Unit1 Learning about language课件-2022-2023学年高中英语人教版（2019）选择性必修第一册

Unit 1 People of Achievement —Learning about Language Build up your vocabulary Match the word with each definition 1. ________ cook something in very hot water 2. ________ relating to plants 3. ________ qualities or characteristics of something 4. ________ a kind of substance that flows freely, such as water or milk 5. _________ physical material that exists boil botanical properties liquid substance boil botanical liquid n. 液体 chemical substance 化学物质 substance n. 物质，主旨 How was artemisinin discovered? n. 〖C〗特性，特征 Guess the meaning of the underlined words 1. The two flowers are quite 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 it is. 3. A talented scientist well known for his ___________ to his country, Huang Danian __________himself to his research in geophysics. 4. A: Did you come to any ? 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 is very helpful, explaining their daily behaviour very well. distinction evaluate commitment concluded analysing distinct valuable committed conclusion analysis Word formation ---- derivation（派生）: to create a new word by using prefixes（前缀） and suffixex（后缀）. Practice --- blank filling 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 s