Unit 5 Period Four Writing(PPT课件)-【满分思维】2026-2027学年高中英语选择性必修第一册配套课件（外研版）

Period Four Writing 1 单元主题表达 课后习题 2 写观察日记 【写作指导】 观察日记是指把生活中看到的事物记录下来,不论是山川地貌、奇异景观,还是动植物、趣闻场面等。观察日记不同于我们平时书写的普通日记,要掌握相应的写作方法。 单元主题表达 3 (1)观察要善于抓住特点,突出重点。观察事物必须看清楚,看仔细,把特殊地方写具体,才会使人印象深刻。重点是要在抓住特点的基础上有所侧重。有了特点和重点,写作对象就在脑海里了。例如本单元要求写一篇向日葵生长的观察日记,而向日葵的每个生长阶段都有自己的特点和周期,要把这些描述清楚。 (2)观察要有顺序,突出层次。观察顺序主要包括:从上到下、从左到右、从外到里,或先中间再两边等。还是以观察向日葵为例,本文应该按照时间发展顺序进行观察,注意向日葵在每个阶段的不同特点。 单元主题表达 4 【经典例题】 开学之初,英语老师让你们在课堂上汇报假期里做的一件有意义的事情,请根据下面的提示,向同学们汇报你培育黄豆芽(soybean sprout)的过程: 1.用干净的水浸泡黄豆; 2.大约十小时后,黄豆开始变软变大,并且颜色变浅; 3.用湿布覆盖黄豆,并每天换水两到三次; 4.第二天黄豆开始发芽,第四天就差不多可以食用了。 参考词汇:腐烂 go rotten 芽 bud 单元主题表达 5 第一步 思路点拨 单元主题表达 6 第二步 遣词造句 【核心词汇】 1.______________ v. 发生   2.______________ 搜索   3.______________ adj. 质量好的   4.______________ n. 容器   5.______________ v. 扩大,膨胀   occur search for high-quality container expand 单元主题表达 7 6.___________ …with… 用……覆盖……   7.___________________________ 令某人高兴的是   8.______________ 发芽   9.______________ v. 观察   10._____________ adv. 逐渐地   11._____________ n. 过程 cover to one's delight/joy come up observe gradually process 单元主题表达 8 【高级句式】 1.形式主语 One day during the vacation, _________________________________ I could learn to grow some myself.   假期里的一天,我突然想到,我可以学着自己种一些。 2.定语从句 After searching the Internet for the ___________________________________, I began with great interest.   在因特网上搜索了我需要的信息后,我非常感兴趣地开始了。 it suddenly occurred to me that information (which/that) I needed 单元主题表达 9 3.完全倒装 ____________________________________.   以下是我所做和观察到的。 4.with复合结构 First, I kept some high-quality soybeans in a container _____________ __________________.   首先,我把一些优质大豆放在一个装有清水的容器里。 Here is what I did and observed with clean water in it 单元主题表达 10 5.现在分词作状语;独立主格结构 After about ten hours, the soybeans expanded, ______________________ _________, ________________________.   大约十个小时后,大豆膨胀,变软变大,它们的颜色变浅。 6.结果状语从句 The water was changed twice or three times each day __________________________________.   每天换两三次水,这样它们就不会腐烂。 becoming soft and their colour lighter so that they wouldn’t go rotten bigger 单元主题表达 11 7.宾语从句 Try growing some yourself and see _________________________.   试着自己种一些,看看会发生什么。 what will happen 单元主题表达 12 第三步 组句成篇 Hello, everyone! Soybean sprouts are one of my favourite vegetables. One day during the vacation, it suddenly occurred to me that I could learn to grow some myself. After searching the Internet for the information I needed, I began with great interest. Here is what I did and observed. First, I kept some high-quality soybeans in a container with clean water in it. After about ten hours, the soybeans expanded, 单元主题表达 13 becoming soft and bigger, their colour lighter. Then, I covered them with a wet cloth. The following day, to my delight, they began to come up. The buds were growing longer gradually. The water was changed twice or three times each day so that they wouldn’t go rotten. On the fourth day, the buds grew almost long enough to eat. Isn’t it amazing? Try growing some yourself and see what will happen. You will enjoy the process, I believe. That’s all. Thank you. 单元主题表达 【活学活用】 假设今天你妈妈带你去花卉市场看花,让你印象最深刻的是含羞草。它的叶子像绿色的羽毛,花像粉色的小绒球,轻轻一碰,叶子就会闭合。你很喜欢,因此让妈妈买了一盆。请你用英语写一篇日记,记述整个过程。 注意:1.词数80个左右; 2.可以适当增加细节,以使行文连贯。 参考词汇:含羞草 mimosa 绒球 pompom 单元主题表达 15 One possible version: 4th December Sunny Today my mother took me to a flower market, where I enjoyed a variety of flowers (定语从句). Among all the flowers, the one that impressed me most (定语从句) was the mimosa. It seems very small among the tall green plants. The leaves of the mimosa are like green feathers. With small pink flowers shaped like pompoms (with复合结构), the mimosa is like a gentle girl or rather, a little shy girl. 