Unit 5 Revealing nature 突破疑难（PPT同步课件）-【学而思】2026-2027学年高二英语选择性必修第一册（外研版）

该高中英语课件聚焦高频词汇（如distant、suspect等）及核心语法（如not...until...句型、过去完成时等），通过教材例句导入，结合用法归纳、真题演练搭建学习支架，帮助学生从基础释义到语境应用逐步衔接知识脉络。 其亮点在于融合语言能力与思维品质培养，词汇教学结合教材原句与高考真题提升语言应用能力，语法讲解通过句型转换、时态填空训练逻辑分析思维。即时巩固与拓展便签助力学生高效内化，教师可直接用于课堂，提升教学针对性与效率。

The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known”.“贝格尔号”的船长想要这样一个人:他将 “从访问鲜为人知的遥远国家的机会中受益”。  教材P66   　　It seems that the school life in senior high school is distant from that of his junior high school.高中的学校生活似乎与他初中的学校生活相去甚远。   be distant　　    离……遥远;与……不同   高频词汇精讲 1 distant adj.遥远的;不同的;不友好的,冷淡的;远亲的 第1讲　描述运动的基本概念     ①(2026四川省泸州高级中学校开学考试)Instead of parking right next to your office, park a      　    (distant) away—and walk. 第1讲　描述运动的基本概念 ②(2026江苏南京七校联考)It􀆳s taken us a while to climb this high, but we get a great view of the volcano here and the beach 　　    the distance. ③Small and distant 　　    the cities though my hometown is,there is always something different to catch your eye.   用法归纳:from 即时巩固:①distance　②in　③from 答案 第1讲　描述运动的基本概念 Darwin suspected that the finches had evolved from a common ancestor, which had arrived on the islands a long time before.达尔文怀疑这些雀科小鸟是由一个共同的祖先进化而来的, 这个祖先很久以前就来到了岛上。  教材P68   　　She is suspected of having provided false information.她被怀疑提供了虚假信息。 　　Judging from his nervous expression, the police suspected him to be a pickpocket. 警察从他紧张的表情判断,怀疑他是个扒手。   ①suspect (that)...怀疑……,猜想…… ②suspect sb. 　　    (doing) sth.怀疑某人(做了)某事 ③suspect sb./sth. 　　    ... 怀疑某人/某物是…… 2 suspect v.猜想,怀疑,觉得 n.嫌疑分子,可疑对象 第1讲　描述运动的基本概念   ①Grace suspected Tom 　　    (be) the one who started the rumor about her cheating. ②In Samarkand, Mr Bissell admired the architectural wonders, while on his way to Bukhara he got a taste of police methods when　　     (suspect) of drug dealing.   用法归纳:②of　③to be 即时巩固:①to be　②suspected 答案 第1讲　描述运动的基本概念 The extinction of the Pinta Island tortoise is blamed on humans.平塔岛陆龟的灭绝被归咎 于人类。  教材P71   　　Don􀆳t always blame failure on others. Sometimes we ourselves are to blame for it.不要总是将失败归咎于他人,有时我们自身才应承担失败的责任。 　　When getting along with others, we shouldn􀆳t always blame others for mistakes. 当和其他人相处时,我们不应该总是因错误而责备其他人。 　　In the winter, lots of people find it hard to get up in the morning, and always put the blame on the cold weather.很多人发现冬天早上起床困难,并往往归咎于寒冷的天气。   3 blame v.责怪,指责;把……归咎于 n.(坏事或错事的)责任;责备;指责 第1讲　描述运动的基本概念  ①blame sth. 　　    sb./sth.把某事归咎于某人/某物 ②blame sb. 　　    sth.因某事而责备某人 ③sb./sth. be 　　    (for sth.) 某人/某物(对某事)负有责任;某人/某物(因某事)该受责备(用主 动形式表示被动意义)  ④put/lay the blame (for sth.) 　　    sb./sth.(把某事)归咎于某人/某物 ⑤bear/take/accept/shoulder the blame (for sth.)