人教版高中英语必修三unit2教案

Unit 2. Healthy EatingTeaching aims and demands:1.Topics:Problems with diet ;Balanced diet and nutrition2.Words and expressions3.Functions:1)Suggestions and adviceYou must /must not… ; What should I do?I think you ought to …; I suppose you had better…Perhaps you should…Do you think you could give me some advice?2)Seeing doctorsWhat’s the matter? What’s wrong?What seems to be the trouble?How long have you been like this?3)Agreement and disagreement.I don’t agree. Of cause not. I don’t think so.All right. That’s a good idea.No problem. Certainly /sureYes, I think so. I’m afraid not.4. Grammar: The use of ought toYou ought to cook fresh vegetables and meat without too much fat If you want to stay slim.You ought not to eat the same kind of food at every meal.Period 1Vocabulary重点词汇1. balance n. 天平，平衡；余额，余数v. 平衡；权衡balanced adj. 均衡的[典例]1). Try to achieve a better balance between work and play. 争取把工作和娱乐更好地结合起来。

2). I must check my bank balance (= find out how much money I have in my account).我要核对一下我在银行的余额（看我的帐户上有多少钱）。

3). Try to balance your diet by eating more fruit and less protein. 多吃些水果, 少摄入些蛋白质, 使饮食均衡合理。

[重点用法]a balanced diet 均衡的饮食keep the balance of nature保持生态平衡keep one’ s balance保持平衡lose one’ s balance (= be out of balance) 失去平衡[练习] 用balance短语填空或翻译。

1). He ______ ______ ______ and hurt himself when he went upstairs.2). It is difficult to for you to ______ ______ _______ on an icy pavement.3). 我们必须权衡利弊才做出决定。

___________________________________________________________ _____________________________Keys: 1). lost his balance 2). keep your balance 3). We must balance the advantages against the disadvantages before we decide.2. curiosity n. 好奇心curious adj. 好奇的curiously adv. 好奇地[典例]1). Children have a natural curiosity about the world around them. 小孩子对他们周围的世界有着天生的好奇心。

2). I opened the packet just to satisfy my curiosity. 我打开包裹只是为了满足我的好奇心。

[重点用法]out of curiosity 出于好奇with curiosity = curiously好奇地be curious about sth. 对某事好奇be curious to do sth. 好奇地做某事[练习] 用curiousity的短语或其适当形式填空。

1). Margaret looked at him _______ _______.2). She decided to try a cigarette _______ _______ _______.3). All the employees in this firm _______ _______ ______ the personallife of the general manager.4). ________ enough, he had never seen the little girl.3). ________ drove Mary to open her husband’ s letter though she knew itwas wrong.Keys: 1). with curiosity 2). out of curiosity 3). are curious about 4). Curiously 5). Curiosity3. limit vt. 限制；限定n. 界限；限度limited adj. 有限的limitless adj. 无限制的[典例]1). The speed limit on this road is 70 mph. 这条路的车速限制是每小时70英里。

2). We must try and limit our expenditure. 我们必须设法限制我们的开支。

3). There’ s a limit to how much I’ m prepared to spend. 我准备花多少钱是有限度的。

[短语归纳] limit短语：limit sb./sth. to... 限制某人/某事到某种程度put a limit on... 对……限制there is a limit to对……是有限的without limit 无限地，无限制地[练习] 用limit的短语或其适当形式填空。

1). One’s energy is ______.2). ______ ______ ______ ______ (没有止境) what you can do if you try.3). We must _______ our weekly expenditure ______ ten pounds.4). Only a _______ number of places are available.Keys: 1). limited 2). There’ s no limit to3). limit; to 4). limited4. benefit vt. 有益于vi. 得益于（常与from, by连用）n. 利益，好处；津贴1). The rain benefits the plants. = The plants benefit from the rain. 这场雨有益于植物。

2). This dictionary will be of great benefit to me. 这本字典将对我有很大的好处。

3). He said he would starve rather than beg for food. 他说他宁愿挨饿也不要饭吃。

4). The enemy is trying to starve us to death. 敌人正在企图饿死我们。

[重点用法]be of great benefit to = be very beneficial to 对……有益for the benefit of = for sb’ s benefit为了……的利益benefit from 从……中受益[练习] 用benefit或其短语的适当形式填空。

1). The new highway will ________ the villagers.2). He will _________ the new way of studying.3). The warning sign was put there _________ the public.Keys: 1). benefit 2). benefit from 3). for the benefit of5. combine vt.&vi. (使)联合；结合combination n. 联合；结合combined adj. 联合起来的[典例]1). We can’t always combine work with pleasure. 我们并不总是能在工作中享受到乐趣。

2). Circumstances have combined to ruin our plans for a holiday. 各种情况凑在一起破坏了我们的假日计划。

[短语归纳] combine的短语：combine with sb./ sth. 与某人某物结合起来combine together联合起来combine A with/and B 使A与B联合起来[练习] 用combine的短语或其适当形式填空。

1) A _______ of factors led to her decision to resign.2) Success was achieved by the _______ efforts of the whole team.3) As a writer, he _______ wit _______ passion.Keys: 1). combination 2). combined 3). combined; and/with重点词组1. be tired of = be fed up with = be sick of 对……厌烦了[典例]1). We are fired of hearing the old story. 这老话我们听厌了。