单元主题表达 16 Its leaves are sensitive to people’s touch and when the leaves are touched (时间状语从句), it will close up. That is why it is called “Hanxiucao” in Chinese (表语从句). What fun it is (感叹句)! I loved it so much that I asked my mother to buy one (结果状语从句). I will take good care of it. 单元主题表达 课 后 习 题 18 Ⅰ 阅读理解(每小题2.5分，满分20分) A [2026·重庆两江育才中学高二月考] Making fabric from waste potato plants could offer a more sustainable alternative to pure cotton, as pressure grows on the fashion industry to reduce its environmental impact. Potatoes pose a headache for farmers. The tubers (块茎) are harvested and eaten, but the above-ground plant contains solanine, which is poisonous, so it can’t be used for animal feed. Farmers usually remove this matter before potatoes are harvested.  1 2 3 4 5 6 7 8 课 后 习 题 19 Now, a UK startup company, Fibe, wants to avoid this waste by extracting (提取) fibres from potato stems (茎) to make a sustainable fabric. In April, it introduced the world’s first potato thread (线), a mixture of 75 percent cotton and 25 percent potato fibres. The approach began as a project by a group of design engineering students, including Gal-Shohet, at Imperial College London. Tasked with designing a sustainable business concept, the group investigated using waste plants to create a more sustainable alternative to cotton. The students chose potato plants because 1 2 3 4 5 6 7 8 课 后 习 题 they are mass-produced all over the world, are rich in fibres and their leaves have no other practical use. They turned their idea into a business after graduating in 2022. Fibe primarily uses non-biological process to extract the fibres. “Once raw fibres are extracted, they are cleaned and graded to produce soft balls. The potato fibres are similar in quality to cotton,” says Gal-Shohet. However, because the land is already being used to grow potatoes, potato fibres require 99.7 percent less water and produce 82 percent fewer carbon emissions (排放), as well as 1 2 3 4 5 6 7 8 课 后 习 题 needing no additional land, according to Fibe’s internal analysis. Muhammad Tausif at the University of Leeds, UK, who has worked with Fibe, says industry demand for sustainable fibres is growing, but the company will need to prove its potato fibres have the“length, fineness and strength” to compete with cotton. “For a fibre to be successful and to be made into a product, these are the key factors,” he says. 1 2 3 4 5 6 7 8 课 后 习 题 【文章大意】这是篇说明文。文章介绍了一家英国初创公司Fibe试图通过从土豆茎中提取纤维来制造可持续面料以减少时尚行业的环境影响。 1 2 3 4 5 6 7 8 课 后 习 题 23 ( )1.What do the underlined words “this matter” in Paragraph 2 refer to? A.Pure cotton. B.The poisonous tuber. C.Animal feed. D.The above-ground plant. √ 1 2 3 4 5 6 7 8 课 后 习 题 24 [解析] 词义猜测题。根据文章第二段“The tubers (块茎) are harvested and eaten, but the above-ground plant contains solanine, which is poisonous, so it can’t be used for animal feed. Farmers usually remove this matter before potatoes are harvested.”(块茎被收获并食用,但地上部分的植物含有毒性茄碱,所以不能用作动物饲料。农民通常在土豆收获之前去除它。)可知,农民通常在土豆收获之前去除地上部分的植物。所以this matter指的是“地上的植物”。故选D。 1 2 3 4 5 6 7 8 课 后 习 题 25 ( )2.What does the author intend to do in Paragraph 4? A.Summarize the previous paragraphs. B.Add some background information. C.Provide some advice for the students. D.Introduce a new topic for discussion. √ 1 2 3 4 5 6 7 8 [解析] 推理判断题。