Lead-in Franklin Madame Curie
Lead-in Alexander Fleming Scottish bacteriologist The Nobel Prize in Physiology or Medicine 1945
Main idea Fleming was excited about his discovery, but other scientists showed no interest. Para.1 Para.2 Para.3 Para.4 Para.5 Penicillin played a very important role during World War Ⅱand at present. Fleming discovered a mould that can kill bacteria by accident. Health care in the past was often dangerous and risky. Alexander Fleming invented many ways to treat the wounded during World War I.
Scanning Choose the best answer. 1. Before the discovery of penicillin, medical treatments were ______. • expensive B. effective C. dangerous D. simple C
Scanning 2. Penicillin was discovered in ______. A. 1914 B. 1928 C. 1929 D. 1945 B
Scanning 3. When Fleming saw the mould growing in the jar, he was surprised because ______. • moulds did not usually grow in the jars • he was not looking for it • the mould had stopped growing • the mould had killed the bacteria D
Scanning 4. When Fleming reported his discovery, other scientists ______. • did not believe him • did not care • did not understand him • did not agree with him B
Scanning 5. Penicillin saved many lives in ______. • World War I • World War II • France • England B
Scanning 6. The discovery of penicillin has led to all of the following except ______. • new treatment • safer hospitals • fewer diseases • better health care C
Pair work Which of the characteristics below do you think helped Alexander Fleming discover penicillin?Explain your choices. carefulness willingness intelligence sacrifice interest aggressive perseverance observation sympathy devotion to duty sense of responsibility full of confidence
Writing • Penicillin • is a natural mould that is easy to grow • and use • will make hospitals safer • can cure infections • kills bacteria • can be used to treat diseases
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Understanding When asked about his discovery, Sir Alexander Fleming said: “One sometimes finds what one is not looking for” Had he cleaned his laboratory every night and put all his things away like a good little boy, he never would have discovered penicillin, and half of us would be dead right now.
Note It was not until after the war that he made his most important discovery. 强调句型，“It is / was +被强调部分+ that / who +句子的其他部分”。 He didn’t make his most important discovery until after the war. Not until after the war did he make his most important discovery.
The importance of Fleming’s discovery wasn’t fully recognised until World War II. It was not until World War II that the importance of Fleming’s discovery was fully recognised. Not until World War II was the importance of Fleming’s discovery fully recognised.
Note Many patients suffered deadly infections as a result of operations =because of as a result of as a result result from result in =as a consequence =happen because of =lead to as a result of He left school _____________ his illness. He was ill. __________, he dropped out. Accidents often ___________ carelessness. His angry words ___________ a fight. as a result result from result in
New words mould /muld/ n. 霉；霉菌；气质 risky/`riski/ adj. 危险的；冒险的 incident/`insidnt/ n. 事情；(政治性)事件 significance/sig`nifikns/ n. 意义；意思；重要性 bench/bent/ n. 长凳
sink/sik/ n. 洗涤槽 jar/da:/ n. 口瓶；罐子；坛子 lid/lid/ n. 盖子；眼睑 penicillin/﹑peni`silin/ n.青霉素 devotion/di`vun/ n. 献身；忠心 aggressive / `gresiv/ adj. 有进取心的；过分自信的；侵略的
Careful reading 1. Modern hospitals are clean and safe and doctors can cure many diseases. But it was not always so. For a long time, health care was often dangerous and risky.
Careful reading 2. One day in 1928, Fleming was cleaning up the lab after coming home from a holiday. As he was washing the jars and lids, he saw something strange. In one of the jars, a mould was growing.
Careful reading 3. The existence of the mould did not surprise Fleming, but he also noticed that the bacteria around the mould had died and stopped growing.
Careful reading 4. He was excited about his discovery and wrote about it in 1929, but other scientists did not seem to care. Despite their lack of interest, Fleming kept trying…
Careful reading 5.It was not until World War II that the importance of Fleming’s discovery was fully recognised. The chemical, the “good mould”, saved many lives during the war and has continued to fight diseases ever since.
Homework Continue sharing your discoveries and letters May you succeed some day!