(共31张PPT)
人教九上英语同步精品课件
人教版九年级上册
Unit 6 When was it invented
Section A
Grammar Focus—4c
语法精品课
1.学习本课新词汇:fridge, low, somebody, translate, lock, ring, earthquake,
sudden, bell, biscuit, cookie, musical, instrument, at a low price, advise sb. to do, translate... into..., all of a sudden
掌握句型：They sold the fridge at a low price.
Somebody stole my camera from my hotel room.
The earthquake happened all of a sudden, but luckily the villagers were
brought to a safe place.
2.归纳一般过去时被动语态的结构和用法。
3. 能够把主动语态的句子变成被动语态，同时把被动语态的句子变成主动语态。
4. 能够用被动语态表达自己的态度。
学习目标
Look at the pictures and rewrite the sentences.
The students clean the classroom every school day.
The classroom is cleaned by the students every school day.
The farmers grow tea plants on the sides of mountains.
Tea plants are grown on the sides of mountains by the farmers.
How delicious the soup is! Who cooked it
Mom cook the soup.
It was cooked by Mom.
Look at the pictures and make sentences in the passive voice.
The tree was planted five years ago.
tree, plant, five years ago
praise, mother, just now
The boy was praised by his mother just now.
books, carry, classroom, in the morning
The books were carried into the classroom by the boy in the morning.
flowers, water, yesterday
The flowers were watered by the girl yesterday.
Talk about the following inventions using the patterns:
A: When was it invented
B: It was invented in1976.
A: Who was it invented by
B: It was invented by Steven.
A: What is it used for
B: It is used for ...
Complete the sentences according to the Chinese and pictures:
The cars _____ _________in 1885.
汽车在1885年被发明。
Flowers ______ _____in the garden last year.
去年鲜花被种在花园里。
The man _____ ___to the hospital an hour ago.
一小时前那个人被送到医院去了。
were invented
were planted
was sent
New words
fridge
low
somebody
translate
lock
ring
earthquake
sudden
all of a sudden
bell
biscuit
cookie
musical
instrument
n. 冰箱
adj. 低的；矮的
pron. 某人 n. 重要人物
v. 翻译
v. 锁上；锁住 n. 锁
v. (rang, rung) 发出钟声或铃声；打电话
n. 地震
adj. 突然(的)
突然；猛地
n. 钟(声)；铃(声)
n. 饼干
n.曲奇饼
adj. 音乐的；有音乐天赋的
n. 器械；仪器；工具
Grammar Focus
Read the sentences and translate them.
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 : Alexander Graham Bell invented the telephone in 1876. Passive Voice: The telephone was invented (by Alexander Graham Bell) in 1876.
Grammar Focus
What did you find out
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 : Alexander Graham Bell invented the telephone in 1876. Passive Voice: The telephone was invented (by Alexander Graham Bell) in 1876.
主动语态和被动语态的概念和转换
主动语态：主语Alexander Graham Bell是动作invent 的执行者。
主动语态
被动语态
被动语态：主语The telephone是动作invent 的承受着。
Alexander Graham Bell invented the telephone in 1876.
The telephone was invented (by Alexander Graham Bell) in 1876.
主动语态
被动语态
主(执行者)
谓
宾(承受者)
①
③
主(承受者)
谓
by(执行者)
②
将下列句子改为被动语态
We planted trees last week.
主动语态变被动语态解题步骤
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.把谓语改成was/were+V.过去分词
5. 修改原句的主语 ----即by+ 主语/ 宾语.
宾变主,主变宾,前加by
动变被,看清be, 结构分别be+ pp
Tree was planted by us.
4. 判断新主语的单复数:确定be动词
的单复数
He washed his car yesterday.
His car was washed (by him)yesterday.
Did you clean up your room last night
Was your room cleaned up last night
He saved the lives of the children.
The lives of the children were saved
by him.
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 : Alexander Graham Bell invented the telephone in 1876. Passive Voice: The telephone was invented (by Alexander Graham Bell) in 1876.
一般过去时被动语态谓语动词的构成
主语+was\were+ done(过去分词)+其他成分
Tom made the new machine last week.
The new machine ______ _______ by Tom last week.
was made
What did you find out
一般过去时的被动语态的句式结构
肯定句 主语+was/were+及物动词的过去分词（ + by…）
否定句 主语+was/were + not+及物动词的过去分词（+ by…)
疑问句 Was/Were+主语+及物动词的过去分词（+by …)
特殊疑问词+was/were+主语+及物动词的过去分词（ +by...)
一般过去时被动语态的结构为“主语+ was /were +及物动词的过去分词(+by+动作的执行者).”。
如：
Trees were planted last year.去年种了树。
一般过去时的被动语态
用 法 示 例
表示过去某一具体时间发生的动作，且句子的主语是谓语动词动作的承受者
The house was built in 1990.
这所房子建于1990年。
讲述发生在过去的动作，且不知道动作的执行者
He was honored with the name
“ Father of Hybrid Rice”.
他被授予“杂交水稻之父”的称号。
一般过去时被动语态
考点一：基本用法
含有短语的主动语态变被动语态
考点二
My father fixed up the house.
The house was fixed up by my father.
The house was fixed by my father.
动词短语在变被动语态的时候，不能去掉构成短语动词的介词或副词；要当作一个整体
含有双宾语的主动语态变被动语态
考点三
Tom gave me a book yesterday.
I was given a book by Tom.
A book was given to me by Tom.
当指“人”的间接宾语变为主语，指“物”的直接宾语保留不变；如果把指“物”的直接宾语变为主语，则在间接语前加to或for
直接宾语做主语
间接宾语做主语
口诀：如遇双宾语，一般变间宾，若把直宾变，to /for 间宾连。
考点四
I saw a heavy man enter the house.
