选择性必修第三册 UNIT 4 ADVERSITY AND COURAGE(课件) -【赢在微点】2025年高考英语大一轮复习顶层设计高考划重点（人教版2019）

高考复习顶层设计·英语 赢在微点 高考复习顶层设计 英语 选择性必修第三册 UNIT 4　ADVERSITY AND COURAGE 学案1 练学核心单词 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 教材新练法　通教材才能百通 1.But I was so enthusiastic ___________ the idea of going along with them that I secretly went ___________ his ship, the Endurance. 2.He assigned me ___________ (be) a steward, and now I serve meals ___________ twenty-eight men, three times a day. about aboard to be for UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 3.Life was cruel ___________ Oliver when he was young. Although living ___________ miserable life, he had a very kind heart. 4.The dog _________________ (bark) for about two hours. I really hope it will stop soon. to a has been barking UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 高考这样考　知高考才会应对 1.Students will work in groups to complete four ___________ (assign) during the course. (2022·新高考Ⅰ卷) 答案与解析　assignments　空前是four,故空处用复数名词,填assignments。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 2.Emma says it’s challenging ___________ (be) a health expert, because people can be easily influenced by ___________ (advertise) that lack scientific support. (2022·新高考Ⅰ卷) 答案与解析　to be; advertisements　第一空是it’s+adj.+to do句式,故填to be;第二空指“广告”,根据从句谓语lack,可知该空用复数名词,填advertisements。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 3.Come and work out with our ___________ (qualify) personal trainer, Jodie McGregor, on the grounds of the Middleton Lodge estate. (2021·新高考Ⅱ卷) 答案与解析　qualified　空处作定语,修饰名词trainer,表“符合资格的”,填qualified。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 4.Under the ___________ (guide) of their father, they took positive actions and started all over again. (2021·新高考Ⅰ卷) 答案与解析　guidance　under the guidance of “在……指导下”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 5.That refers to taking a ___________ (guide) tour in Central Asia. (新高考Ⅰ卷) 答案与解析　guided　空处修饰名词tour,表“有导游的旅行”,填guided。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 词缀记忆法　名词后缀-tion/-ation表示状态或行为 去y+ ※①qualify使有资格→qualification资格; ※②apply申请;应用→application申请;应用; ③occupy占据;占用→occupation职业;占用 直接+ ④adapt适应→adaptation适应; ⑤confirm确认→confirmation确认; ⑥found创立→foundation创立; ⑦expect期待→expectation期待 -ption ⑧assume假定;设想→assumption假定;假设; ⑨consume消费;消耗→consumption消费;消耗; ⑩describe描写;描述→description 描写;描述; 11subscribe订阅→subscription订阅 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 1.abandon vt. ①______________　②______________ 练基础　单句语法填空 ①By last month, his thought of submitting the plan to the committee ___________________ (abandon). ②Before ___________ (abandon) the ship, Shackleton calmly called us together and told us to rescue our most essentials. 舍弃;抛弃 放弃 had been abandoned abandoning UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 ③Wang collected more than 7 million ___________ (abandon) bricks of different ages. ④The __________ (abandon) boy finally abandoned __________ (attend) school, and he was even found abandoning himself to __________ (take) drugs. ⑤They drank and smoked ___________ abandon. ⑥He abandoned himself _________ his emotions. (续写情感细节描写) abandoned abandoned attending taking with to UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 提写作　试写佳句　背诵 他最后一句话太扎心了。她大哭起来,陷入绝望。(续写情感描写) ⑦His last word went like a bullet to her heart. _____________________________________________. She burst into tears and abandoned herself to despair UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 2.sink vi. ①___________　②_________ vt. ③_______________ 练基础　单句语法填空 ①She ___________ (sink) back into her seat, exhausted. ②The dog sank its teeth ___________ my arm. ③When the man heard the ship ___________ into the ocean, his heart ___________. (sink) 沉没;下沉 下降 使下沉;使沉没 sank into had sunk sank UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 ④The mother, along with her children, was rescued from the ___________ (sink) boat by a passing ship. ⑤In this book, he includes the loss of the space shuttles (航天飞机) Challenger and Columbia, and the ___________ (sink) of the Titanic. ⑥She felt desperately tired and her spirits ___________ (sink). ⑦With a ___________ (sink) heart, he dragged his feet home. sinking sinking sank/sunk sinking UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 提写作　试写佳句　背诵 悲伤如潮水一般涌来。