高中英语：Unit 2 Healthy eating阅读为主的学案 7页

阅读为主的学案 ‎ (课前导学）‎ ‎→Step 1 Revision ‎1. Check the homework exercises.‎ ‎2. Ask some students to talk about problems with diet, balanced diet and nutrition.‎ ‎→Step 2 Reading and finding Get students to read through Warming Up, Pre-reading, Reading and Comprehending to underline all the new words and useful expressions or collocations in these parts.‎ Collocations: have to, a healthy diet, in different ways, energy-giving food, body-building food, protective food, a balanced diet, sit in his empty restaurant, feel very frustrated, a very strange morning, prepare his menu, by lunchtime, by now, ought to, be full of, be made of, Nothing could be better. , hurry by, follow sb. into. . . , lose weight, be fit, be amazed at, more than, a good meal, get away with, had better, do some research, too much, even though, energy-giving food, feel more hopeful, win. . . back, be on Read them aloud and copy them down in the exercise book after class.‎ ‎（课中学习方案）‎ ‎→Step 3 Practice for useful words and expressions ‎1. Turn to Page 12. Go through the exercises in Discovering useful words and expressions with students and make sure they know what to do.‎ ‎2. Give them several minutes to finish the exercises. They first do them individually, then discuss and check them with their partner.‎ ‎3. Check the answers with the whole class and explain the problems they meet where necessary.‎ ‎→Step 4 Studying important language points ‎1. Everybody has to eat, but do you eat a healthy diet?‎ 每个人都得吃东西, 不过你的饮食健康吗？‎ diet ‎1)n.  sort of food that is usually eaten(by a person, community, etc. )（某人、共同生活的人等）通常吃的食物; 日常饮食limited variety or amount of food that a person is allowed to eat限定的食物种类或数量; 限定食谱 Too rich a diet is not good for you.‎ 吃太多油腻的食物对你身体不好。‎ to be/go/put sb. on a diet 节食; 限定某人的食物 He began his diet a week ago.‎ 他在一星期前开始节食。‎ People who are on a diet mustn’t have chocolate.‎ 正在节食的人不能吃巧克力。‎ ‎2)vt. & vi. (be allowed to)eat only some foods or a little food, esp. to lose weight节食 The doctor has dieted the patient strictly.‎ 医生严格规定病人的饮食。‎ No sugar in my coffee, please; I’m dieting.‎ 请不要给我的咖啡放糖, 我在节食。‎ ‎【辨析】diet & food diet指的是日常饮食或限定的食物, 尤指维持健康的定量或定质的食物, 通常为可数名词; food是一般用语, 凡能吃能喝的具有营养的东西都可称为food, 通常为不可数名词, 但涉及食物的种类时可用作可数名词。‎ Fill in the blanks with diet or food.‎ ‎(1)The doctor has ordered me a special ______________.‎ 医生给我安排了特殊的饮食。‎ ‎(2)We must have ______________ to eat and clothes to wear.‎ 我们必须有东西吃, 有衣服穿。‎ ‎(3)The sick man must not go without ______________, but he must have a ______________ without sugar.‎ 这个病人不吃东西不行, 但不能吃含糖的东西。‎ Suggested answers: (1)diet　(2)food　(3)food; diet ‎2. What will happen to you if you don’t eat a balanced diet?‎ 要是你不平衡饮食, 会发生什么呢？‎ balance ‎1)n. instrument used for weighing天平; 秤even distribution; steadiness平衡; 平稳 The child couldn’t keep his balance on his new bicycle.‎ 孩子骑在他的新自行车上不能保持平衡。‎ He lost his balance and fell over.‎ 他失去平衡, 跌倒了。‎ The growth of the new political party upset the balance of power.‎ 新政党的壮大打破了力量的均势。‎ ‎2)vt. & vi.  keep or put sth. in a state of balance保持平衡 How long can you balance on one foot?‎ 你能单脚站立多久？‎ You have to balance the advantages of living downtown against the disadvantages.‎ 你必须权衡住在市中心的利弊。‎ 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。