Unit 4 Our Memory Section B 2a-2c 词汇课件 2026-2027学年人教版九年级英语上册

该初中英语课件围绕“Our Memory”主题，聚焦词缀构词规则与记忆相关词汇应用，通过Free Talk结合视频提问词缀变化方式导入，以词根act、forget、effect为基础，引导学生用re-、un-等前缀及-ion、-ive等后缀生成新词，搭建从构词规则到语境应用的学习支架。 其亮点在于融合语言能力、思维品质与文化意识，通过词缀分类表、挑战任务（如用re-生成rewrite等词）及动物记忆阅读（松鼠藏坚果、大雁迁徙等例子），引导学生分析构词规则、利用语境线索选词，同时渗透自然中记忆的普遍性。学生能系统掌握构词法并提升词汇应用能力，教师可借助结构化练习高效开展词汇教学。

Unit 4 Our Memory How can we improve our memory? Section B (2a-2c Vocabulary) Thinking Quality Learning Ability Cultural Awareness Language Ability Learning Objectives Use affixes to create new words and apply target vocabulary in different contexts. Appreciate animals' amazing memory and understand that memory exists widely in nature. Complete cloze tasks using memory-related phrases in a passage about animals. Analyze word formation rules and choose correct words through contextual clues. What is the video about? In the video, how does he change a word to make it mean differently? Free Talk Memorizing words with affixes. /ˈæfɪks/ progress gradual prefix suffix root Use affixes to create as many new words as possible. Use your dictionary. 2a root act, forget, effect prefix re-, un- suffix -ion, -ive, -or, -ful, able, -ness, -ly Use affixes to create as many new words as possible. Use your dictionary. 2a react action active actor forgetful forgettable forgetfulness unforgettable effective effectively effectiveness Prefix Word Class It Attaches To Meaning Example re- verbs again, once more act → react un- adjectives not, the opposite of forgettable → unforgettable How much do you know about these affixes? Challenge: Create More Words! re- un- write → rewrite turn → return use → reuse start → restart view → review act → react happy → unhappy fair → unfair able → unable forgettable → unforgettable kind → unkind true → untrue Suffix Word Class Shift (Original → New) Meaning Example -ion verb → noun the action, state or result of an action act → action -ive verb/noun → adjective having the quality of; tending to act → active; effect → effective -or verb → noun person or thing that performs the action act → actor -ful noun/verb → adjective full of; having a lot of forget → forgetful -able verb → adjective able to be; fit to be forget → forgettable -ness adjective → noun a state or quality forgetful → forgetfulness; effective → effectiveness -ly adjective → adverb in a ... way effective → effectively How much do you know about these affixes? -ion/-ness是名词 -ful/-able/-ive是形容词 -ly一加变副词 Challenge: Create More Words! -ion/-ness -ful/-able/-ive -ly act → action create → creation educate → education discuss → discussion happy → happiness kind → kindness dark → darkness weak → weakness care → careful hope → hopeful pain → painful enjoy → enjoyable read → readable wash → washable attract → attractive impress → impressive protect → protective quick → quickly slow → slowly clear → clearly gentle → gently quiet → quietly easy → easily Complete the sentences with the correct forms of the words from the word cloud. 2b The customer ________ badly to the price increase. Starting over is not easy, but it is necessary in my ________. His memory technique is simple but ________. The man has lost a lot of blood. He is ________ to die of wounds if not treated at once. Our hotel is in a great ________ near the central mall. I can’t recall which notebook I wrote your email ________ in. reacted case effective likely position address wild geese in the sky squirrels living on land dolphins in the ocean 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. go through run out happen to keep in mind keep in mind run out goes through happens to What is the writer’s main idea about animals’ memory? Many animals have good long-term memories. What examples does the writer use to support this idea? Squirrels go straight to the place where they hid nuts when food runs out. Wild geese fly thousands of kilometres south without getting lost. Dolphins can recognize voices of other dolphins even after a long time. From squirrels to elephants, memory is nature’s gift to all living beings. And the most beautiful memory of all? The ones we keep in our hearts. 1. effective adj. 有效的 effect n. 效果 effectiveness n. 有效 反: ineffective adj. 无效果的;不起作用的 effectively adv.有效地 be effective in (doing)... 在......方面有效 effective measures 有效措施 have a harmful effect on... 对......有危害 come into effect 生效 Regular exercise is effective in keeping healthy.规律锻炼对保持健康很有效。 The government took effective measures to reduce pollution. 2. The customer reacted badly to the price increase. increasing adj. 不断增长的 increased adj. 已经增长的 on the increase 在增加;在上升 The price of apples increased by 20%. 苹果的价格上涨了20%。 The temperature increased to 35℃ yesterday. 昨天温度上升到了35摄氏度。 increase by 增加了...... to 增加到...... in 在......方面增加 increase n. 增长 1. The price of rice increased 10% last month. 2. The temperature will increase 28°C tomorrow. 3. There is an (increase) number of birds in the park. 4. 加入读书俱乐部的学生人数有了大幅增长。 There has been the number of students joining the reading club. 5. 新的熊猫展区开放后，当地动物园的游客数量增长了50%。 The local zoo's visitor count after the new panda exhibit opened. by to increasing a big increase in increased by 50% 3. They can recognize voices of other dolphins. recognize (=recognise) v. 辨认出; 认可 recognition n.认出;承认 be recognized by... 被......认定 /承认 I recognized your voice on the phone. 我在电话里听出了你的声音。 He has been recognized as a talented singer. 他已被公认为有天赋的歌手。 He recognized that he made a mistake. 他意识到自己犯了错。 The painting is recognized by experts as a masterpiece. 这幅画被专家认定为杰作。 recognize sb / sth 认出/认可某人/某物 ...as... 把......认作/看作...... that / wh-从句 意识到;承认...... 1. I can easily （辨认出）his handwriting because it's very unique. 2. The song (recognize) with its beautiful melody by most of the students. 3.这座建筑被认为是该市的历史地标。 This building a historical landmark in the city. recognize is recognized is recognized as 用括号内所给词的适当形式填空。 1. When he heard the bad news, he ________ (react) to it in a quiet way. 2. This kind of medicine is ________ (effect) for people with colds. 3. If people are not treated in time, they may ________ (death) of serious wounds. 4. He was disappointed that his best friend didn't ________ (act) to his wedding invitation for weeks. 5. The kindness of the local people during our trip made the journey truly ________ (forget). reacted effective die react unforgettable 感谢观看 Thanks $