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高三英语Unit4 Green world重难点解析1.classify vt.编排；分类The books in the library are classified by subject.图书馆的书是按照科目分类的。
classify sb./ sth.（as sth.）将某人/某物归类Would you classify her novels as serious literature or as mere entertainment?你认为她的小说属于文学类呢，还是属于通俗读物类？classified（常作定语）分类的a classified directory分类簿classified advertisements分类广告2.procedure n.程序（尤指工商、法律、政治等事务的）Stop arguing about （questions of） procedure and let’s get down to business.别再为程序（问题）争辩了，咱们着手议正事吧。
procedure （for sth.）手续；步骤What’s the procedure for opening a bank account?在银行开个账户要办什么手续？3.group v.集合，使成群；类集The children grouped round the piano.孩子们集合在钢琴周围。
We can group animals into several types.我们可以把动物分成好几类。
（1）群；组；类family,team,audience,enemy,group,class等集合名词作主语时，若看作一个整体，谓语动词用单数形式；若强调各个成员，谓语动词用复数形式。
Our group is going to climb a mountain tomorrow.我们组明天要去爬山。
The group are having dinner now.组员们正在吃晚饭。
高三英语Unit 4 Green World人教版【同步教育信息】一. 本周教学内容Unit 4 Green World二. 重点、难点了解植物的开展知识，复习非谓语动词作状语和作定语的用法。
三. 具体内容1. Many young men in his position would lead a cosy life, but young Banks had an appetite for knowledge.have an appetite for: have a desire fore.gHe has an amazing appetite for hard work.2. From behind his desk, however, he was involved in enterprises such as the exploration of Africa and the settlement of Auatralia.involve sb/sth in sth/doing sth: cause sb.to take part in or intoeg.Don’t involve me in solving your problem!He was involved in a heated argument.3. In growing strawberries Banks went back to the abandoned practice of spreading straw …4. Mendel’s attraction to research was based on his love of nature.base sth. on sth.: use sth as grounds, evidence for sth elseeg.I base my hopes on the good news we had yesteday.base sb in/at…: place sb in〔a place from which to work and travel〕eg.Most of our staff are based in Paris.5. And this area is becoming smaller day by day. = And this area is becoming smaller every day.year byyearyear after yeareg.My son grows higher and higher year by year.I get his Christmas card year after year.6. Change sub－clause into non－finite〔1〕non－finites to be adverbiala. If you see the film, you should finish you homework first.b.When you read that book, you will find it worth reading.c. If it is seen above, the river looks like a huge dragon.d. After she had finished the experiment, she went home.e. Although he has been told many times, he still does not know what to do.f. When he stood on the top, we felt nervous.g. Because Tom was praised at the meeting, his parents felt happy.h. When the meeting was over, they poured out of the hall.i. If weather permits, we will go for an outing.j. Because the meeting is important, we should all attend it.k. Because he is being operated on, he can’t answer the phone.〔2〕Non-finites to be subjecta. That he will work in China is his wish.b. That Tom often works with the workers makes them regard him as a true friend.〔3〕Non-finites to be attributiveThe streeta. which will be repaired leads to our school.b. which is being repaired.c. which has been repairedd. which was repaired【典型例题】[例1] She was the only one ______ the ship wreck.A. survivingB. having survivedC. to surviveD. survived答案：C解析：动词不定式作后置定语修饰the only one。
Unit 4 Green worldREADINGTHE BIRTH OF A SCIENCEBefore the eighteenth century, botany was merely a branch of medicine. Until then, mostly doctors and surgeons studied herbs. Attempts had been made by others to classify plant species into groups, but the breakthrough came with the work of Carl Linnaeus. Showing how plants were related was a complex and strange thing before Linnaeus developed his system. The idea to give each species two names was not new, but names were not truly fixed and accepted. Some scientists classified plants into herbs and trees, or according to the shape of the fruit, or whether they had flowers or not. But Linnaeus’s idea of grouping plants in families was unique. In his system the identification of different species was based on the arrangement of the male and female organs in the flowers. As a result, fruits such as peaches and pears are in fact related, although they are different at first sight.Linnaeus’ system soon conquered the world. In 1759, Linnaeus student, Daniel Soland er, travelled to England to promote the new system. In London, Solander developed a lifelong friendship with Joseph Banks, who would later ask him to join his team of botanical explorers on the Endeavour in 1768.Born into a life of privilege, Joseph Banks was the