(为某事)承担责任   ①(2026四川省绵阳中学阶段测试)Watching my husband take the blame 　　    our current dilemma(困境) was truly painful. ②(2023北京)These biased(有偏见的) perspectives cannot be blamed 　　    one single cause. ③Blamed 　　    the breakdown of the school computer network, Alice was in low spirits. 第1讲　描述运动的基本概念 ④很明显,人类应该为湿地的破坏承担责任。(n. blame) Obviously, it is human beings that 　　     　　     　　     　　     　　    the destruction of the wetland. 用法归纳:①on　②for　③to blame　④on 即时巩固:①for　②on　③for　④should take/bear/accept/shoulder the blame for 答案 第1讲　描述运动的基本概念 After goats in particular had been brought to the island, the Pinta Island tortoise population de- clined.特别是当山羊被带到平塔岛上后,平塔岛陆龟的数量就下降了。  教材P71   　　The number of tourists to the scenic spot has declined by 10% in recent years to only 5 million.近年来,来该景区的游客数量下降了10%,减少到了仅500万。 　　According to the United Nations, Italy􀆳s population is expected to decline from 57 mil- lion to 41 million by 2050. 据联合国所说,到2050年,意大利的人口预计从5,700万减少到 4,100万。 　　As the economy was in decline, some people in the town had lost their jobs.由于经济 衰退,镇上有些人失去了他们的工作。 4 decline vi.减少;下降;衰退 vt.&vi.谢绝;婉言拒绝 n.减少;下降;衰退 第1讲　描述运动的基本概念    ①decline 　　    减少了……;下降了…… ②decline (from...)　　    ... (从……)减少/下降到…… ③decline to do sth.谢绝/婉拒做某事  ④be 　　    decline=be on the decline 在下降/衰退   ①declining adj.下降的;变得更低、更小或更弱的 ②常见的表示“减少”的动词(短语)还有fall、drop、decrease、go down等;常见的表示“增 加”的动词(短语)有increase、rise、go up等。   第1讲　描述运动的基本概念 ①(2026黑龙江哈尔滨市第九中学校月考)For personal reasons, the artist declined 　　    (em- brace) the commercial aspects of the art world. ②It is reported that the sales of traditional paper books have been 　　    the decline with the rise of e-books. ③Experts warn that the 　　    (decline) quality of sleep among teens may affect their physical and mental health.   用法归纳:①by　②to　④in 即时巩固:①to embrace　②on　③declining 答案 第1讲　描述运动的基本概念 Most surprisingly of all, plants have an amazing system of communication that can link nearly every plant in a forest.最令人惊讶的是,植物具有一套不可思议的通信系统,能够将一片 森林中的几乎所有植物联系在一起。  教材P76   　　The new bridge will link the island with/to the mainland.这架新的桥梁将把该岛 与大陆连接在一起。 　　In Chinese culture, red is usually linked with/to joy and celebration.在中国文化 中,红色通常与高兴和庆祝有关。  　　Undoubtedly, social customs are a vital link between the present and the past. 毫无疑问,社会风俗是现在和过去之间的重要纽带。 5 link v.把……联系起来;连接 n.联系;连接;关系,纽带;链接 写作 传统文化 第1讲　描述运动的基本概念    ①link A with/to B把A和B连接/联系起来;说明A和B有联系 ②be linked 　　    与……有关  ③a link between A 　　    B A与B之间的关系/纽带 ④click (on) the link 点击链接   ①(2024新课标Ⅰ)People often link their memory of what they􀆳ve read　　     how far into the book it was or where it was on the page. ②(2025全国二)Volunteering during teenage years has been linked 　　    some major positive effects such as improved grades and increased self-confidence. 第1讲　描述运动的基本概念 ③(2023全国乙)这能够为人们的生活带来新的乐趣和关注点,并有助于将家庭与自然之间建 立联系。 