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初二教案 第740期
发布时间:2021-05-31

42/740期初二教案

顾晓辉

‘Father of hybrid rice’ passes away (P4-5)

 

 

I. Pre-reading

·What do you know about Yuan Longping?

·What contributions did he make to the world?

·What was Yuan Longping's dream?

 

 

II. While reading

·What is Yuan Longping considered to be?

The father of hybrid rice.

 

·How many extra people does hybrid rice feed each year in China?

It feeds an extra 80 million people a year.

 

1. be devoted to sb (doing sth)=devote oneself to sb (doing sth)

  (1) 致力于,献身于。e.g. The students are devoted to their studies.

  (2) 专用于。e.g. This dictionary is devoted to explaining word usage.

  (3) 喜欢,疼爱。e.g. She is devoted to her children.

2. devote sth to (doing) sth 把时间(钱,精力等)献给某事物。 

e.g. He devoted all his free time to playing the piano.

3. which在这里引导的是非限制性定语从句,指的内容是前面所讲的“hybrid rice”

 

·Why did Yuan Longping study agriculture?

To help bring an end to hunger in China.

 

insisted on doing 坚持做某事

support sb 支持某人

 

·What did he decide to do after seeing people die of hunger?

He decided to study hybrid rice.

 

die of 死于内因(疾病等)

die from 死于外因(车祸等)

last from to持续到

 

decided to 决定做某事

四朵金“花”,花费时间/金钱做某事

sb spend sometime on sth doing sth

It takes/took sb some time/money to do sth

sth cost sb some money

sb pay for

 

succeed in doing 成功做成了某事

succeed v. 成功 

success n. 成功

successful adj.成功的

successfully adv. 成功地

a yield of产量

a yield of over 500 kg per mu 每亩的产量超过了500kg

 

·What was the yield of hybrid rice in 2020?

It reached 22.5 tons per hectare in two growing seasons.

 

·Please translate the following sentences.

a. One was to enjoy the shade under rice crops that were taller than men. 

a. 一个是在比人还高的稻禾下乘凉的梦(禾下乘凉梦)

 

b. The other was that hybrid rice would be grown all over the world.

  b. 另一个是杂交水稻覆盖全球梦。

 

III. Further reading

More about his life

·Yuan liked to study English, geography (地理) and chemistry (化学), but he wasnt a fan of math. He was fluent in English and Russian.

·His hobbies included volleyball, swimming and violin. In 1963, he used his first months salary (薪水) as a teacher to buy a violin.

·Yuan was kind. He once gave 2,000 yuan, or half of his salary, to a student whose father was sick.

·Yuan loved to ride motorcycles (摩托车). Since he often worked in rice fields, it was convenient for him to ride to work.

 

a fan of 热爱

be fluent in 精通,熟练

be convenient for 方便,便捷

 

Praise for Yuan

       In 1991, the United Nations (联合国) invited Yuan Longping to work as its chief consultant (首席顾问). He has traveled to many foreign countries to share his knowledge of hybrid rice. Many experts were sad to hear of his death.

       Yuan made outstanding contributions (贡献) to boosting (促进) food security, eradicating (消除) poverty and improving peoples livelihoods.

UN 

       He made such a powerful contribution. He was one of our most laudable (值得赞美的) leaders. Professor Yuan will long be remembered.

Barbara Stinson, president of the World Food Prize Foundation (WFPF)

       China and the world have lost one of the greatest agricultural scientists on our planet and I have lost a great friend. His legacy (遗产) will provide inspiration to generations (一代又一代) far into the future, in China and across the world.

Kenneth M. Quinn, president emeritus (名誉主席) of WFPF

 

Translate the two sentences.

1. He was one of our most laudable leaders.

他是我们最值得称赞的领导人之一。

 

2. Yuan made outstanding contributions to boosting food security, eradicating poverty and improving people’s livelihoods.

袁隆平为促进粮食安全、消除贫困、改善民生作出了突出贡献。

 

IV. Post reading

What would you say to Yuan if he were still alive? Has he inspired you in any way? Write down what you’d say.

 

 

 

 

 

 

Plastic as a fashion trend? (P6)

 

 

I. Pre-reading

·What do you usually do with your empty water bottles?

