Unit 4 Section B 2a-2c 2026-2027学年九年级英语上册同步实用课件（新教材人教版）

Our Memory Unit 4 Section B (2a-2c) Learning Objectives 能够准确运用常见前缀和后缀进行派生词构词，理解常见前缀、后缀的使用条件和构词规律，扩展词汇网络，培养举一反三的词汇学习策略。 能够根据语境恰当搭配、正确使用单元所学词汇。 能够在语篇理解与填空的基础上，拓展关于记忆与动物行为的知识，增强跨学科理解和探究兴趣。 Free talk Do you have special ways to help you remember new words? Put words into meaningful groups. Connect words with pictures. Make short stories with new words. Remember word families with prefixes and suffixes. 词缀 类型 含义/用法 re- 前缀 表示again / back, “再; 重新; 又” un- 前缀 表示not, “不; 非; 相反” -ion 后缀 常把动词变成名词, 表示 “动作/过程/结果” -or 后缀 常表示 “做某事的人” -ive 后缀 常把名词或动词变成形容词, 表示“有…性质的” -ful 后缀 构成形容词, 表示 “充满…的 / 容易…的” -able 后缀 构成形容词, 表示 “能够…的 / 可以…的” -ly 后缀 常把形容词变成副词, 表示 “以……方式” -ness 后缀 常把形容词变成名词, 表示 “状态、性质” re “再、重新、又” 重写 重建 复述 再利用 归还 重复 复习 rewrite rebuild retell reuse return repeat review un “不、非、相反” 不开心的 不幸运的 不公平的 不能的 不健康的 不安全的 不同寻常的 不舒服的 没有必要的 难以置信的 出乎意料的 不情愿的 unhappy unlucky unfair unable unhealthy unsafe unusual uncomfortable unnessary unbelievable unexpected unwilling or “做某事的人” 演员 参观者 发明家 医生 班长，监视器 翻译家 编辑 actor visitor inventor doctor monitor translator editor ion 行动 教育 发明物 注意力 污染 准备 交流 决定 讨论 表达 介绍 信息 action education invention attention pollution preparation communication decision discussion expression introduction information ness 幸福，快乐 悲伤 善良，好意 黑暗 弱点，虚弱 疾病 善良，美德 孤独 公平 happiness sadness kindness darkness weakness illness goodness loneliness fairness able "能够...的， 可以...的" 可获得，有空的 舒适的 可能的 合适的，适宜的 可信的 合理的 有价值的，宝贵的 令人愉快的 可接受的 可水洗的 available comfortable possible suitable believable reasonable valuable enjoyable acceptable washable ly adj 友好的 可爱的， 美好的 孤独的 活泼的， 生动的 傻的 致命的 年长的 仔细地 舒适地 积极地 成功地 难以置信地 可能地 幸运地 容易地 ly adv friendly lovely lonely lively silly deadly elderly carefully comfortably actively successfully unbelievably possibly luckily easily ive 积极的，活跃的 有创造力的 富有想象力的 保护的 有效的 本土的，本国的 积极乐观的 消极的，负面的 active creative imaginative protective effective native positive negative ful 有帮助的 仔细的 满怀希望的 强大的，有力的 感激的 和平的，安宁的 成功的 疼痛的，痛苦的 可怕的 helpful careful hopeful powerful thankful peaceful successful painful fearful 2a. Use affixes to create as many new words as possible. Use your dictionary. 词缀 词缀 affixes：加在单词词根前后，改变词义或者词性的构词部件，分为前缀 prefix(放单词前面) 和 后缀 suffix(放单词后面)。 前缀：一般改变词义，不改变词性； 后缀：一般改变词性，词义变化不大； 词根：单词的核心本体。 n. 作用；影响；效果 v. 行为；举动；表现；表演 have an effect on…对……产生影响 take effect 生效 effect -ive -ly -ness forget -ful -able -ness un- act re- -ion -ive -or action n.行动 react v.反应 active adj.积极的 actor n. 男演员 effective adj. 有效的 effectively adv. 有效地 effectiveness n. 有效性 forgetful adj.健忘的 forgettable adj. 易被遗忘的 forgetfulness n. 健忘 unforgettable adj. 难忘的 2a. Use affixes to create as many new words as possible. Use your dictionary. 1. When she heard the good news, she ________ happily. 2. A little ____________ for old people is normal. 3. We should take ________ to protect the earth. 4. We should pay attention to the ____________ of learning methods. 5. This is an _________ way to improve memory. 6. He is ________ in class. 7. This ________ has great memory. 8. We can remember words __________ by putting them into groups. 9. People become ___________ when they get old. 10. Most words are ____________ if we only read them once. 11. My trip to Nanjing is __________. reacted forgetfulness action effectiveness effective active actor effectively forgetful unforgettable forgettable action, react, active, actor, forgetful, forgetfulness, forgettable, unforgettable, effective, effectively, effectiveness 1. The customer _____________ badly to the price increase. 2. Starting over is not easy, but it is necessary in my _____. 3. His memory technique is simple but _________. 4. The man has lost a lot of blood. He is _______ to die from his wounds if not treated at once. 5. Our hotel is in a great ________ near the central mall. 6. I can't recall which notebook I wrote your email ___________ in. 重新开始 2b. Complete the sentences with the correct forms of the words from the word cloud. reacted / reacts case effective likely position address react badly 反应激烈/糟糕 涨价 in one’s case 就某人情况而言 失血过多 be likely to do 可能… 死于… 伤口 治疗 回想 邮件地址 位置很好; 处于有利地位 技巧 2c Complete the passage with the correct forms of the phrases in the box. Which animal impressed you the most? /ˈskwɪrəl/ n.