根据第四段中的“The approach began as a project by a group of design engineering students, including Gal-Shohet, at Imperial College London. Tasked with designing a sustainable business concept, the group investigated using waste plants to create a more sustainable alternative to cotton. 课 后 习 题 26 The students chose potato plants because they are mass-produced all over the world, are rich in fibres and their leaves have no other practical use. They turned their idea into a business after graduating in 2022.”[这种方法最初是伦敦帝国理工学院的一群设计工程专业学生(包括加尔-肖赫特)的一个项目。该小组的任务是设计一个可持续的商业概念,他们研究了利用废弃植物来创造一种更可持续的棉花替代品。学生们之所以选择土豆植物是因为它们在世界各地大量生产,富含纤维,而且它们的叶子没有其他实际用途。他们在2022年毕业后把自己的想法变成了生意。]可推知,作者写第四段是为了增加一些背景信息。故选B。 1 2 3 4 5 6 7 8 课 后 习 题 27 ( )3.What does Fibe’s internal analysis highlight about using potato fibres? A.Its standard requirements. B.Its environmental advantages. C.Its technical barriers. D.Its wide applications. √ 1 2 3 4 5 6 7 8 课 后 习 题 28 [解析] 细节理解题。根据文章第五段“However, because the land is already being used to grow potatoes, potato fibres require 99.7 percent less water and produce 82 percent fewer carbon emissions (排放)…”[然而,因为土地已经用于种植土豆,所以土豆纤维需要的水(比棉花种植)少99.7%,且产生的碳排放量减少了82%……]可知,分析结果突出了使用土豆纤维的环境优势。故选B。 1 2 3 4 5 6 7 8 课 后 习 题 29 ( )4.What does Tausif expect of Fibe? A.It should demonstrate its fibres’ competitive qualities. B.It should secure business partners as soon as possible. C.It should make a big difference to the fibre industry. D.It should launch appealing products into the market. √ 1 2 3 4 5 6 7 8 课 后 习 题 30 [解析] 推理判断题。根据文章最后一段中“Muhammad Tausif at the University of Leeds, UK, who has worked with Fibe, says industry demand for sustainable fibres is growing, but the company will need to prove its potato fibres have the ‘length, fineness and strength’ to compete with cotton.”(英国利兹大学的穆罕默德•陶西夫曾与Fibe合作,他表示,行业对可持续纤维的需求正在增长,但该公司需要证明其土豆纤维具有“长度、细度和强度”,可以与棉花竞争。)可知,陶西夫期望Fibe能够展示其纤维的竞争力。故选A。 1 2 3 4 5 6 7 8 课 后 习 题 31 B [2026·辽宁大连高二期中] Mammoths, the massive prehistoric ice age cousins of the modern-day elephant, have always been understood to have inhabited parts of British Columbia, but the question of when has always been woolly. Now, a new study from Simon Fraser University has given scientists the clearest picture yet of when the giant mammals (巨型哺乳动物) walked on Vancouver Island. As part of SFU researcher Laura Termes’ PhD and published earlier this month in the Canadian Journal of Earth Sciences, 1 2 3 4 5 6 7 8 课 后 习 题 32 the study examined 32 suspected mammoth samples collected on Vancouver Island. Of those samples, just 16 were considered fit for radiocarbon dating(放射性碳定年法). The youngest sample was found to be around 23,000 years old and the oldest turned out to be beyond the range radiocarbon dating could measure, meaning it was older than 45,000 years. Prior to the study, only two mammoth remains found on Vancouver Island had ever been dated before. Both lived around 21,000 years ago, so this study provides a greater understanding of 1 2 3 4 5 6 7 8 课 后 习 题 when the massive mammals lived in the area. Termes says, “We were expecting similar results to the two samples previously dated, but what we found were mammoths that were much older. It is fantastic that they could be preserved for that long.” Termes says having the support at the Royal BC Museum and the Courtenay and District Museum and Palaeontology Centre allowing access to their collections is invaluable to the study. “This research highlights the important role of museum 1 2 3 4 5 6 7 8 课 后 习 题 collections for understanding how life has evolved and changed in British Columbia’s deep history,” says Victoria Arbour, who works at the Royal BC Museum. “It’s great to see mammoths’ relatives in the Royal BC Museum’s collections in the spotlight through this research.” “Researchers need all the help they can get because while mammoths were enormous, finding complete samples in British Columbia is actually quite rare,” says Termes. 