Unit 4 Section B（Vocabulary in use 2a-2d）（同步教学课件）-2025-2026学年八年级英语上册同步教学精品课件（人教版2024）

该初中英语课件围绕“奇妙动植物”主题，聚焦名词后缀（-ance, -tion, -ness, -ity）构词规则及相关词汇运用，通过“圈出不同项说明原因”活动激活旧知，衔接后缀分类学习与词典辅助练习，最终在青蛙生态阅读中应用词汇语法，构建“旧知-规则-练习-应用”的学习支架。 其亮点是以动植物生态为情境整合语言要素，通过后缀功能对比（如-ance表动作、-ness表性质）和词义辨析（disappointed与disappointing）提升思维品质，自主查词典、思维导图作业培养学习能力。学生能夯实词汇运用与阅读分析能力，教师可借助系统练习与情境设计高效实施教学。

Section B 2a-2d Unit Amazing Animals and Plants Learning Aims 语言能力 文化意识 思维品质 学习能力 Acquire and apply academic vocabulary to describe biological features. Use context clues and word maps to expand lexical networks independently.  Classify words by themes and analyze word-formation patterns. Recognize how vocabulary reflects human understanding of global plant-animal diversity. 2a Circle the odd ones. Then give your reasons. 1. habit height size weight 2. joy happiness fun enjoy 3. angry disappointed smart sad 4. appear look seem watch 5. honey milk juice bread happiness performance reality education movement decision Do you know these nouns? Are they the original forms or changed ones? We can change verbs/adjectives into nouns by adding suffix. We can add suffixes to their endings [ˈsʌfɪks] 后缀 happy (adj.) + -ness → happiness (n.) perform (v.) → performance (n.) educate (v.) → education (n.) real (adj.) → reality move(v.)-movement (n.) decide(v.)-decision (n.) 2b Add the endings -ance, -(t) ion, -ness, and -ity to form nouns. Use your dictionary. 1. act _________________ 2. good _________________ 3. kind _________________ 4. appear _________________ 5. real _________________ 6. imagine _________________ 7. connect _________________ 8. popular _________________ 9. communicate _________________ 10. important _________________ action goodness kindness appearance reality imagination connection popularity communication importance 2b Add the endings -ance, -(t)ion, -ness, and -ity to form nouns. Use your dictionary. 词缀affix 前缀prefix 后缀suffix To change the meaning or the part- of - speech 后缀suffix -age -ee/-er/-or/-ist -ication/ -tion/-sion -dom -ance/-ence -al -ment -(i)ty -ness -ism -ery Can you classify them? Do you know some suffix? 后缀suffix -age -ee/-er/-or/-ist -ication/ -tion/-sion -dom -ance/-ence -al -ment -(i)ty -ness -ism -ery Can you classify them? Do you know some suffix? 加在v.后 加在adj.后 加在v./adj.后 -age -ee/-er/-or/-ist -ication/-tion/-sion -al -ment -ery a state, condition, trait, or quality, an action, a place for such, or its result 表达一种状态、条件、特点、品质、动作、地点或结果 -dom -(i)ty -ness 加在adj.后 a state, condition, trait, or quality表达一种状态、条件、特点、品质 -ance/-ence -ism 加在v./adj.后 a state, condition, trait, or quality, an action, a doctrine, theory, or a set of guiding principle表达一种状态、条件、特点、品质、动作、教条或是理论主义 加在v.后 Summary Complete the sentences with the correct forms of the words in the box. 1. I felt ________________ when my favourite flowers died. 2. After the rain, some mushrooms ________________ in the garden. 3. In my hometown, people often use bamboo baskets to ________________ food. 4. What did you put in your luggage? It ________________ a ton. 5. I can’t ________________ my life without my pets. They mean a lot to me. appear disappoint imagine store weigh disappointed appear/appeared store weighs/weighed imagine 2c /ˈmʌʃrʊm / n. 蘑菇；伞菌 /tʌn/ n. 吨 Complete the passage with the correct forms of the words in the box. You may not realize it, but frogs play an important role in our ____________ ecosystem. The smallest frogs are about the size of a pea, while larger ones can grow as big as a human hand. Many people know that frogs help to ____________ farms by eating insects. ____________, not everyone understands their ____________ in nature. Frogs can live on ____________ and in water. Because of this, they are popular subjects in studies on climate change and the ecosystem. however important land planet protect planet's protect However importance land 2d /ˈklaɪmət/ n. 气候 /piː/ n. 豌豆 /rəʊl/ n. 作用；职能；角色 play a role (in) 在……中发挥作用； 扮演角色 Read 2d again and complete the tasks. 