‎ ‎3)balanced adj. keeping or showing a balance（通常作定语）保持平衡的; 显示平衡的 a balanced diet均衡饮食 a balanced state of mind内心的平衡 ‎【拓展】‎ in the balance（命运）未定, 在危急中; 不确定 Though her life was in the balance, she thought only of the safety of her fellows.‎ 尽管她生命危急, 但她一心只想着她伙伴们的安全。‎ off balance不稳 on balance总的来说 Their suggestion has, on balance, proved practicable.‎ 总的说来, 他们的建议已被证明是可行的。‎ ‎3. Wang Peng sat in his empty restaurant feeling very frustrated.‎ 王鹏坐在他那空荡荡的餐馆里, 感到很沮丧。‎ feeling very frustrated是现在分词短语, 在句子中作状语, 表示伴随情况。例如:‎ She sat on the chair reading a newspaper.‎ 她坐在椅子上, 在读报。‎ Pretending to look frightened, I backed towards the door.‎ 我装出害怕的样子, 退到门口。‎ 另外, 现在分词短语作状语, 还可表示时间、原因、结果等。例如:‎ Walking in the street, she met her old friend.‎ 她走在街上的时候, 遇到一位老朋友。（表时间）‎ Seeing no body at home, she decided to eat outside.‎ 她看到家里没人, 决定出去吃。（表原因）‎ The child fell, striking his head against the ground.‎ 孩子跌倒了, 头撞在地板上。（表结果）‎ ‎【拓展】frustrating令人沮丧的 It’s frustrating to have to wait so long.‎ 等待这么长时间真让人心烦。　‎ ‎4. By now his restaurant ought to be full of people.‎ 到了这个时候, 他的餐馆本该宾客盈门的。‎ ought to=should ‎1)to show a moral duty （表示一种道义上的责任）应该; 应当 She ought to look after her child better.‎ 她应该把孩子照顾得更好。‎ You ought to study hard to get a high mark.‎ 你应该刻苦学习, 以取得好的成绩。‎ ‎2)ought to have done 表示本应该……, 而却没有……‎ You ought to have come yesterday.‎ 你本应该昨天来的。‎ You ought not to have stayed with her.‎ 你本来不应该和她在一起的。‎ be full of=be filled with充满 He was full of curiosity.‎ 他的心里充满了好奇。‎ The house on fire was full of heavy smoke and shouting.‎ 着火的房子里充满了浓烟和喊叫声。‎ ‎5. He thought of his mutton, beef and bacon cooked in the hottest, finest oil.‎ 他想起了他用滚烫的精制油烹制的羊肉（串）、牛排和熏咸肉。‎ cooked in the hottest, finest oil是过去分词短语, 作后置定语, 表被动, 相当于定语从句which were cooked in the hottest, finest oil。例如:‎ The flowers picked by him are very beautiful.‎ 他摘的鲜花非常漂亮。‎ ‎6. Nothing could be better.‎ 再没有比这些更好（吃）的了。‎ 这句话相当于“All his food could be the best. ”。比较级的否定形式, 实际上表示的是最高级的含义。例如:‎ I have never seen a better film.‎ 我从没看过更好的电影。‎ Nobody loved money better than he did.‎ 没有人比他更爱财。‎ I think nothing is more pleasant than traveling.‎ 我想没有什么比旅行更令人愉快的了。‎ ‎7. Suddenly he saw his friend Li Chang hurrying by.‎ 突然, 他看到自己的朋友李昌匆匆走过。‎ see, hear, notice, watch, feel等动词后面的宾语补足语可以是不带to的动词不定式, 也可以是现在分词, 但两者的含义不完全相同, 前者着重叙述事实的经过, 后者着重强调偶然察觉到的一个正在进行的动作。例如:‎ I saw him put everything in his bag and go out.‎ 我看见他把所有的东西都装进了口袋, 走了出去。‎ I saw him putting something in his bag.‎ 我看见他正向口袋里装东西。‎ Complete the sentences with the right forms of the verbs given.‎ ‎1)I watched her ______________(step)off the sidewalk, ______________(cross)the road, and ______________(disappear)into the post office.‎ 我看着她走下人行道, 穿过马路, 进了邮局。‎ ‎2)When I glanced out of the window I saw Daisy ______________(cross)the road.‎ 我目光转向窗外, 瞥见戴西正在过马路。‎ Suggested answers: 1)step; cross; disappear　2)crossing ‎（课后学习方案）‎ ‎→Step 5 Using words, expressions and patterns Do Exercises in Using words and expressions on Pages 49-50.‎ The following procedures may be followed:‎ ‎1. Go through the exercises with students and make sure they know what to do.‎ ‎2. Several minutes for students to finish them individually, and then discuss and check them with their partner.‎ ‎3. Check the answers with the whole class.‎ ‎4. If time permits, explain the problems students meet where necessary.‎