It can bring a new interest and focus into people􀆳s lives and help to make 　　　　　　　　     　　　　　　　　    . 用法归纳:②with/to　③and 即时巩固:①with/to　②with/to　③the link between home and nature 答案 第1讲　描述运动的基本概念 词汇 释义 用法&拓展 answer the call 响应号召 To answer the call of the country, many young people volunteered to work in remote areas.为了响应国家的号召,许多年轻人自愿到偏远地区工作。 evolve v.进化;逐步发展 evolve from earlier ancestors由早期祖先进化而来 evolve into...逐步发展成…… evolution n.进化;演化;发展 　a concept called open-ended evolution一个被称为“开放式演化”的概念(2023北京) 高频词汇积累 第1讲　描述运动的基本概念 generate v.产生,创造 generate electricity/heat/power 发电/产生热/产生动力 generate income/profit产生收益/利润 digitally generated pictures数字生成的图片(2025全国一) generation n.一代(人) 　the generation gap代沟 characteristic n.特征,特性,品质 adj.典型的;独特的;特有的 the/a characteristic of sb./sth.某人/某物的特征/特点/品质 第1讲　描述运动的基本概念 be native to 源于……的,原产于…… a kind of small parrot native to Australasia一种原产于 澳大拉西亚地区的小型鹦鹉 (2022全国甲) primitive adj.原始的;低等的; 旧式的, 简陋的 the primitive society原始社会 primitive man原始人 The original station buildings were quite primitive.最初 的车站建筑很简陋。 第1讲　描述运动的基本概念 giant adj.巨大的;特大的 n.巨人;伟 人;卓越人物 giant pandas大熊猫 He looks scary but he􀆳s really a gentle giant.他看上去可怕,但确实是个性格温和的巨人。 detect v.发现,察觉(尤指不易觉察到 的事物) The tests are designed to detect the disease early.这些检查旨在及早发现疾病。 detection n.察觉,发现 detector n.探测器;侦察器 detective n.警探;私人侦探 第1讲　描述运动的基本概念 root n.根; 起源,起因v.生根 take root(植物)生根;(思想)植根,深入人心(后常跟介词in) be/lie at the root of sth.是某事物的根本原因 get to the root of the problem找到问题的根源 in question 讨论中的;有疑问,不确定 The book in question, which was written by a famous author, has attracted a large number of readers.正被讨论的这本书是由一位著名作家写的,它吸引了大量的读 者。 beyond question不容怀疑的 without question毫无疑问;毫无异议地(接受或服从) out of the question不可能;不值得讨论 第1讲　描述运动的基本概念 drive...away 使……离去 Her constant nagging drove him away.她不断的唠叨把他给赶跑了。 drive off驱车离去,驶去 drive sb. crazy/mad把某人得发疯/发狂 drive sb. to do sth.迫使/驱使 某人做某事 第1讲　描述运动的基本概念 It was not published until 1859 and immediately caused a storm.这本书直到1859年才 出版,出版后立即引起轰动。  教材P68   　　He didn􀆳t realize the value of a healthy body until he got seriously sick. 　　→It was not until he got seriously sick that he realized the value of a healthy body. 　　→Not until he got seriously sick did he realize the value of a healthy body.直到他 生重病,他才意识到一个健康的身体的重要性。   　　not...until...句型意为“直到……才……”。not until还有两种结构: 　　①not...until...的强调句结构:It is/was+　　　　　    +从句/表时间的词+　　    +句子其 余部分. 1 not...until...句型 第1讲　描述运动的基本概念 　　②not...until...的倒装句结构:　　　　　    +从句/表时间的词+助动词/情态动词+主句的 主语/句子的主语+句子其余部分.   ①(2026广东深圳实验学校阶段考试)It wasn􀆳t until 1943 　　    penicillin(青霉素) came into widespread use. ②(2023浙江1月)I didn􀆳t see the raspberries held in her sharp mouth until the moment she got closer.(句型转换) →　　     　　     　　     　　     　　     　　     　　     　　     　　     　　    I saw the rasp- berries held in her sharp mouth.