Unit 6 When was it invented? Section A（Grammar focus-4c）课件(共25张PPT)

(共25张PPT)
Unit 6
When was it invented
Section A
Grammar Focus~4c
How was it invented
boiling water over an open fire
produced a nice smell
tasted the brown water —tea
It was invented by accident.
fell into …and remained…
Tell something about how tea was invented by accident.
One day Shen Nong was boiling drinking water over an open fire. Some leaves from a tea plant fell into the water and remained there for some time.
It produced a nice smell so he tasted the brown water. It was quite delicious and one of the world’s favorite drink was invented.
Lu Yu “the saint of tea” mentioned Shen Nong in his book Cha Jing. The book describes how tea plants were grown and used to make tea. It also discusses where the finest tea leaves were produced and what kinds of water were used.
Tell something about Lu Yu and his Cha Jing.
It is believed that tea was brought to Korea and Japan during 6th and 7th centuries. In England, tea didn’t appear until around 1660. The tea trade from China to Western countries took place in the 19th century.
Tell something about how tea spread to other countries.
根据课本内容，完成下列句子。
1. 拉链是什么时候被发明的？
______ _____ the zipper ________
2. 它于1893年被发明。
It ______ _________ in 1893.
Grammar Focus
was invented
When was invented
3. 它是由谁发明的？
______ _____ it invented ______
4. 它是由惠特科姆 贾得森发明的。
It ____ ________ ___ Whitcomb Judson.
5. 茶叶什么时候被带到韩国去的？
_____ ______ tea _________ to Korea
6. 是在六到七世纪之间被带到韩国。
It _____ _______ to Korea ________the 6th and 7th centuries.
was invented by
When was brought
was brought during
Who was by
7. 热冰淇淋勺用来做什么？
What ___ the hot ice-cream scoop
_____ _____
8. 它用来舀很冷的冰淇淋。
It’s _____ ____ ______ really cold
ice-cream.
used for serving
is
used for
Grammar Focus
When was the zipper invented？ It was invented in 1893.
Who was it invented by It was invented by Whitcomb Judson.
When was tea brought to Korea？ It was brought to Korea during the 6th and 7th centuries.
What is the hot ice-cream scoop used for It’s used for serving really cold ice-cream
Active Voice: Alexandar Graham Bell invented the telephone in 1876. Passive Voice: The telephone was invented (by Alexander Graham Bell) in 1876.
Grammar
英语动词有两种语态：主动语态（Active Voice)和被动语态(Passive Voice)。主动语态表示主语是动作的执行者，而被动语态则表示主语是动作的承受者。
e.g. We cleaned the classroom yesterday.
(主动语态，主语we是clean这一动作的执行者)
English is spoken by many people.
(被动语态，主语English是动作speak的承受者。
二、被动语态的构成
助动词be+及物动词的过去分词构成。助动词be有人称、数、和时态的变化。
一、语态
三、被动语态的用法：
1. 不知道谁是动作的执行者，或没有必要指出谁是动作的执行者。
e.g. This kind of car is made in America.
这款小汽车产自美国。
2. 需要突出或强调动作的承受者。
e.g. This dictionary is used by most
students.
这本字典是大多数学生在用的。
四.主动语态变被动语态的步骤.
Bell invented the telephone in 1876.
The telephone was invented Bell in 1876.
主动语态变被动语态的结构图:
2.be+谓语动词的
过去分词
1.主语
2.谓语动词
过去式
3.宾语
时间状语
3.主语
3.宾语
时间状语
by
主动语态变被动语态的步骤：
1、主动语态的宾语变为被动语态的主语；
2、主动句的谓语动词变为被动式结构，
即：be+及物动词的过去分词
3、主动句的主语变为被动句中by的宾语，当不
强调动作的执行者时，常省略。
4. 其它成分不变。
Summary
五、一般过去时被动语态的几种句型结构：
肯定句
主语+be( was, were)+及物动词的过去分词+(by…)
A cake was eaten by a mouse last night.
否定句
主语+ be+ not+及物动词的过去分词+(by…)
A cake wasn’t eaten by a mouse last night.
一般疑问句 Be+主语+及物动词的过去分词+(by…)
Was a cake eaten by a mouse last night
特殊疑问句
疑问词+be+主语+及物动词的过去分词+(by…)
When was a cake eaten by a mouse
4a
Rewrite the sentences using the passive voice.
1. They sold the fridge at a low price.
_______________________________
The fridge was sold at a low price.
n. 冰箱
adj. 低的;矮的
2. Somebody stole my camera from my hotel room.
_________________________________
_________________________________
My camera was stolen from my hotel room.
pron. 某人
n. 重要人物
3. Where did you take these photos
__________________________________
4. Our parents advised us not to go out alone.
__________________________________
__________________________________
5. Different writers translated the book into different languages.
__________________________________
__________________________________
Where were these photos taken
We were advised by our parents not to go out alone.
The book was translated into different languages by different writers.
v. 翻译
1. You ____________ to the party last night, weren’t you Why didn’t you go
2. The earthquake happened all of a sudden,
but luckily the villagers ____________ to a safe place.
were invited
eat, like, invite, tell, lock, ring, break, bring
were brought
4b
Complete the sentences with correct forms of the verbs in the box.
v. 锁上 n. 锁
n. 地震
突然;猛地
v. (使)发出钟声或铃声；打电话
3. The door __________ when we arrived, so we ______ the bell.
4. The students ___________ not to eat or drink in class, but Ruby ______ the rule when she started eating a biscuit in science class.
5. The cookies __________ by the hungry
kids in less than 20 minutes, and they really _____ them.
was locked
rang
broke
were told
were eaten
liked
n. 钟声;铃声
n. 饼干
n. 曲奇饼
The telephone ___________ (invent) by Alexander Graham Bell. He ________ (born) in 1847. Mr. Bell ________ (work) on the invention of the telephone with Thomas Watson.
was born
was invented
worked
Decide whether active or passive forms should be used in these sentence. Write the correct forms in the blanks.
4c
In 1875, Mr. Bell _________ (learn) how to send musical notes through an instrument
similar to a telephone. Finally, the telephone ___________ (invent) in 1876. The first sentence that _______ (say) on the telephone by Mr. Bell was “Mr. Watson, come here; I want to see you.” Today the telephone ______ (use) around the world.
learned
was invented
was said
is used
adj. 音乐的;有音乐天赋的
n. 仪器;工具
I. 完成句子。
1. My mother cleaned the room this morning.
(改为被动语态)
The room _____ _______ by my mother
this morning.
2. Was the model plane made by your brother
(补全肯定答语)
_____, it _____.
练一练
Yes was
was cleaned
3. The bag was stolen last week. (改为否定
句)
The bag ______ ______ last week.
4. The criminal was caught yesterday. (对划
线部分提问)
______ _____ the criminal ________
wasn’t stolen
When was caught
II. 将下列句子改为被动语态，每空一词。
1. We put off the meeting.
The meeting ___ ___ ___ by us.
2. Mother made me a new skirt.
A new skirt ___ _____ ___ me by Mother.
3. They asked me to help them.
I ___ _____ __ ____ ____.
was made for
was put off
was asked to help them
Which invention do you think is the most important Write a short passage to describe it.