他倒在椅子上,哭得死去活来。(续写情感描写) ⑧Grief/Sadness/Sorrow came in waves. __________________________ ____________. He sank onto the chair, crying his heart out UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 Ⅰ.词形转换和动词形式变化 1.She ___________ (qualify) as a surgeon in 1813, then joined the British Army, serving overseas. (2023·全国乙卷) 答案与解析　qualified　空处作谓语,且与后面的joined时态一致,应用一般过去时,填qualified。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 2.Alone and sleepless, she stared ___________ (miserable) up at the ceiling. (续写情感细节描写) 答案与解析　miserably　空处作状语,修饰谓语stared, 应用副词作状语,填miserably。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 3.___________ (fortunate), dozens of students didn’t seize the opportunity to finish these ___________ (assign) readings ahead of time. 答案与解析　Unfortunately; assigned　第一空作状语,应用副词,又根据句中的“没有抓住机会完成任务”可知,此处指的是“不幸地”,故填副词Unfortunately;第二空作定语,assign与readings是逻辑上的动宾关系,故填assigned。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 4.It is shameful to break school rules, to be ___________ (self) or to make little effort to achieve progress. 答案与解析　selfish　空处作表语,表“自私的”,填形容词selfish。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 5.It took the city ___________ (rough) 2 weeks to dispose of the garbage and restore the garden to its former beauty. 答案与解析　roughly　设空在句中作状语,修饰2 weeks,应用副词,填roughly。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 6.The reason why a great man is great is that he ___________ (resolve) to be a great man. 答案与解析　resolves　根据句中已有的谓语is结合语境“伟大的人之所以伟大是因为他决定成为伟大的人”可知,此处指的是一般情况,应用一般现在时,故填resolves。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 7.He ___________ (envy) by his friends because he was selected to attend the ceremony on behalf of the enterprise. 答案与解析　was envied　从句是一般过去时,故主句用一般过去时,又主语He与envy是被动关系,故用一般过去时的被动语态,填was envied。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 Ⅱ.固定用法和搭配 　　After seeing the advertisement in the newspaper, Perce Blackborow resolved ①___________ (join) the Antarctic expedition led by Sir Ernest Shackleton no matter what challenges might lie ahead. Unfortunately, his application was turned ②___________ because he was too young and not qualified ③___________ the expedition. However, he managed to get aboard the Endurance with his friend’s help. He ④___________ (hide) in a cupboard, but was soon discovered and brought to Shackleton. Although to join down for hid UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 the captain was angry, he assigned the boy ⑤___________ (cook) for the crew. Their voyage did not go smoothly, and the Endurance became ⑥___________ (stick) in the ice. Before the Endurance was crushed and ⑦_________ (sink) into the sea, Shackleton had the ship ⑧___________ (abandon), and the crew had to camp on ice. They then sailed to Elephant Island. Soon after that, Shackleton selected a boat party and set off ⑨_______ South Georgia Island to seek help. to cook stuck sank abandoned for UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 Ⅲ.熟词生义和派生/合成词汇 派生词汇　巧借词缀猜新义 1.His application was denied by the agency even though the SEC order cited the report in its investigation and settlement and credited Doe as an author of the report. The SEC said Doe failed to provide the information directly to the SEC as the staff found the public report themselves, disqualifying Doe as a whistleblower. ___________ 答案与解析　使不合格;取消……的资格　dis-非;不;无;反对+qualify 使具有资格;使合格→disqualify　vt. “使不合格; 取消……的资格”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 合成词汇 2.More recently, as books have become inexpensive or even throwaway, artists have used them as the raw material for artworks—transforming covers, pages or even complete volumes into paintings and sculptures. (2023·新高考Ⅱ卷阅读) ___________ 答案与解析　抛弃型的　throw 扔掉;抛弃+away=throwaway adj. “抛弃型的”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 They wrote the notice in big red letters so that it would stick ___________. 答案与解析　out　stick out “醒目;显眼”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 学案2 掌握短语和句式 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 教材新练法　通教材才能百通 1.There was nothing ___________ a good dinner and some music to cheer us ___________. 