(强调句) →　　     　　     　　     　　     　　     　　     　　     　　     　　     　　     the raspber- ries held in her sharp mouth.(倒装句) 第1讲　描述运动的基本概念 用法归纳:①not until;that ②Not until 即时巩固:①that　②It was not until the moment she got closer that; Not until the moment she got closer did I see 答案 第1讲　描述运动的基本概念 Gregor Mendel chose to study pea plants because their characteristics were easy to control. 格雷戈尔·孟德尔选择研究豌豆植物,因为它们的特性容易控制。  教材P70   　　These signs are hard to see clearly.这些标志令人难以看清。 　　The noisy surroundings are difficult to tolerate.嘈杂的环境令人难以忍受。   　　He is always particular about everything; that is, he is hard to deal with.他总是对 一切都挑剔,也就是说他很难对付。   2 “主语+be+形容词+不定式”结构 读后续写 环境描写 第1讲　描述运动的基本概念 　　在“主语+be+形容词+不定式”结构中,常使用不定式的①　　    形式表示被动意义。 使用此结构需具备两个前提条件: (1)形容词用来说明不定式的特征。常见的此类形容词有difficult、hard、easy、good、 pleasant、interesting等。 (2)此结构中的主语是不定式的逻辑②　　    。 　　注意:若不定式中的动词为不及物动词,其后应该加相应的③　　    。   ①(2025全国二)For native speakers of English, some Chinese words are rather difficult 　　     (pronounce). ②汤姆很容易相处,所以我们都喜欢和他一起工作。 　　     　　     　　     　　     　　     　　     　　    , so we all like working with him. 第1讲　描述运动的基本概念 用法归纳:①主动　②宾语　③介词 即时巩固:①to pronounce　②Tom is easy to get along/on with 答案 第1讲　描述运动的基本概念 这位被提及的年轻人,查尔斯·达尔文,是一位地质学家兼博物学家,他对岩石、植物还有动物 非常着迷。 第1讲　描述运动的基本概念 达尔文在南美洲度过一段时间后,他船上的房间里堆满了他收集到的动植物样本。 第1讲　描述运动的基本概念 1835年,当“贝格尔号”抵达加拉帕戈斯群岛的时候,达尔文发现了各种各样的新物种,但是 其中最令他感兴趣的是鸟类。 第1讲　描述运动的基本概念 我们一直觉得,会说话的植物是幻想出来的,但新的研究揭示出一些令人惊奇的事情:植物似 乎真的能交流。 ①后置定语　②后置定语　③时间状语　④that/which　⑤时间状语　⑥强调　⑦状　⑧宾 语　⑨主语 答案 第1讲　描述运动的基本概念   　　By the age of twelve, Edison had begun to make a living by himself.到十二岁那年,爱 迪生就已经开始自己谋生了。 　　Tom was disappointed that most of the guests had left when he arrived at the party.当汤 姆到达宴会时,大部分客人已经走了,他很失望。   1.过去完成时由“助动词①　　    +动词的过去分词”构成; 2.过去完成时表示一个动作或状态在过去的某一时间或动作之前已经完成或结束,即发生在 “②　　　　　    ”;也可表示从过去某一时间开始的动作或状态一直延续到过去的另一时 间。过去完成时常与由by、for、before、since等构成的表示时间的介词短语或由after、be- 过去完成时 一 过去完成时的定义和构成 fore、since、when、by the time等引导的时间状语从句连用。 第1讲　描述运动的基本概念   　　When I woke up, it had already stopped raining.我醒来时,雨早已停了。 　　He said, “We have got two first places in the competitions.” 　　→He said that they had got two first places in the competitions.他说他们已经在比赛 中得了两个第一。 　　We had hoped to be able to come and see you.我们本来希望能来看看你。   1.在包含when、before、after、until等连词的主从复合句中,如果主句谓语和从句谓语表示 的过去的动作是在不同时间发生的,那么先发生的动作通常需要用③　　　　　    ,后发生 的动作用④　　　　　    ; 二 过去完成时的基本用法 第1讲　描述运动的基本概念 2.在told、said、knew、heard、thought等动词后的宾语从句或间接引语中,常用过去完成时 表示从句中的动作发生在主句中过去的动作⑤　　    ; 3.think、want、hope、mean、plan、intend等动词表示过去⑥　　    实现的想法、希望、打 算或意图等时,常用过去完成时。   　　在before、after引导的时间状语从句中,由于before和after本身已表达了动作的先后关系, 若主、从句表示的动作紧密相连,则主、从句多用一般过去时。 　　After he arrived in England, he worked hard to improve his English.他到达英格 兰之后,努力提高他的英语水平。 第1讲　描述运动的基本概念   　　I had no sooner reached home than it began to rain.