eat too much body-building food you will grow taller and stronger but not necessarily healthier; if you eat too much protective foods for every meal you may lack energy. However without protective food(over a long period of time) you can get serious illnesses like scurvy(lack of vitamin C) or rickets(lack of vitamin D); if you don't eat enough food of any of the three kinds you may get anorexia(too thin).

Step 5. Homework: Write down more you know about diet.

Period two Reading

Teaching aims:

1. Enable Ss to become more aware of the difficulties associated with prepared foods.

2. Help Ss know the harms of unbalanced diets.

Teaching procedures:

Step 1. Pre-reading

1. Discuss in groups

Work out what nutrition they have

Which food contains more...? Examples of foods Answer sugar chocolate or grapes

cakes or bananas fat cream or rice

chocolate or chicken fibre peas or nuts

Pork or cabbage protein potato crisps or ham

eggs or cream 2. Thinking

1) What do you think should go into a good meal?

2) Imagine you and your partner are going to invite some friends for dinner. What special food of your place would you offer them? Plan a menu.

Answers: 1) A good meal should contain some food from each of the three categories above.

2) Sample dialogue:

S1: Now our favourite dishes in my hometown involve noodles. What abut you?

S2: Well, I like noodles too, so let's use that for the energy-giving part of our dinner.

S1: What do you like to eat with noodles?

S2: My favourite sauces are spicy ones. So let's suggest noodles with spicy tofu. That's very healthy and contains some of