1.We need water. I’m thirsty, and I want to drink some water. If you are thirsty, you should drink some water.
2.People also need to have good sleep.
If you sleep only 5 hours a day, you’ll be tired.
3.Do you often get tired?
Some middle school students have too much homework after school. They have no time to relax. They have no weekends. They are stressed out. Students have too much pressure.
4.When you are stressed out, what should you do?

Good food and exercise help you to study better.
Do you think you should take some medicine?
5.《本草纲目》——Chinese medicine. (herbs)
book
李时珍
traditional Chinese doctor.
(tofu)
yang yin
He believes we need a balance of yin and yang.
lose/ keep balance
When you don’t have a balance of yin and yang, you may get weak and tired.
Some one have too much yang, they are too stressed out and angry. They should eat some tofu.
Chinese medicine is popular in western countries.
America, France, Europe...
We should eat right food. Don’t eat too much yin food. Don’t eat too much yang food. We need a balanced diet.
6.Everybody gets tired sometimes.
You don’t need to see a doctor, you need good food, to relax yourself, to sleep well, to do some exercise. You need a healthy lifestyle.
1.other healthy food
e.g.give me your other hand.
Some books are new, the others are old.
other books

2.balance/ balanced
We need a balanced diet.
We need a balance of diet.
You should balance your study and hobby.
the balance of nature
3.
e.g.The man is 80 now, but he doesn’t have too many health problems.
I’m not busy today, I don’t have too much work to do.
The car runs much too fast.
Beijing is much too far from here.
4.
It’s + adj. + (for sb.) + to do sth.
形式主语:
We find it important to have good habits.
5.Everybody gets tired.
复合不定代词,被看作单数。(somebody,something,anything,anybody,anyone,nothing,nobody...)
Somebody likes shopping in Hong Kong.