son of a wealthy family. When his father died in 1761, Banks was only eighteen years old. Many young men in his position would lead a cosy life, but young Banks had an appetite for knowledge. Despite his wealth, he worked to make a career in science. He made a first journey to study wild plants in 1766. His next expedition was the great voyage with James Cook to Oceania. In 1768, the Royal Navy appointed James Cook as the commander of the Endeavour to take members of the Royal Society on an expedition to Tahiti. According to the instructions given to Captain Cook, the expedition had three goals. The primary goal was to study the passing of the planet Venus across the sun. this would give astronomers a chance to calculate the distance between the earth and the sun. secondly, the purpose of the expedition was to record, classify and describe all plant and animal life observed during the trip. Thirdly, Captain Cook received secret instructions to search for an unknown southern continent.As astronomy was one of the most important branches of science, it was the British government that paid for all the equipment and expenses for that part of the expedition. Since the government would not pay for such a new field of science as botany, Joseph Banks, at the age of 25, had to supply about ￡10,000 of his own money to equip the expedition.On their three-year voyage, Joseph Banks not only studied and described new plants he found, but also looked out for new economic species: plants that could be grown in England or other parts of the world to produce crops that could be sold. Banks was the first to move crops from one continent to another on a large scale, helping to develop local economies with these new imports. Some plants that were spread over the globe in this way include cocoa, hemp and tea.The Endeavour returned to England in 1771. The voyage had been a great success. Wonderful discoveries and been made of strange new lands, cultures, animals and plants. After that Captain Cook made two more voyages around the world, but Joseph Banks never undertook another. From behind his desk, however, he was involved in enterprises such as the exploration of Africa and the settlement of Australia. In 1778, Banks was elected president of the Royal Society, a position he held for 42 years. During these years Banks helped to develop the royal gardens at Kew into one of the greatest botanical gardens in the world. He accumulated a great deal of knowledge about plants and agriculture. In growing strawberries Banks went back to the abandoned practice of spreading straw under the fruit to reduce the necessary amount of watering. He also built a greenhouse to experiment with growing pineapples. It was Joseph Banks who made Kew a centre of scientific and economic research.INTEGRA TING SKILLSReadingWILDLIFE AND GARDEN ROSESIn his youth Charles Darwin enjoyed all the freedom to experiment and do where he liked. The study of physics, chemistry, and later botany, was his hobby. At the age of 22, Darwin was invited to join the scientific expedition on the Beagle. During its five-year voyage, the Beagle followed almost the same route as Cook’s Endeavour sixty years earlier. Darwin’s observations on that voyage led him to write his famous book On the Origin of Species.It was Darwi n’s visit on the Beagle to the Galapagos Isles that gave him the key to his new theory. Darwin soon realized that the wildlife of the Galapagos Isles was very curious and deserved special the species of the different island; yet all showed a clear relationship with those of America, though separated from that continent by about 600 miles. Darwin counted 225 flowering plants, of which he collected and brought home 193. Of these, 100 were new species which are only found in the Galapagos islands. Altogether the group of islands formed a little world within itself.Darwin first understood the development of different plant species from developments in bird species that he observed in Galapagos. He found 13 kinds of finches, related to each other in the structure of their beaks, tails, shape of body and colour of their feathers. The most curious fact was the differences in the size of the beaks. This could only be explained by the differences in habitat and source of food. The birds with broad beaks would eat hard seeds, while the birds with smaller beaks would eat soft seeds or insects. Back home, in England, Darwin realised that differences in habitat could lead to different species