Unit 9 When was it invented?(Section B 3a)

课件29张PPT。Unit9When was it invented ?Section B 3aThe history of potato chips 1. that potato chips were
invented by mistake?
2.Chips by a chef called George Crum.
3.They were invented in .
4.George Crum cooked them for a long time until they .
5.And he sprinkled lots of salt on them so they were .

Did you knowwere invented1853were crispyreally saltyDo you know the history of tea ?Unit 9 Section B 3aWho invented tea?学习目标
（知识目标）
1.Key words&expressions(重点词汇)：
beverage(s), ancient,legend, bush, remain, notice, produce, pleasant, mixture, taste, by mistake, by accident, according to, fall into, in this way
2. Topic Sentences(关键句型 )：
1）Who invented tea?= Who was tea invented by ?
2) not ... until... 直到。。。才。。。
（能力目标）
1. 进一步学习并总结一般过去时态的被动语态用法
2. 阅读茶的由来，回答问题；
( 情感目标）
了解茶的发明历史，茶文化。
beverage
ancientlegend
remainnotice
producepleasant
mixture
taste
生产注视饮料留下品尝古代的传说混合物令人愉快的偶然
直到.. 才
根据
中国古代神话
令人愉悦的气味
用这种方法
超过三千年
决定做某事by accident
not…until
according to
an ancient Chinese legend
a pleasant smell
in this way
over three thousand years
decide to do sthTranslate the phases into English..Read the article and write answers to the questions.What is the article about ?
It is about the invention of tea.It was invented over three thousand
years ago.
It was invented by accident.3.How was it invented?
2. When was it invented?Who invented tea? Did you know that tea, the most popular drink in
the world (after water), was invented by accident?
Although tea wasn’t brought to the Western world
until 1610, this beverage was discovered over
three thousand years before that. According to an
ancient Chinese legend, the emperor Shen Nong
discovered tea when he was boiling drinking water
over an open fire. Some leaves from a nearby bush
fell into the water and remained there for some
time. The emperor noticed that the leaves in the
water produced a pleasant smell. Later he decided
to taste the hot mixture. It was quite delicious. And
in this way, one of the world’s favorite drinks was
invented.Explanation1. Although tea wasn’t brought to the
western world until 1610, this beverage
was discovered over three thousand
years before that.
虽然茶直到1610年才传入西方世界,
但这种饮料在三千多年前就被发现了。 not…until 意为 “直到……才”until 引导一个时间状语从句。
He did not go to bed until his father came home.
直到他爸爸回家时他才睡觉。2. According to an ancient Chinese legend, the emperor Shen Nong discovered tea when he was boiling drinking water over an open air.
根据中国古代的一个传说, 神农帝在户外的火上烧饮用水时发现了茶叶。 According to 是个短语介词,意为 “根据……;依照……”后接代词,名词或由疑问词以及whether引出的名词性从句。
According to the radio, it will rain tomorrow. 根据收音机说,明天有雨。
According to what you said just now, he was right then.
根据你刚才说的,那么他就对了。 3. Some leaves from a nearby bush fell into the water and remained there for some time.
一些叶子从附近的灌木丛落到水里。并在水里浸泡/停留了一段时间。
（1）leaf 的复数形式为----leaves
(2) nearby adj 附近的，临近的
adv 在附近
（3） fall into 落入，陷入 fall—fell—fallen
(4) remain vi（相当于stay）/系 v 留下.被遗留.剩余/保持
不变，一直保持，仍然
后可跟 形容词，名词，动词-ing，动词- ed或介词短语

4. this beverage was discovered 这种饮料被发现
discover 发现
find out 找出，查明
invent 发明，创作
5. over three thousand years 三千多年
some time 一段时间
6. notice n 公告，通知. 注意，察觉
v 注意到，察觉到
notice sb do sth 注意到某人经常做或做过某事
notice sb doing sth 注意到某人正在做某事
7. produce a pleasant smell 产生一种令人愉快的气味
produce v 产生，生产，制造（ make)
pleasant adj 合意的，令人愉快的讨人喜欢的-unpleasant
pleased adj 感到满意的/高兴的
pleasure n 愉快，快乐，高兴，乐事
with pleasure 当然了，很愿意
It’s a pleasure 不客气


The passive voice.被动语态 英语中动词有主动语态和被动语态两种语态. 主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者, 在被动语态中动作的执行者有时用by短语示出来。
被动语态的构成:
助动词be+ (及物动词的) 过去分词 am (is, are) + done
was (were) + done一般现在时一般过去时The passive voice.被动语态被动语态的用法: 不知动作执行者时,常用被动语态.
eg. My bike was stolen yesterday.
This car is made in American.
2. 不必要说出动作执行者时,常用.
eg. Rome was not built in a day.
3. 为了突出强调动作的承受者时,常用被动语态.
eg. Thousands of beaches are polluted (污染).The passive voice.被动语态主动语态变为被动语态的步骤:把原主动句中的宾语转换为被动语态的主语.
2.把动词改为被动形式,即 “be + 过去分词” . 注意 be
动词要按新的主语的人称和数进行变化,时态要和原来
的主动语态的时态保持一致.
3. 原来主动语态句中的主语,如果需要,就放在by后面
以它的宾格形式出现. 如果没有必要就可以省略.其他的
成分 (定语,状语) 不变, 句式也不能变.The passive voice.被动语态主动语态变被动语态的结构图:Bell invented the telephone in 1876.
The telephone was invented by Bell in 1876. 主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语The passive voice.被动语态主动语态改被动语态:Bellinvented the telephonein 1876.wasbyThe children ____ by the nurse.
A. were looked?????? B. looked after?
C. were looked after D. looked
2.The library ____ about five years ago.
A. was builded B. was built
C. builds D. has been built Choose the best answer for each question .原短语中的介词不可以省略中考链接辨析： by mistake / by accident
1.I took his backpack .我错拿了他的书包。
2.I met an old friend in the supermarket .我在超市偶然碰到了老朋友。by mistakeby accident Did you know that , the most in the world (after water), was invented ? Although tea to the until 1610, this was over 3,000 years before that. an , the Shen Nong discovered tea when he was boiling over an open fire. Some leaves from a the water and
there for some time. The emperor that the leaves in the water a . Later he taste the . It was quite delicious. And , one of the world’s favorite drinks . teapopular drinkby accidentwasn’t broughtwestern worldbeveragediscoveredAccording toancient Chinese legendemperordrinking waternearby bushfell intoremainednoticedproducedpleasant smelldecided tohot mixturein this waywas inventedWho invented tea?Retell:What kinds of tea do you know?1. Green tea 2. Black tea3. Wu long tea4. Compressed tea（砖茶）
[k?m'prest] ?压缩的 5. Scented tea （花茶）
['sentid] 有香味的 what are the effects (功效）of tea?
Make you more beautiful
Keep cancer from you
Help you lose weight
Make your mind clear
……..
When is the best time to drink tea in a day ?
夏喝绿，冬喝红，一年四季喝乌龙。It’s best to drink tea an hour after eating.Different seasons ,different tea Thank
you
for
your
cooperation