Unit 2  Book Three
Section Aweight的短语搭配  Iron and the Effects of Exercise
Teaching Objectives
After learning this unit, Ss are supposed to be able to
●understand the importance of iron and the effects of exercise.
●find out ways to have iron deficiencies and ways to remedy iron deficiencies.
●grasp the key language points and grammatical structures in the texts in Section A and B .
●learn to write a paragraph of cause and effect.
●improve their reading skill---- distinguishing between facts and opinions.
●conduct a series of reading, listening, speaking and writing activities.
Time Allotment
1st and 2nd period------ Pre-reading Activites
3rd and 4th period------While-reading Activites
5th and 6th period -----Post-reading Activites and Section B
7th and 8th period------Listening and Speaking
Teaching Contents
I. Important Points
A. Key words and phrases:
Section A: moderate, consume, respectively, restrict, sufficient, indicate, advisable, modify, derive, interfere, remedy, take in, tip over the edge, throw up, sum up, 
Section B:  succession, imply, proposal, inference, corresponding, speculate, neglect, revise, tackle, alike, comment, beneficial, in contrast, apply to, engage oneself in, focus on,
point to
B. Key Sentence Patterns 
1)  Beard and other experts say it’s advisable for people in these groups to have a yearly blood test to check blood iron reserves.
2) If you pay attention to warning signs before iron reserves are gone, you can remedy the deficiency before it really becomes a problem.
II. Difficult Points
1. Iron deficiency is very common among women, affecting one in four female teenagers and one in five women aged 18 to 45, respectively.
现在分词短语作状语, 使用该结构时，应注意：
1）分词的逻辑主语应与句子主语一致。
2）分词有时也可有自己独立的逻辑主语，这时分词的逻辑主语与句子的主语不一致，这种结构称为独立结构。
3）现在分词在意思上与逻辑主语是主动关系， 而过去分词与逻辑主语则为被动关系。
2. The iron content of tomato sauce cooked in an iron pot for three hours showed a striking increase, the level going up nearly 30 times.
  独立结构的形式有：1）名词（或主格代词）+动词的非谓语形式；2）名词（或主格代词）+形容词；3）名词（或主格代词）+介词短语；4）名词（或主格代词）+副词；5）名词（或主格代词）+名词；6）用with引导的独立结构；7）用without, like, on引导的独立结构。
  独立结构在句中可作状语、定语或主语。
Teaching Procedures
I. Pre-reading Activities 
A. Warm-up activities
a) Work in pairs to discuss the following questions to learn about the students’ understanding of iron deficiency
1) Do you like sports?
2) What do you usually eat or drink after doing exercise?
3) Do you feel tired after doing exercise?
4) Do you think sports are always good to people’s health no matter how much they do it or when they do it?
5) What do you think is the best way to help women gain iron in their blood?
6) Do you think men also have the same problem of iron deficiency?
b) Work in groups to discuss the following questions.
1) Why do women often not have enough iron in their bodies?
2) If iron levels are low, what problems can women experience?
3) What can you eat to get iron and what disadvantages can these supplements sometimes have?
From our discussions, different conclusions can be drawn as follows:
1)  Sports are always beneficial to people’s health. People of different ages usually do some exercise to build up their bodies. Some choose to run slowly on the playground, some climb mountains, some play all kinds of ball games, and some old people only walk slowly. No matter what they do, they feel merry-hearted and strong afterwards.
2)   However, if people, specially the old, take too much exercise at some certain time, for instance, too early in the morning or too late at night, they feel exhausted and unable to sleep well. They even don’t have a very good appetite for anything the next day. Some young people even have to go to see a doctor after too much exercise beyond their expectation and stay away from school for some time following the doctor’s advice. 
3) It’s necessary to help people get to know that moderate exercise is what they really need and that it’s important to supplement iron and other materials people need after doing exercise.
Thus lead into the text by saying: Although sports are necessary and important for people’s health, what people need is moderate exercise. Besides, it is important for people to remedy iron deficiency by eating something rich in iron or some iron supplements.

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