1 2 3 4 5 6 7 8 课 后 习 题 【文章大意】本文是一篇说明文。猛犸象是现代大象的史前冰河时代的表亲,人们一直认为它们居住在不列颠哥伦比亚省的部分地区,但时间问题总是模糊不清。如今,研究人员有了新发现。 1 2 3 4 5 6 7 8 课 后 习 题 36 ( )5.What does the underlined word “woolly” in Paragraph 1 most probably mean? A.Certain.　　　 B.Attractive. C.Confusing. D.Understandable. √ 1 2 3 4 5 6 7 8 课 后 习 题 37 [解析] 词义猜测题。由文章第一段“Mammoths, the massive prehistoric ice age cousins of the modern-day elephant, have always been understood to have inhabited parts of British Columbia, but the question of when has always been woolly. Now, a new study from Simon Fraser University has given scientists the clearest picture yet of when the giant mammals (巨型哺乳动物) walked on Vancouver Island.”可知,关于猛犸象何时在不列颠哥伦比亚省的部分地区生存的问题一直是模糊的,因此woolly在此处表示“令人困惑的”。故选C。 1 2 3 4 5 6 7 8 课 后 习 题 38 ( )6.What can we know about radiocarbon dating according to the text? A.Mammoth remains were not dated by it. B.32 suspected mammoth samples were fit for it. C.It can exactly date the oldest mammoth sample. D.It measures samples no older than 45,000 years. √ 1 2 3 4 5 6 7 8 课 后 习 题 39 [解析] 细节理解题。由文章第三段“The youngest sample was found to be around 23,000 years old and the oldest turned out to be beyond the range radiocarbon dating could measure, meaning it was older than 45,000 years.”可知,通过放射性碳定年法可以测量到的样品最老不会超过45 000年。故选D。 1 2 3 4 5 6 7 8 课 后 习 题 40 ( )7.How does Termes feel about the research results? A.Excited. B.Regretful. C.Worried. D.Calm. [解析] 推理判断题。由文章第五段“Termes says, ‘We were expecting similar results to the two samples previously dated, but what we found were mammoths that were much older. It is fantastic that they could be preserved for that long.’”可知, Termes对研究结果感到非常兴奋,认为猛犸象残骸能够被保存这么长时间是非常了不起的。故 选A。 √ 1 2 3 4 5 6 7 8 课 后 习 题 41 ( )8.Why are museum collections mentioned in the text? A.To discuss a way to popularize local museums. B.To point out the limitations of sampling methods. C.To show complete mammoth samples were enormous. D.To stress research on mammoths calls for joint efforts. √ 1 2 3 4 5 6 7 8 课 后 习 题 42 [解析] 推理判断题。由文章倒数第三段“Termes says having the support at the Royal BC Museum and the Courtenay and District Museum and Palaeontology Centre allowing access to their collections is invaluable to the study.”可知,博物馆的藏品对于这项研究非常重要,而博物馆提供了支持和接触其藏品的机会。因此,博物馆藏品在文章中被提及是为了强调关于猛犸象的研究需要各方的共同努力。故选D。 1 2 3 4 5 6 7 8 课 后 习 题 43 Ⅱ 写作 第一节 应用文写作(满分15分) ［2025·福建宁德高二质检］ 假定你是宁德市某中学校英文报记者李华,你校上周举办了“走进自然,保护动物”的主题活动。请你为此次活动写一篇报道,内容包括: 1.活动时间、地点; 2.活动内容; 3.活动反响。 注意:1.写作词数应为80个左右; 2.可以适当增加细节,以使行文连贯。 课 后 习 题 44 One possible version: Last Sunday, our school hosted an event themed “Embracing nature, protecting animals” at the main auditorium and the nearby park. The event featured a range of activities, including educational presentations on wildlife protection, interactive workshops where students crafted eco-friendly products, and a guided nature walk to observe local plants and animals. Students also participated in a photography contest showcasing the beauty of nature. 