=No sooner had I reached home than it began to rain.我刚到家就开始下雨了。 　　It was the second time that I had ever visited your school.那是我第二次参观 你们的学校。 　　This was the best advice that I had ever given to my friend.这是我给过我朋 友的最好的建议。 　　It was ten years since we had had such a wonderful time.我们有十年没玩得那么 高兴了。   三 过去完成时的常用句型 第1讲　描述运动的基本概念 　　过去完成时常用于以下几个固定句型中: 1.表示“一……就……”的几个句型:在scarcely/hardly...when...、no sooner...than...中,scarce- ly、hardly、no sooner所在主句中的谓语动词应用⑦　　　　　    ,而when、than引导的从 句应用⑧　　　　　    ; 2.在句型“This/It was the first/second/...time+that从句”或“This was the+形容词最高级+名 词+that从句”中,⑨　　    常用过去完成时; 3.在“It was+一段时间+⑩　　    从句”句型中,从句常用过去完成时。 第1讲　描述运动的基本概念   　　He had been ill for a week when he was sent to the hospital.当他被送到医院时,他已经 病了一个星期。 　　I have finished all my homework, so I can watch TV.我已经完成了我所有的作业,所 以我可以看电视了。 　　The football match was broadcast live last night.昨天晚上实况直播了足球比赛。   　　过去完成时是一个相对的时态,表示的是“过去的过去”,在和过去的某一时间或某一 动作相比较时使用。现在完成时侧重过去的动作对现在造成的影响,和现在有关。一般过去 时表示的动作是过去发生的,与现在无关。 四 过去完成时与现在完成时、一般过去时的区别 第1讲　描述运动的基本概念   ①(2026四川成都七中月考) I quickly searched the crowd for the school􀆳s coach and asked him what 　　　　    (happen). ②(2025全国一)He was facing health issues and his wife of thirty-five years 　　　　    (pass) away a few months earlier. ③(2025全国一)My husband and I had just sold our house and we were busy emptying out the beloved home our family 　　　　    (spend) 23 years filling up. ④(2023新课标Ⅱ)It felt great to know that I 　　　　    (help) bring this family together again. ⑤(2023新课标Ⅱ)As a little girl, I 　　　　    (wish) to be a zookeeper when I grew up. ⑥(2022全国甲)In the last five years, Cao 　　　　    (walk) through 34 countries in six conti- nents, and in 2016, he reached the top of Kilimanjaro, Africa􀆳s highest mountain. 第1讲　描述运动的基本概念 ⑦I 　　　　    (hope) to send Peter a gift to congratulate him on his marriage,but I couldn􀆳t manage it. ⑧这是他第三次犯同样的错误了。 It was the third time that 　　　     　　　     　　　     　　　     　　　     　　　    . ⑨我刚到家大雨就倾盆而下。 Hardly 　　　     　　　　　　　　　　　　　　　    the heavy rain poured down. ⑩她话刚说完,就哭了起来。 　　　     　　　     　　　     she said it 　　　    she burst into tears.  坦白说,我曾多次尝试游泳,但每次都以失败告终。(n. attempt) To be frank, I 　　　　　　　　　　　     　　　     　　　     　　　    , but failed each time. 第1讲　描述运动的基本概念  (2026黑龙江哈尔滨市第九中学校月考) 正是在她儿时就一直梦想着要登上的那个舞台上, 她最终赢得了歌唱比赛。(perform) It was on the very stage that 　　　　　　　　　　　　　　　　　　　    on since childhood that she finally won the singing competition. 用法归纳:①had　②过去的过去　③过去完成时　④一般过去时　⑤之前　⑥未能/没有     ⑦过去完成时　⑧一般过去时　⑨从句　⑩since 即时巩固:①had happened　②had passed　③had spent　④had helped　⑤wished　⑥has walked　⑦had hoped　⑧he had made the same mistake　⑨had I got home when　⑩No sooner had;than     had made many attempts to swim  she had dreamed of performing 答案 第1讲　描述运动的基本概念 $