松鼠 /nʌt/ n.坚果,果仁 /waɪld/ adj.野生的 /ˈrekəɡnaɪz/ v.认出;识别 /ˈdɒlfɪn/ n.海豚 经历；经受 用完；耗尽 遭到；发生在某人身上 sth. happen(s/ed) to sb. 记住；牢记 keep sth in mind go through run out happen to keep in mind Research shows that many animals have good long-term memories. They ____ ________ where food can be found and where it is safe. For example, when squirrels _________ of food, they go straight to the place where they hid nuts. Every autumn, wild geese fly thousands of kilometres south for the winter. Humans do not know for sure what ___________ their minds during the journey, but wild geese seldom get lost. A similar situation ___________ dolphins. They can recognize voices of other dolphins - even when they have not met each other for a long time. keep in mind run out goes through happens to 2c. Complete the passage with the correct forms of the phrases in the box. Which animal impressed you the most? 1. What's the topic sentence of this paragraph? Research shows that many animals have good long-term memories. They keep in mind where food can be found and where it is safe. For example, when squirrels run out of food, they go straight to the place where they hid nuts. Every autumn, wild geese fly thousands of kilometres south for the winter. Humans do not know for sure what goes through their minds during the journey, but wild geese seldom get lost. A similar situation happens to dolphins. They can recognize voices of other dolphins - even when they have not met each other for a long time. 2. How does the writer support his idea? 2. How many examples does the writer give? By giving examples. Three. Read and answer 1. How do squirrels remember where they put their food? They keep in mind the places where they hide nuts. When they run out of food, they can go straight there. 2. How do we know wild geese have good long-term memories? They fly thousands of kilometers south for the winter, but they seldom get lost. 3. How do dolphins use their memory to recognize other dolphins? They can recognize the voices even after a long time without meeting each other. Language Points Research shows that many animals have good long‑term memories. They keep in mind where food can be found and where it is safe. For example, when squirrels run out of food, they go straight to the place where they hid nuts. Every autumn, wild geese fly thousands of kilometres south for the winter. Humans do not know for sure what goes through their minds during the journey, but wild geese seldom get lost. A similar situation happens to dolphins. They can recognize voices of other dolphins—even when they have not met each other for a long time. 长期记忆 记住；牢记 用完；耗尽（主语是人/动物） 径直前往…… 数千公里 过冬 确切地；毫无疑问 掠过某人的脑海；某人心里在想 在旅途当中 迷路 类似的情况 发生在…身上 识别声音 Exercises 1.对...做出反应 2. 重新开始 3. 就某人的情况而言 4.处于一个极佳的位置 5.某人发生了某事 6. 记住；牢记 7. 有很好的长期记忆 8. 径直走向某地 9.经历；经受 10.有一点健忘 11. 一次难忘的旅行 12. 采取行动 react to sth. an unforttable trip in one's opinion be in a great position sth. happen(s/ed) to sb. keep in mind have good long-term memories go straight to ... go through be a little forgetful take action start over 1. 这个男人流了很多血。如果布里克治疗，他很可能因受伤而死。(likely) The man ________________________. He _______________________ if not treated at once. 2. 他把水用光了。（2） He has _______________________. / The water has ____________________________. 3. 这位顾客对价格增长反应强烈。 The customer _____________________________________________. 4. 每年秋天，大雁飞数千千米南下过冬。 Every autumn, the wild geese __________________________________________. 5. 人们不确定它们在旅途中会经历什么想法，但大雁很少迷路。 People don't know for sure ____________________________, but wild geese______________. 6. 类似的情况也发生正在海豚身上。它们能辨别其它海豚的声音。 A sililar situation ____________________. They can ______________________________. has lost a lot of blood is likely to die from his wounds run out of water run out reacted badly to the price increase fly thousands of kilometers south for the winter what goes through their minds during the journey seldom get lost happens to dolphins recognize voices of other dolphins $