2.If it ___________ (be) not for sea animals, we would all starve. 3.We ___________________ (struggle) for days, but things on Elephant Island are going from bad to ___________ (bad). like up were have been struggling worse UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 4.The team ___________ (consist) of seven members sailed on rough seas for days ___________ they landed on the other side of South Georgia Island. 5.Your fridge gives ___________ a terrible smell. When did you last clear it? consisting before off UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 高考这样考　知高考才会应对 1.We managed ___________ (leave) this spot to climb higher because of the spare time until sunset. (2023·全国乙卷) 答案与解析　to leave　manage to do sth. “设法做某事”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 2.As long ___________ I get close enough, no criminal can escape from me. (2021·新高考Ⅱ卷) 答案与解析　as　as long as “只要”,引导条件状语从句。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 3.___________ the song goes, this long and winding road “will never disappear”, and it will always stick ___________ the visitor’s memory. (2021·新高考Ⅰ卷) 答案与解析　As; in　第一空as表“正如”,正如歌曲所唱的;第二空是stick in one’s memory “铭记在心,经久不衰”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 4.Here I am ___________ top of Mount Fuji. And here I am in a hot air balloon. (2021·新高考Ⅰ卷) 答案与解析　on　on top of “在……顶部”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 5.This time, she turned ___________ the fire so it cooked nicely. (2021·新高考Ⅰ卷) 答案与解析　down　turn down “调小”。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 6.Although popular beliefs regarding emotional intelligence run far ahead ___________ what research can reasonably support, the overall effects of the publicity have been ___________ (benefit) than harmful. (2021·新高考Ⅰ卷) 答案与解析　of; more beneficial　ahead of “在……前面;早于;领先”;第二空作表语,应用形容词,且空后是比较级提示词than,故填more beneficial。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 1.动词stick短语的常考点 ①If you stick ___________ it, your playing will gradually get better. ②I could feel my shirt ___________ (stick) to my back. ③Someone ___________ (stick) posters all over the wall the other day. with sticking stuck UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 ④She opened the window and stuck her head ___________. ⑤Let’s stick to ___________ (discuss) whether the road should be built at all. The exact cost is beside the point. ⑥Although my kindergarten experience feels like a century ago, the lessons I learned will stick ________ my mind forever. (2022·浙江卷) out discussing in UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 ⑦I ___________ (stick) for five or six minutes though it felt much longer. (2021·浙江卷) ⑧And in Karakalpakstan, he is saddened by the dust storms, diseases and fishing boats _________ (stick) miles from the sea. (2020·新高考Ⅰ卷) ⑨_____________ (stick) in the problem did not discourage him from sticking ___________ the plan. was stuck stuck Being stuck to UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 2.keep+宾语+宾补 ①One is computer scientist Chris Johnson who I see as someone who helps keep the field ___________ (honesty). (2022·北京卷) ②In the lab, keeping things clean and ___________ (organize) can help provide a safer environment. (2021·天津卷) ③It is necessary that we keep the young generation ___________ (inform) of the current affairs. honest organized informed UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 ④He kept ___________ (look) around. Everything looked so strange, somehow. ⑤Harry kept _______________ (wake) by his old nightmare, which was now worse than ever. ⑥Harry woke early the next morning. Although he could tell it was daylight, he kept his eyes ___________ (shut) tight. looking being woken shut UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 3.感叹句 ①___________ a cruel man he was! Everyone present at the meeting was shocked. ②When I tell people I’m interested in law, they may think: “___________ boring!” What How UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 ③___________ amazing places you have visited in the past weeks! ④___________ high the kite is flying in the sky! ⑤We are all amazed at ___________ great progress you have made! What How what UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 学案3 最提分微写作 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 应用文写作提分练　短文(优秀品行)说明态度+举例→简要介绍→感受 用本单元所学词汇、句式完成下面的应用文写作再背诵。 