课 后 习 题 45 The response from both students and teachers was highly positive, with many expressing a deeper awareness of environmental issues and a commitment to protecting wildlife. Overall, the event successfully inspired active participation in conservation efforts. 课 后 习 题 第二节 读后续写(满分25分) ［2025·辽宁沈阳高二期中］ 阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成 一篇完整的短文。 Andy rode slowly on his way to school, daydreaming about the fishing trip that his father had promised him. He was so busy dreaming about all the fish he would catch that he was unaware of everything else around him. 课 后 习 题 47 He rode along until a strange sound drew him to the present. He came to a stop and looked curiously up to the sky. What he saw shocked and terrified him. A huge swarm (一大群) of bees filled the sky like a black cloud and they seemed to be heading angrily towards him. With no time to waste, Andy sped off in the opposite direction, riding with great speed but without knowing how to escape the swarm. With a rapidly beating heart, he sped down the rough road. As the bees came closer, his panic increased. Andy knew that he was 课 后 习 题 sensitive to bee stings (蜇). The last sting had landed him in hospital and that was only one bee sting! He had been forced to lie in bed for two whole days. Suddenly, his father’s words came to him. “When you are in a tight situation, don’t panic. Use your brain and think your way out of it.” On a nearby hill, he could see smoke waving slowly skywards from the chimney of Nelson’s home. “Bees don’t like smoke,” he thought. “They couldn’t get into the house.” Andy raced towards Nelson’s house, but the bees were gaining ground. 课 后 习 题 Andy knew he could not reach the house in time. He estimated that the bees would catch up with him soon. But he tried his best to keep calm so that he could come up with an idea to escape from the dangerous situation. Suddenly, out of the corner of his eye, he spotted a small dam which was often used by Mr Nelson to irrigate his vegetable garden. 课 后 习 题 注意：续写词数应为150个左右。 Paragraph 1: Without hesitation, Andy jumped off his bike and dived into the cool water. ___________________________________________________________ Paragraph 2: In no time, his mother appeared in front of him. _________________ _______________________________________________________________________ 课 后 习 题 51 One possible version: Without hesitation, Andy jumped off his bike and dived into the cool water. After holding his breath for as long as he could, Andy came up for air and noticed the bees had gone. Dragging himself out of the dam(现在分词作状语), he struggled up the hilly slope and rang the doorbell. Mr Nelson happened to be home and seeing the tired and wet boy(现在分词作状语), the owner took him inside. After knowing what Andy had experienced(宾语从句), he praised the boy and rang his mother. 课 后 习 题 52 In no time, his mother appeared in front of him. Seeing Andy(现在分词作状语), his mother anxiously asked whether he was injured(宾语从句). Andy answered it was the dam that saved him(强调句型). His mother laughed with relief and said he really needed that fishing break to help him recover(不定式作目的状语). But Andy did not hear her. He was thinking his father’s words “When you are in a tight situation, don’t panic.” And he realized how important it was to listen to parents(宾语从句). 课 后 习 题 【思路点拨】本文以故事的发展为线索展开,讲述了安迪在上学的路上遇到蜜蜂袭击,在这种紧急状况下,安迪想起了父亲的话“当你在一个紧张的情况下时,不要恐慌,动动脑筋,想办法解决问题。”,最终安迪成功脱险。 课 后 习 题 54 【详解】 1.段落续写: ①由第一段首句内容“安迪毫不犹豫地跳下自行车,跳入清凉的水中。”可知,第一段可描写安迪通过水坝避开了蜜蜂。 ②由第二段首句内容“不一会儿,他的母亲出现在他面前。”可知,第二段可描写母亲对安迪的安慰以及安迪的感悟。 2.续写线索:跳入水中避险—避险成功—给母亲讲述过程—感悟 课 后 习 题 55 $