主动句中感官动词see / hear / watch / feel等和使役动词make / let / have等后跟省略to的动词不定式，变为被动语态时应加上不定式标志to。
感官动词和使役动词的被动语态
口诀：
感使动词真叫怪，to来to去记心怀，主动语态to离去，被动语态to回来。
A heavy man was seen to enter the house.
考点五
系动词 (get/turn/become/seem/look/sound/smell/taste/feel+adj.)不及物动词或某些短语动词（happen, cost,
take place, run out, come true, fall asleep…）没有被动语态。
不能使用被动语态的动词
The book cost Laura twenty dollars.
What happened to Mr. Brown
This blouse belongs to Mary.
1.The young man saved the lives of the children.
2. The villagers didn’t find the lost boy at last.
3. Did you clean up your room last night
4. My mother bought me a new CD player.
将下列句子改为被动语态。
The lives of the children were saved by the young man.
The lost boy wasn’t found by the villagers at last.
Was your room cleaned up last night
A new CD player was bought for me by my mother.
They sold the fridge at a low price.
____________________________________________________
2. Somebody stole my camera from my hotel room.
____________________________________________________
3. Where did you take these photos
____________________________________________________
The fridge was sold at a low price.
My camera was stolen from my hotel room (by somebody).
Where were these photos taken
4. Our parents advised us not to go out alone.
_____________________________________________________
5. Different writers translated the book into different languages.
__________________________________________________________
We were advised not to go out alone by our parents.
The book was translated into different languages by different writers.
4a
Rewrite the sentences using the passive voice.
eat lock like ring invite break tell bring
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
were brought
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
were told
broke
were eaten
liked
注意be动词和时态
4b
Complete the sentences with the correct forms of the verbs in the box.
The telephone _____________(invent) by Alexander Graham Bell. He __________ (born) in 1847. Mr. Bell ________ (work) on the invention of the telephone with Thomas Watson. 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.
was invented
was born
worked
learned
was invented
was said
is used
4c
Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.
1、They sold the fridge at a low price. 他们低价出售了冰箱。（P44）
【考点梳理】at a low price的用法at a low price意为“以低价”。表示价格的高低，用high/low，不用expensive/cheap。修饰商品时，才能用expensive/cheap。
House prices are very high now. = Houses are very expensive now.
【小试牛刀】—I can't afford the white dress.—What about the orange one The price is a little __________. A. cheaper B. higher C. lower D. more expensive
√
2、Different writers translated the book into different languages.
【考点梳理】translate的用法translate为及物动词，意为“翻译”，translate … into… 意为“把……译成……”。
Can you translate the text into Chinese
【词性转换】translator n.译者；译员；翻译家 translation n.译文；翻译（工作）The girl acted as a translator for the two strangers from different countries.
【小试牛刀】This machine can ____________ (translate) simple messages into 24 different languages.
be traslated
3、The earthquake happened all of a sudden, but luckily the villagers were brought to a safe place.
【考点梳理】all of a sudden的用法all of a sudden为固定短语，意为“突然；猛地”，在句中做状语，可位于句首或句末，相当于suddenly。All of a sudden, I realized what I had to do.
【小试牛刀】 根据汉语提示完成句子When he was looking into a hole, a big cat _____________ appeared（突然地）.
all of a sudden
一、根据句意及首字母或汉语提示写单词。
1．If you feel hot, you can get some cold drinks from the f______ and drink them.2．He will never forget the e________ that caused the death of thousands of people last year.3．When the bell r_____, everyone rushed out of the classroom.4．Sally, what is your secret to making such delicious ________(曲奇饼) 5．Why not ask Marco to show how to use these ____________(器械)
ridge
arthquake
ang
cookies
instruments
二、单项选择。
1．We ________ to reach for our dreams in the graduation ceremony(毕业典礼) last week.A．encourage B．are encouraged C．encouraged D．were encouraged
2．— Eric, you ________ to go the teachers' office just now. What's up — We aren't allowed to bring phones to school. Em, but I broke the rule.
A．told B．tell C．are told D．were told
3．— Why have I never seen this kind of mobile phone — Because it ________ by Huawei last month.
A．was produced B．would produced C．has produced D．are produced
4．Paper, one of the greatest inventions in ancient China, ________ by Cai Lun about 2, 000 years ago.
A．was invented B．is invented C．were invented D．are invented
5．— Did you notice the students ________ a few why questions in Mr. Zhang's class — Yes, I think he wanted to train their abilities of deep thinking.
A．are asked B．must be asked C．have been asked D．were asked
√
√
√
√
√
三、根据汉语意思完成下列句子。
1．突然，我记起我没有锁门。____ ____ ____ ____ I remembered that I hadn't locked the door.2．你能帮助我把这首英文诗翻译成中文吗？Can you help me _______ the English poem _____ Chinese？3．我的妈妈上个月以很低的价格买了一台电脑。My mother bought a computer ____ ____ ____ ____ ______ last month.4．人们认为, 茶在六、七世纪传到了朝鲜和日本。____ ____ ____ that tea was brought to North Korea and Japan during the 6th and 7th centuries.5．你看了这个节目才会意识到我们中国的饮食有多美妙。You _____ realize how wonderful our Chinese food is _____ you watch the program.6．我被迫把整个事件再说了一遍。I ____ ____ ____ repeat the whole matter.
All of a sudden
translate
into
at a very low price
It is believed
won't until
was made to
Homework
1．Read the passage in 4c and retell the story in your
own words.
2．Look for an invention that you are interested in and
read books about it. Then share it with the class.
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