·What do you think water bottles can be used for

 

II. While reading

·What were the 18 clothing items made from?

They were made from recycled plastic bottles.

 

made out of 制成

be made from制成(看不出原材料)

be made of 制成(能看出原材料)

 

·Why did JUMA make clothes out of plastic bottles?

A. To create a new fashion trend.

B. To compete with other companies.

C. To meet the needs of their new designs.

D. To reduce plastic garbage and save Earth.

 

·billions of数十亿的  hundreds of数百的

“hundredthousandmillionbillion”前有具体的数词修饰的时候不加s

如:2 billion 20亿,2 hundred 两百

 

·What is Paragraph 4 about?

A. How plastic bottles are collected.

B. How plastic bottles are turned into thread.

C. How other companies save the environment.

D. How the 18 clothing items were made.

 

·similar相似的    

be similar to/in 相似

  e.g. My teaching style is similar to that of most other teachers. 

e.g. The two houses are similar in size.

 

·How many bottles do we need if we want to make three pillowcases?

Twelve./ We need twelve bottles.

 

·compared with做比较

e.g. He compared his camera with mine

compared to 比作

e.g. we often compare a teacher to a candle.

 

·According to Causeartist, clothes made from plastic bottles _____.

A. are strange to wear

B. will cause doubts

C. are of good quality

D. need to be more creative

 

·have doubts about怀疑

focus on关注

 

·What does the last sentence suggest?

A. Green might be the most common color in the fashion industry.

B. The future of fashion might see more different textures.

C. Being innovative might become a fashion trend itself.

D. More companies might make clothes from plastics.

 

·It seems that 似乎好像,引导表语从句

lead to 导致、通向

 

Read the passage and fill in the blanks, then try to retell.

What

Recently, some clothes were made from recycled plastic bottles.

Why

By doing this, we can reduce carbon emissions (碳排放) and water use, and protect/help the environment.

How

First, the plastic bottles are washed and cut into small pieces. Then they are melted and shaped into small balls. The balls are melted again to form thread. People can then use the thread to make different kinds of clothes.

Result

Clothes made from plastics could be even better than nylon and polyester. Plastic thread can be made into different textures. It seems that this innovation may lead to a greener future of fashion.

 

 

III. Further reading

     Of all the plastic produced since the 1950s, less than 10 percent has been recycled. The vast majority ends up being dumped (倾倒), most of it in landfills. Some is left to litter the natural environment, where it can go into rivers and wash out into the sea.    

    Plastic is derived from petrochemicals(石油化工产品). Bitumen (沥青) is produced as a by-product(副产品) of refining(精炼) oil. Both are polymers(聚合物), which consist of long strands of molecules(分子) bound together firmly. It is this characteristic that makes plastic strong and contributes to its great longevity (长寿).                                  

     Such features are also useful for road builders, who use hot bitumen to bind together aggregates made from broken rocks and stones into what is commonly known as bitumen. All of which has got some people thinking: why not swap one polymer with another? Recycled plastic is already used to make some products, such as guttering(排水材料)and sewage pipes.

    Now attention is turning to roads. In Zwolle, a town in the Netherlands, a 30-meter bicycle track was made from 70 percent recycled plastic and the rest from polypropylene(聚丙烯). It will be used to test a product called PlasticRoad.  PlasticRoad is prefabricated(预制的) in a factory as modular sections. The sections are then transported to the site and laid end to end on a suitable foundation, such as sand.

    Because these sections are hollow(空的), internal channels can be incorporated into them for drainage, along with conduits for services such as gas and electricity. They can also be fitted with sensors to measure things such as temperature, flexing and the flow of water through the channels.                                                         

 

·end up doing ...而告终
e.g. Policymakers will probably end up doing this.
政策制定者最终很可能会这样做。

·is derived from源自;从...中产生
e.g. Ann‘s strength is derived from her parents.

 

·consist of 构成

 

1. Bitumen is produced as a by-product of refining oil.    

2. It is this characteristic that makes plastic strong and contributes to its great longevity.

3. The sections can be fitted with sensors to measure things such as temperature, flexing and the flow of water through the channels.

 

IV. Post reading

·Group activity – talk about more ways to recycle or reuse plastic. Create a poster to present your ideas.

 


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