in birds as well as in plants. He had found the key to explaining differences between species.During the 1840s and 1850s Gregor Mendel conducted his experiments with flowers and peas. Mendel’s attraction to research was based on his love of nature. Although his experiments were designed to support the ideas concerning the influence of environment upon plants, he found that many characteristics were passed on from one generation to the next, without influence by the environment. His research gave birth to the science of genetics.As a result of Darwin and Mendel’s research, scientists of the nineteenth century formed the belief that the influence of the environment was behind the development of new species. Still both Darwin and Mendel observed that within species, different varieties could occur. Darwin studied many varieties of garden roses. It would take a next generation of scientists to bring the importance of the environment on species back view.In 1922, Gote Turesson found evidence for the existence of table varieties within species in nature. He showed that differences between plants of one species occurred as a result of the environmental conditions in their habitat. He made his discoveries by studying a wild plant found on the Swedish west coast. When growing on rocks, the plant grows to a bush, having broad leaves and large flowers. However, when growing on sand, the plant grows close to the ground, having narrow leaves and small flowers. If plants from on habitat were moved to the other type of habitat, they changed their appearance and adapted to the new environment.The research by Darwin, Mendel and Turesson shows that both genetics and the environment are important to plants. For the improvement of crops Mendel’s genetics were long considered the most important. However, Turesson’s findings show that habitat, such as soil c onditions, is of equal importance to the output of crops.。
Unit4GreenWord教案学案一体化（教师版）（人教版高三英语上册教案教学设计）高三英语备课组主备：谢琴一、Teaching aims:Grasp the following words, phrases and sentences:Ⅰ. 重点单词procedure bunch merely classify promote appetite appoint calculate expense involve settlement accumulate abandon tone reward technician nowhere altogether latter distinguished appearanceⅡ. 重点短语look out for, on a large scale, year after year, pass away, name after, in detail, a bunch of, be suitable to, have…in common, belong to, a branch of, classify…into, base…on…, according to, have an appetite for, appoint…as…, lead a cosy life, be involved in, at one’s own expresses, give birth toⅢ. 重要句型:1．Attempts had been made by others to classify plant species into groups, but the breakthrough came with the work of Carl Linnaeus.2．Showing how plants were related was a complex and strangething before Linnaeus developed his system.3．Born into a life of privilege, Joseph Banks was the son ofa wealthy family.4. As astronomy was one of the most important branches of science, it was the British government that paid for all the equipment and expenses for that part of the expedition.5. Despite his wealth, he worked to make a career in science.6. On their three-year voyage, Joseph Banks did not only study and describe new plants he found, but also look out for new economic species; plants that could be grown in England or other parts of the world to produce crops that could be sold .7. It was Darwin’s visit on the Beagle to the Galapagos Isles that gave him the key to his new theory.二、Teaching periods：FourPeriod I Word Study1. procedure n.1) 程序;手续;步骤，工序；[U][C]The chairman was quite familiar with the procedure for conducting a meeting.主席对开会的程序很熟悉。
Unit 4 Green WorldPeriod 1Words and Expressions1. procedure n. 1). 过程, 步骤2). 程序, 手续;procedure in production 生产过程break the normal procedure 打破常规They followed the usual procedure. 他们遵循通常的程序。
2. merely adv = no more than = only 仅仅；只不过They are not merely content to fill the stomach.他们不仅仅满足于填饱肚子。
You don't have to be angry. He merely wanted to know the truth."你不必太生气了,他只不过是想知道点事实真相。
"mere adj 仅仅的；只不过的A mere child cannot do the work of a man.仅仅是个孩子是不能做成人工作的。
3. classify vt. 分类; 编排classify books by subjects4. promote vt.1). 促进, 发扬promote growth [prosperity, understanding] 促进增长[繁荣, 了解] 2). 提升（常与to连用）Our teacher has been promoted to headmaster. 我们的老师已被提升为校长了。
The young army officer was promoted (to the rank of) captain.那个年轻的陆军军官已被提升为上尉。
3). 促销(商品等)Do you have any idea how to promote the sales of this product?如何来推销这种产品你有什么好办法吗?5. appetite n1). 食欲；胃口lose one's appetite 食欲不振have a good appetite. 胃口好。