你们学校正举办主题为“如何应对逆境”的征文活动。请你写一篇短文投稿,内容要点如下:1.面对逆境的态度;2.举例说明(中国古代或现代名人);3.简要介绍人物面临的逆境;4.你的感受或启发。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 第一步　斟酌词句　靓化表达(加黑体部分请用本单元所复习的词汇和句式) 1.面对逆境,重要的是有毅力砥砺前行。 _______________________________________________ to plod on. (非谓语动词作状语+主语从句) Facing adversity, what matters is having the perseverance UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 2.以汉代最有影响力的探险家之一张骞为例,面对困境他表现出了非凡的忍耐力和毅力。 Take Zhang Qian, one of the most influential explorers during the Han Dynasty, as an example, _______________________________________　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　. (定语从句)  who showed exceptional endurance and perseverance in the face of adversity UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 3.张骞两次奉命率领远征西域。 _________________________________________________________________ 4.他曾被羁押十多年,但从未放弃行程的目的。 He was once detained for over a decade, ___________________________ _______________________. Zhang Qian was assigned to lead the expedition to the Western regions twice. but he never abandoned the motive for his voyages UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 5.尽管旅途艰苦,他的奉献却促进了丝绸之路沿线的东西方商业和文化的交流。 Despite ___________ journey conditions, _________________________ _________________________________ between the East and the West along the Silk Road. 6.在他的激励下,我决心无论遇到什么困难都要坚持自己的目标。 Inspired by him, ______________________________________________ __________. miserable his commitment facilitated the commercial and cultural exchanges I have resolved to stick to my aim regardless of any difficulties UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 第二步　恰当过渡　完美成文(请利用恰当的过渡衔接词汇,如furthermore、 unfortunately等) 范文　 　　Facing adversity, what matters is having the perseverance to plod on. Take Zhang Qian, one of the most influential explorers during the Han Dynasty, as an example, who showed exceptional endurance and perseverance in the face of adversity. UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 Zhang Qian was assigned to lead the expedition to the Western regions twice. Unfortunately, he was once detained for over a decade, but he never abandoned the motive for his voyages. Furthermore, despite miserable journey conditions, his commitment facilitated the commercial and cultural exchanges between the East and the West along the Silk Road. Inspired by him, I have resolved to stick to my aim regardless of any difficulties. UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 续写提分小语段　(主题:生活感悟) 根据左栏汉语和黑体部分的提示,利用本单元所复习的词汇和句式补全小语段,并背诵成文。 大约两小时后,大火被完全控制住了。房子散发出烟味。整个社区都是烟味。甚至我们身上都有烟味!幸运的是,房子没有完全损失。虽然房子烟熏味很大又潮湿,但还能修好。家具、毯子等物品可以更换。每个心情低落的人都振作起来开始打扫屋子,让空气流通。狗开始在四处吠叫,似乎想帮忙。但是多亏了这场悲剧——或者要不是这场火灾——我们不可能找到如此真诚的理由来细数我们的幸运和感恩。 UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 After around two hours, the fire was completely contained. ①__________ ______________________. The whole neighborhood smelled of smoke. Even we smelled of smoke! ②__________, the house was not a total loss. ③_____________________, the house was repairable. ④_____________ _________________________, could be replaced. ⑤________________ ___________ cheered up and set out to clean and air out the house. ⑥__________________________________________. But thanks to the tragedy—or maybe but for it—we could not have found so genuine reasons to count our blessings and feel grateful. Our house gave off smells of smoke Fortunately Though smoky and damp Belongings, such as furniture and blankets Everyone with a sinking heart Dogs began barking around, as if eager to help UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 仿写(仿效加曲线句)但多亏了这段经历——或者要不是这次经历——我找不到如此真诚的理由来表达我对父母的感激之情。 ⑦_________________________________________________________ ___________________________________________________________ But thanks to the experience—or maybe but for it—I could not have found so genuine reasons to convey my gratitude to my parents. UNIT 4　ADVERSITY AND COURAGE 高考复习顶层设计 英语 第 ‹#› 页 赢在字里行间 点击 导航 学案3 学案2 学案1 本部分内容讲解结束 $$