Unit 2 A Pioneer For All People探究案 编号2.doc

高一英语必修四学案 Class _ Name _ No. _Unit 2 A Pioneer For All People (课内探究案)命题人：范夕周 审核：代永美 时间: 2012-04-24Learning aims:1. To grasp the main idea and the structure of the whole passage.2. To improve reading ability and get useful information according to the text.3. To learn something from Dr. Yuan and have our own dreams in life.自主学习I. Fast readingRead the text silently and then do the exercises.1. Which of the following statements tells the main idea of the text? It s about_.A. a farmer named Yuan Longping B. how Yuan Longping became rich and famousC. an agricultural pioneer named Yuan Longping who worked hard to produce a new strain of rice D. a new strain of rice which is called super hybrid rice 2. Match the following ideas with the right paragraphs.Para1 A. Dr Yuans dreams. Para2 B. Dr Yuans personality. Para3 C. Dr Yuans biography. Para4 D. Dr Yuans appearance and his achievementII. Careful readingRead the passage carefully and finish the following activities.Para. 1 Dr Yuans appearance and his achievement:Q1: What does Dr Yuan look like? (sunburnt; farmer/scientist)_Q2: What is his achievement? (what is called; make it possible)_Para. 2 His biography(life experience):TimeInformation1930_in Beijing1953_from collegeas a young man_ was a great problem.saw the great _for increasing the rice_.in a recent harvest200 million tons was _now_his knowledgePara. 3 Dr Yuans personality:1) Which of the following description about Dr Yuans personality is not true? ( )A. He is satisfied with his life because he is now rich and famous.B. He cares little about money and fame.C. He would rather work than lead a comfortable life.D. He enjoys a simpler life than most rich and famous people.2) His hobbies : 1. _ 2. _ 3. _ 4. _Para. 4 Dr. Yuans dreams:1) The first dream: To produce a kind of rice _plants: as tall as _ear: as big as a _grain: as huge as a _2) The second dream: To _ it can be grown all over the world精讲点拨1. Using his hybrid rice, farmers are producing harvests twice as large as before.Translation: _.本句中_ 是表示倍数的一种句型，意为“是的两倍”。The new bridge is _ _ _ _ _ the old one.这座新桥是旧桥三倍长。【归纳拓展】 常用倍数的表达法： A is +倍数+as+adj.+as BA is +倍数+比较级+than BA is +倍数+the+名词(size, length, width, height, weight等)+of BA is+倍数+what-clauseEg. My flat is three times _/_/_ his.The production now is twice _ it was 10 years ago.合作探究Discussion: How to solve hunger?In my opinion, we can rid the world of hunger by1. making good use of _2. developing _3. improving _4. preventing _5. inventing _当堂检测Complete the passage according to the text. Yuan Long ping, who grows what is called 1._ hybrid rice, was born into a poor farmers family in 1930. When he was young he found hunger was a 2._ problem in many parts of the countryside. So he searched for a way to increase rice harvests without 3._ the area of the fields. In 1974, he became the first agricultural pioneer in the world to grow rice that has a high 4. _. This special strain of rice makes it possible to produce one-third more of the crop in the same fields. 5._ his research, the UN has more tools in the 6._ to rid the world of hunger. Yuan Longping is quite 7._ with his life. He feels being