Unit 6 When was it invented? Section A (1a—1c) 过去式的被动语态 课件（24张PPT）

(共24张PPT)
Unit 6 When was it invented
Section A (1a—1c)过去式的被动语态
学习目标
1. 掌握一般过去式的被动语态：was/were + invented,
掌握固定短语：be used for。
2. 通过听1b，完成听力任务，并会运用句型：
—When was sth. invented
—I think it was invented in ….
—Who was it invented by
—It was invented by…
—What are they used for
—They are used for…来谈论发明物的时间, 人物和用途。
computer
TV
A: I think the … was invented before the ….
B: I disagree.( I agree. )
I think the… was invented after the….
car
clock
A: I think the … was invented before the ….
B: I disagree.( I agree.)
I think the… was invented after the….
laptop
camera
A: I think the … was invented before the ….
B: I think so. ( I don’t think so.)
I think the… was invented after the….
telephone
mobile phone
A: I think the … was invented before the ….
B: I think so.( I don’t think so.)
I think the… was invented after the….
Four great inventions in China
compass
gun-powder
paper-making
printing
Cai Lun
In Han Dynasty
record information
paper-making
A: When was the ... invented
B: It was invented in...
A: Who was it invented by
B: It was invented by...
A: What is the ... used for
B: It is used for...
A: When was the ... invented
B: It was invented in...
A: Who was it invented by
B: It was invented by...
A: What is the ... used for
B: It is used for...
printing
Song Dynasty
Bi Sheng
printing
Listen and match the inventions with the years.
1876
1885
1927
1971
When was the
...invented
a
b
c
d
d
a
c
b
Listening Practice
Summary
New sentences:
When was it invented It was invented in…
Who was it invented by It was invented by…
What’s it used for It’s used for …
过去式的被动语态
12
The Four Great Inventions of ancient China
Compass
Printing
Papermaking
Gunpowder
Do you know what these inventions are
Who invented the first car
Karl Benz invented the first car in 1885.
The first car was invented by Karl Benz in 1885.
be + done
Who invented the first telephone
Bell invented the first telephone in 1876.
The first telephone was invented (by Bell) in 1876.
be + done
Who invented the first television
J. L. Baird invented the first television in 1927.
The first television was invented (by J. L. Baird) in 1927.
be + done
A:When was the telephone invented
B:It was invented in 1876.
A:Who was it invented by
B:It was invented by Bell.
Pair work
1927
1885
1876
The passive voice
被动语态
主动语态变被动语态的结构图:
Bell invented the telephone.
The telephone was invented by Bell.
主语
谓语动词过去时
宾语
主语
谓语动词的过去分词
宾语
be + done
20
1. 贝尔于1876年发明了电话机。
Alexander Graham Bell _________ the telephone in 1876.
2. 电话机在1876年被贝尔所发明。
The telephone _____ ________ _____
Alexander Graham Bell in 1876.
Exercises
invented
was invented by
把下列句子变成被动语态的句子。
3.They planted these trees on weekends.
These trees _____ ______ on weekends.
4.The workers built the bridge in 1968
_____ _______ _____ built by the workers in 1968.
考考你
were
planted
The
bridge
was
be + done
Please remember:
No matter what you want to be in the future, you should study hard from now on, then your dreams will come true.
天才就是百分之一的灵感，加上百分之九十九的汗水。
--------Thomas Edison
How can we become an inventor
Be creative
Have an interest
Learn a lot
Thank you!