高中英语：unit2 Healthy eating学案-3（新人教必修3）

Unit2Teaching PeriodP 3 TopicHealthy eatingStyleLearning about languageAims1. Useful words and expressions.2. Useful structures.Step 1. Words and expressions 1. P12 Exx1,2 2. P12 Ex3 Pronunciation/the odd one1 ea [i:] ear [e] (fat and fruit) 3 u [] u[u] meat and energy-giving food 3 a[ei] a [] (vegetable and meat 4 e [e] e[] vegetable and fruitStep 2. Speaking Sample dialogue for P12 Ex4S1: What’s your favourite food? I’m really fond of roast duck.S2: My favourite food is roast mutton and cold vinegar fish.S1: What do you hate?S2: I really hate spicy food. It upsets my stomach and makes me feel ill.S1: I’m sorry to hear that! I can’t stand boiled eggs myself.S2: Really! I love them. If you eat boiled eggs with smoked chicken and cucumber salad, they taste delicious.S1: I don’t often eat chicken although I know it has low fat and you won’t gain weight.S2: Are you worried about gaining weight too? That’s why I’ve stopped eating fried food. It’s really sad because I love fried eggplant with fried chicken.S1: Never mind. It’ll be worth it when you’re elegant and thin.S2: I hope so.Step 3 Useful structures. MeaningSentences in the textIntention12Duty12PermissionPossibility123456Guessing1Ability12Modal verbs1. can 与 could：1）表能力或可能性；2）表请求或许可; 3）表推测。Anybody can make mistakes. （possibility）You can use my pen. (permission)用心 爱心 专心I can speak Japanese well. (ability)Could you help me? (request)He can’t be at home now. I called him just now, but nobody answered the phone.比较can 和be able to 1 ）can/could 表示能力；可能, 只用于现在式和过去式（could）。be able to可以用于各种时态。例如： They will be able to tell you the news soon. 他很快就能告诉你消息了。2 ）只用be able to的情...