Unit 2 : Healthy eatingwriting: write an ad for a restaurantUnderstanding of the teaching material(教材分析)The teaching plan I m going to talk about is the writing period of Unit2 Healthy Eating taken from NSEFC BOOK3. This unit mainly talks about healthy eating, problems with diet and balanced diet and nutrition. This writing period is about persuasive writingan advertisement. So this lesson plays an important role in this unit-how to use what Ss learnt in this unit to write an adve