unin4 Feed the world－教学教案

StepI:Introduction

　　Good morning,class.First,I will ask you a question: “Do you often feel hungry?”Wanglin,please…

　　While, maybe you don’t often feel hungry,because you have plenty to eat.But in some poor areas in the world,many people even starve to death.Is that true? Now,please open your book to page 20

　　And find out the answer: “How many people starve to death each year?” I only give you one minute.If you find out the answer, put up your hand.Let’s see who is the first.

StepII: Fast reading;

A.Scanning:

　　Find out the answer to the following question within two minutes:

　　“why is farmland being lost?”

B.Reading Comprehension

1. What can be dome to increase the food supply?

　　A.to plant new trees.

　　B.To reduce the lost in storage

　　C.To build more and more farms

　　D.To develop new plants for food        　　[D]

2.       Why is so much food lost in storage?

　　A.      The food is thrown away by people.

　　B.      People pay less attention to the food store

　　C.      The food is damaged by rain

　　D.     The food goes bad                   [B]

3.Food stores are frequently ruined by rain or damp.

　What does “ruin” mean?

　　A.removed     B.cleaned        C.damaged      D.washed away     [C]

4.What kind of plants are scientists developing ?

　　A.The plant which can be grown on the moon

　　B.The plant which are likely to be attacked by pests.

　　C.The plant which can be planted in poor soil

　　D.The plant which is heavier.                   [C]

StepIII.Fill in blanks(通过这个练习，既可以锻炼学生语境中对词汇的领悟力，又是高考完型填空的基础训练，课堂实践证明效果较好，建议教师选用)

　　Now, I will give you another seven to eight minutes to read the text in details.Please pay special attention to the key words and phrases.Then I’ll ask you to close your books and fill in blanks without consulting anything.

　　1.Half the world’s workers earn their living by _______.(farming)

　　2.The problen is how to feed a growing world population of _____6 billion. (over)

　　3.Only about 11% of the earth’s land surface is _____ for growing ______.And this area is becoming smaller day____ day. (suitable,crops,by)

　　4.That’s why the Chinese people are making great _____to ______ their farmland.(efforts,protect)

　　5.Farmland is being lost for several reasons.First,it is_____built _____.(being,on)

　　6.It’s well known that pests continue to eat crops,______damage. (causing)

　　7.The FAO has worked out that up ____ 30% of food is lost in storage. (to)

　　8.It’s thought that 500 million people in the world do not have enough to eat, that’s about one ____ten. Every year about 40 million people_______ to death. (in ,starve)

　　9.They are also developing new types of plants that can be grown in_____ soil or even sand, and that are less____ to be _____by____ and diseases.( poor, likely ,attacked ,pests)

StepIV. Diction

　　1.In this text, did you notice the word “farming”? What’s the difference between “farming” and “farm”? Let’s look at a sentence first.

　　The farmers live by _______.(farm,farming) (Which word will you choose?)

　　Yes,“farming” is the correct word.

Farm: an area of land, together with its buildings.

Farmland: only the land for farming.

Farming: working on the farm.

To farm : to do farm work

1).They like to eat _______.    2).They live by________.(fish,fishing)

2.work out: The FAO has worked out that up to 30% of food is lost in storage.

　　 a)work out 一词的“新词义”曾经出现在2001年高考“单项真空”中，现在，可结合Lesson14的内容，试用work out的“新词义”造句如下：
Various things have been done to increase the food supply in the world. But at first they all seemed unlikely to be of any efficiency at all. However, dozens of years have passed and most of the efforts seem to be working out far better than most of the optimistic people expected.

　　b)work at, work on, work out

　　work at和 work on都有“从事……”的意思。

在此意义上，两者可以换用。如：

　　Is Tom still working at / on the new novel that he promised?

　　work at 还有“在……工作”的意思。如：

　　How long have you been working at this school?

　　work on 还有（激起人的感情等）“对……起作用，影响……”的意思。如：

　　The sight of so much suffering worked on our hearts so that we were filled with pity.

这么多受难的情景时震憾了我们的心，我们心中都充满了同情。

　　work out 表示“计算出，解决（问题）”等意思。如：

　　Can you work out how much it costs to feed a common family?

　　I can’ t work out this sum.

　　work out 还有“想出，弄清楚（常用于否定句）”等意思。如：

　　We must work out a better method of saving money.

　　I can’t work out the meaning of this poem. 1. order的用法

StepV.Phrases

　　Be suitable for  day by day   up to 30%    ruin   in storage   starve to death  be likely to do   attack   various things

参考文档1

　　只有11%的地球表面适合种庄稼(be suitable for)，而且这个面积还在日渐减小(day by day)。高达30%的食品在存储时丢失(up to)。存储的食品被雨，老鼠不断的毁坏(ruin,in storage)。每年都有大量的人们因饥饿而死亡(starve to death)。人们正在尝试很多办法来增加粮食供给。科学家正在发明新的植物，这些植物不容易被害虫侵害(attack,pest)    。

参考译文：Only 11% of the earth’s land surface is suitable for growing crops.And this area is becoming smaller and smaller day by day.It’s worked out that up to 30% of food is lost in storage.Food stores are frequently ruined by rain ,or eaten by mice.Every year a great number of people starve to death.People are trying various ways to increase food supply.Scientists are developing new types of plants which are less likely to be attacked by pests and diseases.
听力完型教案

1.Listening: Fill in blanks(通过这项训练可以训练学生很强的专注力，这在高考中至关重要。同时还可以训练学生把握细节的能力，这样一篇听力材料会有更好的教学效果。)

feed the world

A food scientist is discussing the main types of food crops.( S=scientist; I=interviewer)

I: One of the most important food crops in the world of course is rice. Why is it so important?

S: Well, for one thing, everyone can eat it, and it’s suittable for sick people and young children.

I:Is it grown all over the world?

S: No. It needs a hot climate and lots of water.So it can’t be grown in cold countries or where there is little water. But where the conditions are right, you can grow three rice crops in a year.

I: Can you live on rice alone?

S: No.It doesn’t contain all the foods a body needs to stay healthy.Also it’s better to eat the whole grain, but in many parts of the world it’s the custom to remove the brown outside part of the grain. I: What about the potato?

S:Well,the potato is a very good food for the human body. So you could live for six months just by eating potatoes. In a year, you would also need to eat a little fat and some fresh fruit to stay healthy.

I:Where are potatoes grown?

S:They can be grown in cold cou