Unit 6 When was it invented? Grammar Focus 课件

(共22张PPT)
Unit 6
Section A
Grammar Focus
Do you know what these inventions are
the first television
the first car
the first telephone
the first computer
Who were these inventions invented by
Karl Benz
Alexander Bell
J. L. Baird
Who was the first car invented by
John V. Atanasoff
The first car was invented by Karl Benz.
They are great inventors.
A:The inventions that were invented by inventors changed the world. Can you think of an invention
B:Yes.I think the first car is such a great invention.
A:When was it invented
B:It was invented in 1885.
A:Who was it invented by
B: It was invented by Karl Benz. He’s a great inventor.
A:What’s it used for
B:It’s used for driving.
Pattern 1
1885
Karl Benz
1876 Bell
1885
Karl Benz
1927 Baird
1971 John
Pair work
A:The inventions that were invented by inventors changed the world. Can you think of an invention
B:Yes.I think ...is such a great invention.
A:When was it invented
B:It was invented in ...
A:Who was it invented by
B: It was invented by... He’s a great inventor.
A:What’s it used for
B:It’s used for ...
paper-making
造纸术
compass
指南针
printing
印刷术
gunpowder
火 药
Four chinese ancient inventions
paper making
Cai Lun
105 A. D.
printing
Bi Sheng
1041-1045
Pair work
compass
11th Century
An ancient scientist
gunpowder
9th Century
an ancient alchemist
[ lk m st]
炼丹师
A:The inventions that were invented by inventors changed the world. Can you think of an invention
B:Yes.I think the first car is such a great invention.
A:When was it invented
B:It was invented in 1971.
A:Who was it invented by
B: It was invented by Karl Benz. He’s a great inventor.
A:What’s it used for
B:It’s used for driving.
★used to do sth.意为“过去常常做某事”。
★be used to doing sth.意为“习惯于做某事”。
★be used to do sth.=be used for doing sth 意为“被用来做某事”。
★be used as.意为“被用作于”。
★be used by sb.意为“被某人用”。
过去式被动语态的几种句型
肯定句 主语 + be + 过去分词 + (by…)
A sweet song was sung by her on the stage.
2 否定句 主语 + be + not +过去分词 + (by…)
3 一般疑问句 Be + 主语 +过去分词 + (by…)
A sweet song wasn’t sung by her on the stage.
Was a sweet song sung by her on the stage
4 特殊疑问句 疑问词 + be + 主语 +过去分词 + (by…)
Where was a sweet song sung by her
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
2. Somebody stole my camera from my hotel room.
My camera was stolen from my hotel room (by somebody).
3. Where did you take these photos
Where were these photos taken
4a Rewrite the sentences using the
passive voice.
4. Our parents advised us not to go out alone.
5. Different writers translated the book into different languages.
We were advised by our parents not to go out alone.
The book was translated into different languages by different writers.
4b Complete the sentences with correct
forms of the verbs in the box.
The keys
were invited
were brought
was locked; rang
were told; broke
were eaten; liked
4c Write the correct forms in the blanks.
The keys
was invented
was born
worked
learned
was invented
was said
is used
一感指 feel 二听指 listen to 和 hear
三让指 have, let 和 make
四看见指 see, watch, notice 和 observe 半帮助指 help
1. 主动语态中表示“感，让，听，看等汉语意义的感官动词爱主动语态中省略不定式“to”,但在被动语态中 “to” 要还原。
2.以动词短语作谓语的主动语态变被动语态时，不可丢掉后面的介词或副词。
注意事项：
3.有些及物动词或动词短语不能用于被动语态：last ,have ,own …..belong to ,suit ，sell well , write well ,ride well ,drive well
4.不及物动词是没有被动语态：happen ,take place ,appear , hold
5.系动词是没有被动语态：Look, feel ,sound ,smell ,taste ….
6.有些动词后面常接doing 形式表示被动意义（need，want,require,be worth)
7.双宾：give/teach/show/pass buy/make/cook
练习册p85
Self Check
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).