Unit 1 People of Achievement Learning about Language 课件-2023-2024学年高中英语人教版（2019）选择性必修第一册

People of Achievement Unit 1 Period 2 Learning About Language ---Build up your vocabulary How was artemisinin discovered? Tu’s team examined over 2,000 old medical texts and evaluated 280,000 plants for their medical properties. They found one medical text suggesting using the extract from sweet wormwood to treat a fever. They tested a collection of dried wormwood leaves. They tried boiling fresh wormwood and using the liquid but this did not work either. They used a lower temperature to draw out the sweet wormwood extract. They tested the medicine on themselves to see if safe. They tested the medicine on malaria patients. The medicine became a standard treatment for malaria. Task 1 _____ cook something in very hot water ________ relating to plants _______ qualities or characteristics of something _____ a kind of substance that flows freely, such as water or milk _________ physical material that exists boil botanical property liquid substance Task 2 Write down the word that matches each definition. Task 3 Find the sentences contaning these words in the text. P2L8 ..., and decided to review ancient Chinese medical texts to find traditional botanical treatments for the disease. P3L3 They then tried boiling fresh wormwood, and using the liquid obtained from this to treat malaria, but this did not work either. P2L9 Her team examined over 2,000 old medical texts, and evaluated 280,000 plants for their medical properties. P3L7 She concluded that boiling the sweet wormwood apparently destroyed its medical properties. P3L9 Using a lower temperature to draw out the extract,she found a substance that worked. Task 4 Finish the text by using the words in activity 1. Tu Youyou and her team first tried ________ sweet wormwood and used the _________ obtained, only to find it didn’t work since its medical __________ were destroyed. It was not until she used a lower temperature that the ________ named artemisinin, a ________ treatment for malaria, was successfully extracted. boiling liquid properties substance botanical Task 5 Guess the meaning of the underlined words, Then fill in the blanks with words that have the same roots. 1. The two flowers are quite distinct from one another, so it is easy to make a __________ between them. 2. Scientists need to ________ how the new material stands up to wear and tear to prove how valuable it is. 3. A talented scientist well known for his __________ to his country, Huang Danian committed himself to his research in geophysics. 4. A: Did you come to any conclusions? B: Yes, we _________ that by drawing out the extract at a low temperature, we could find the substance that we needed to complete the experiment. 5. She spends a lot of time ___________ her patients’ dreams. This analysis is very helpful, explaining their daily behaviour very well. distinction evaluate commitment concluded analysing adj. adj. v. n. n. Task 6 distinct distinctive distinguish distinction indistinct adj.有区别的 n.区别;区分 adj.清楚的 adj.模糊不清的 v.区分 adj.独特的;特别的 派生法——derivation / affixation 前缀——prefix 后缀——suffix Task 6 commit commission committed commitment vt.承诺;保证 adj.坚定的 vi.忠于;全心全意投入 n.承诺;奉献 n.委员会;佣金;正式委托 派生法——derivation / affixation 前缀——prefix 后缀——suffix Task 6 conclude concluding conclusion conclusive v.得出结论 n.结论 adj.结论性的 adj.最后的;结尾的 派生法——derivation / affixation 前缀——prefix 后缀——suffix Task 6 value valuable evaluate evaluation v.重视; 给...估价 vt.评估;评价 n.评价;估计 adj.有价值的 派生法——derivation / affixation 前缀——prefix 后缀——suffix invaluable valueless adj.极有用的;极宝贵的 adj.没有价值的;不值钱的 n.价值 Task 6 analyse analyser analysis analytical vt.分析 n.分析 adj.善于分析的 adj.分析仪;分析者 派生法——derivation / affixation 前缀——prefix 后缀——suffix Task 7 Read the passage about Lu Xun. Fill in the blanks with the correct forms of the words in the box. insist, obtain, objective, acknowledge, apparently, crucial Lu Xun, ___________ as one of the greatest mordern writers in China, was born in Shaoxing, Zhejiang Province in 1881. In 1904, he went to Japan and became a medical student, with the ________ of improving people’s health and saving lives. However, he changed his mind when he saw in a photo a Chinese man about to be killed by a Japanese soldier. It struck him that the other Chinese men in the photo _________ did not care about what was happening to their fellow countrymen. acknowledged objective apparently Task 7 Read the passage about Lu Xun. Fill in the blanks with the correct forms of the words in the box. insist, obtain, objective, acknowledge, apparently, crucial From this, he concluded that the ______ problem in China was not physical illness, but the spiritual illness of people at that time. Following this, he quit medical school. When he returned to China in 1908, he ________ a teaching job. In 1917, a friend ________ that he help write for a magazine called New Youth. That was how his first famous short story A Madman’s Diary got published. crucial obtained insisted Task 8 Read again and try to answer the questions. 1.What was Lu Xun’s original objective? 2.What made him change his mind? 3.What’s the problem in China? Improve people’s health and save lives. He saw in a photo a Chinese man about to be killed by a Japanese soldier and it struck him that the other Chinese men in the photo apparently did not care about what was happening to their fellow countrymen. The spiritual illness of people at that time. $$