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九年级英语When_was_it_invented section A免费

发布时间:2014-01-02 13:39:58  

Unit 9
When was it invented?
发明使人类由黑暗走向光明。

inventor

Edison

invention

light bulb

Edison invented the light bulb.

The light bulb was 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 . ______

1a---number the pictures
Make conversations: A:Ithink the telephone was invented before the car. B:I agree .I think the calculator was inverted after TV

calculator

Listening (1b: P68)

1885

1976

1927

1971

1876

Pairwork (1c:P68)
A: When was the computer invented B: It was in vented in 1976.

?1976

Pairwork (1c:P68)

1885

Pairwork (1c:P68)

1927

Pairwork (1c:P68)

1876

Pairwork (1c:P68)

1971

Let’s look and talk

name?---when?--- who?

car
1885

Karl Benz.

A:When was the car invented? B:It was invented in 1885 A:Who was it invented by ?

B:It was invented by Karl Benz.

Let’s look and talk

name?---when?--- who?

light bulb

Let’s look and talk

light bulb

1879
A: When was the light bulb invented? B: It was invented in 1879 A: Who was it invented by ?

B: It was invented by Edison.

Edison

Pair work 1

Tv set

Beld

1927

When, who,

Pair work 2 calculator

1971

Kelif
When, who,

The passive voice.

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 英语中动词有主动语态和被动语态两种语态. 主动语 态

被动语态的构成:

助动词be+ (及物动词的) 过去分词

{ was (were) + done
情态动词+be+done

am (is, are) + done

一般现在时

一般过去时

情态动词

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 invented 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.

就下列句子的画线部

分提问: When was the stove invented ? 1.Q:__________________________ A: The stove was invented in 1896. Who invented the plane ? 2.Q: ___________________________ 3.Q: What is the washing machine used for ? ___________________________

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

5Q:Who was the washing machine invented by _______________________ Fisher.


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