.Q: _______________________
A: The helicopter was invented in 1939. A: The washing machine was invented by

was the washing machine invented by 5Q:Who _______________________

Fisher.


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