Unit 6 When was it invented? Section B Self-check 课件

(共27张PPT)
一般过去时被动语态
一般过去时的被动语态表示过去某一时刻发生的被动性动作, 其基本结构为：
主语+ was / were + 过去分词+ by ...
The teacher was visited by them two years ago.
他们两年前看过这位老师。
主动变被动解题步骤:
1. 找宾语 ----即动作的承受者
2. 判断宾语的单复数 ----即be动词的单复数
3. 判断动词的时态 ----即be动词的时态
4. 修改谓语的时态 ----即原句动词改为过去分词
5. 修改原句的主语 ----即by+ 主语/ 宾语
be要随着主语变
逻辑主语by来引
1. Tom broke the window.
The window was broken by Tom.
2. He broke the windows.
The windows were broken by him.
被动语态的大体构成：
be + P.P.（过去分词）
主动语态变被动之歌：
被动语态强调宾，be后加上过去分。
be要随着主语变，人称时态要弄准。
行为对象作主语， 逻辑主语by来引。
Some fruits were bought (by him) yesterday.
He bought some fruits yesterday.
The motorbike was ridden to his factory (by him) last night.
He rode the motorbike to his factory last night.
We made the snowman this morning.
The snowman was made by us this morning.
Complete the passage with the correct form of the words in the box.
1
invent doubt mention nearby website all of a sudden
invent doubt mention nearly website all of a sudden
It is often difficult to decide on the inventor of certain inventions. This is because sometimes a few people may __________ things which are __________ the same. It’s hard to tell who came up with the idea first.
invent
nearly
invent doubt mention nearly website all of a sudden
Some inventions can also lead to other inventions _____________. So some people _________ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention. That is why books or ________ usually _________ more than one inventor when giving information about inventions.
all of a sudden
doubt
websites
mention
Someone stole my watch.
They used five eggs to make this big cake.
Rewrite these sentences using the passive voice.
2
My watch was stolen (by someone).
Five eggs were used to make this big cake.
3. When did they invent the personal computer
4. They asked us not to run in the hallway.
5. Someone took the video back to the store.
When was the personal computer invented
We were asked not to run in the hallway.
The video was taken back to the store (by someone).
Invention:
When:
Who:
Purpose:
Find out information about an invention you would like to know more about and write sentences below.
3
switch plug (断路插头)
2012年， 富超穎 (中国)
scooter carriage (滑板婴儿车)
2007年， Valentin Vodev (奥地利)
seem to
see sb. doing sth.
阻止……做某事
the number of
pay for
have a point
7. 同时
8. realize one’s dream
9. encourage sb. to do sth.
似乎; 好像; 看起来
看见某人正在做某事
stop…from doing sth.
……的数量是
支付；付款
有道理
at the same time
实现某人的梦想
鼓励某人做某事
英汉互译
— When was the telephone invented
— ___ 1876.
A. On B. At C. In D. Of
— How was tea invented
— ___.
A. 5,000 years ago B. By accident
C. Shen Nong, a ruler D. Over an open fire
Choose the best answer.
— When ___ the teaching buildings ___ in your school
— In 2001.
A. was; built B. are; builded
C. were; built D. is; built
The Taiwan spotted deer, Fan Xing and Dian Dian, ___to the Chinese mainland on April 16, 2011.
A. have sent B. were sending
C. were sent D. had sent
I ___ little time to get ready for the test, so I wasn’t confident at that time.
A. gave B. didn’t give
C. was given D. wasn’t given
Computers are really helpful. They ___almost everywhere.
A. use B. used
C. were used D. are used
The first paper __________ (make) in China in 105 AD.
For over 500 years the art of making paper __________ (limit) to China.
In 610, papermaking ______________ (introduce) into Japan.
Kites ___________ (know) in China about 3,000 years ago.
was made
was limited
was introduced
were known
Fill in the blanks with the correct form of the given verbs.
5. Wheelbarrows ____________ (invent) in the Han Dynasty.
6. Gunpowder _______________ (discover) by the Chinese hundreds of years ago.
7. Soccer _____________ (develop) in England in the 12th century.
were invented
was discovered
was developed
根据中英文提示完成句子。
1. 根据历史记载，纸是由蔡伦发明的。
______________ history, paper ___________ by Cai Lun.
2. 大约三千年前风筝在中国就被人使用了。
Kites_____________ in China about 3,000 years ago.
According to
was invented
were used
3. 这个书架是木头做的。
This bookshelf _________________ wood.
4. 这部电影是由冯小刚导演的。
This film ______________________ Feng Xiaogang.
is made of
was directed by
按要求改写下列各句。
1. We planted these trees in 1997. (改成被动语态)
____________________________________
2. He made a cake yesterday. (改成被动语态)
____________________________________
3. The teacher gave the students some advice. (改成被动语态)
___________________________________
______________________
These trees were planted (by us) in 1997.
A cake was made by him yesterday.
Some advice was given to the students by the teacher.
4. He was seen to read a book in his room. (用I作主语, 改为主动语态)
_____________________________________
5. She was helped by all the people. (改成一般疑问句)
_____________________________________
6. Recently a visitor damaged it.(改为被动语态)
_____________________________________
I saw him read a book in his room.
Was she helped by all the people
Recently it was damaged by a visitor.