1. What role do frogs play in our ecosystem? ( ) A. An unimportant role B. An important role C. A destructive role 2. How small can the smallest frogs be? ( ) A. About the size of a pea B. As big as a human hand C. As big as a mouse 3. How do frogs help to protect farms? ( ) A. By pollinating plants B. By eating insects C. By loosening the soil B A B 12 4. Why are frogs popular subjects for studies on climate change and the ecosystem? ( ) A. Because they are brightly colored and easy to observe. B. Because they have a very long lifespan. C. Because they can live on both land and in water, making them sensitive (敏感的) to environmental changes. C 5. What is the main purpose of this passage? ( ) A. To tell a fun story about frogs. B. To describe the different sizes and appearances of frogs. C. To introduce the important role of frogs in the ecosystem and some of their key features. C 13 Language points Point 1 I can’t imagine my life without my pets. They mean a lot to me. imagine意为“想象”，后可接名词、代词或动词-ing形式作宾语。mean a lot to sb. 表示“对某人意义重大”。 常见例句： I can't imagine living without electricity. 我无法想象没有电的生活。 Point 2 You may not realize it, but frogs play an important role in our planet's ecosystem.你可能没有意识到，但青蛙在我们地球的生态系统中起着重要的作用。 play a role ( in ) ①(在…中)发挥作用;(在…中)有影响,其中 role 用作名词,意为“作用;职能;角色”。同义短语:play a part(in sth) e.g. Schools play an important role in education. 学校在教育中起着重要的作用。 ②扮演角色 e.g. He will play an important role in the movie. 他将在这部电影中扮演一个重要的角色。 Point 3 The smallest frogs are about the size of a pea, while larger ones can grow as bigas a human hand.最小的青蛙大约只有豌豆那么大，而大一点的青蛙能长到人类手掌那么大。 while 【连词】 ①而;然而 表示两种情况的对比。 e.g. I like coffee while my sister likes tea. 我喜欢喝咖啡,而我姐姐喜欢喝茶。 ②与……同时;当……的时候 引导时间状语从句,从句谓语动词须用延续性动词。它强调主句的动作是在从句动作发生的过程中发生的,或者主从句的动作几乎同时进行。 e.g. While we were talking, the teacher camein. 当我们在说话时,老师进来了。 e.g. I was doing my homework while my mother was cooking. 我妈妈在做饭时,我在做家庭作业。 Point 4 However, not everyone understands their importance in nature.然而,并不是每个人都了解它们在自然界中的重要性。 部分否定 not与every及含有every的不定代词连用时表示部分否定,意为“并不是每个……都”。 e.g. Not everyone is interested in the movie. 并不是每个人都对这部电影感兴趣。 【拓展】① not 与 all 连用,意为“并不是所有的都;并不都”,表示部分否定。 e.g. Not all the students like English. 并不是所有的学生都喜欢英语。 ② not 与 both 连用,意为“并不是两个都”表示部分否定。 e.g. Both of them are not good at dancing.并不是他们两个都擅长跳舞。 Point 5 1. -ance 规则：通常加在动词后面 ，构成抽象名词表示行为、状态、性质等 。 e.g. perform（v.表演；执行 ）→ performance（n.表演；表现 ） appear（v.出现；显得 ）→ appearance（n.出现；外貌 ） The rules for forming nouns with the suffixes -ance, -(t)ion, -ness, -ity: 2. -(t)ion 规则：通常加在动词后，构成名词表示行为、过程或结果。 e.g. educate（v.教育 ）→ education（n.教育 ） decide（v.决定 ）→decision（n.决定 ） imagine（v. 想象 ）→ imagination（n. 想象力） 18 3. -ness 规则：通常加在形容词后，构成抽象名词表示形容词所描述的性质、状态。 e.g. happy（adj.幸福的；快乐的 ）→ happiness（n.幸福；快乐 ） kind（adj.善良的 ）→ kindness（n.善良；仁慈 ） 4. -ity 规则：通常加在形容词后，(部分词需对词尾做适当变化 , 如去掉 不发音 -e 等)，构成名词，表示具有某种特性。 e.g. active（adj.积极的 ）→ activity（n.活动；活跃 ） possible（adj.可能的 ） → possibility（n.可能性 ） 19 Point 6 disappointed adj.失望的；沮丧的 一般不用于进行时。 由“disappoint (v. 使失望；使破灭) + -ed(后缀)”构成。 be disappointed with/in sb./sth.对某人/事失望 be disappointed at/by sth.对某事失望 be disappointed to do sth.对做某事感到失望 Disappointed? 失望？ (P36 1b) 20 disappointed disappointing “失望的；沮丧的”，通常表示人的主观感受。 “令人失望的；令人沮丧的”，通常表示事物自身具备的性质。 通常，-ed 形式的形容词表示人的(身体上 或精神上的)状态或人内心的感受，常意为“感 到……的”；而-ing形式的形容词则表示事物的 性质或特征，常意为“令人……的”。 【辨】disappointed与disappointing Point 7 in order to 为了；以便 表示目的，后接动词原形，可放在句首或句中，其否定形式为in order not to。 Teachers are strict with their students in order to help them make great progress.为了帮助学生取得巨大进步，老师对他们要求严格。 In order to store honey, they create honeycombs. 为了贮存蜂蜜，它们建造了蜂巢。 (P36 1b) 【拓】动词不定式和in order that 也可表示目的，两者有时可与in order to进行同义转换。 I worked hard to get good grades.=I worked hard in order that I could get good grades.=I worked hard in order to get good grades. 我努力学习以便能取得好成绩。 Exercises 单项选择 一、单项选择 ( )1. I was very ______ when I heard the bad news. A. angry B. anger C. angrily D. angrier ( )2. The little boy can’t ______ how big the world is. A. imagine B. imagine about C. imagine with D. imagine to ( )3. The old man likes to ______ his old photos in the box. A. store B. save C. enjoy D. hold ( )4. The ______ of the elephant is about 5 tons. A. high B. height C. weigh D. weight A A A D 二. 用方框中所给词的适当形式填空 in one’s hometown， play a role in， as…as…， in nature， the size of， live up to， do studies on 1. The new library is three classrooms put together. 2. My sister is not tall I am， but she is much stronger. 3. Regular exercise keeping our bodies healthy. 4. We can see many amazing sights ， like rainbows. the size of　 as　 as　 plays a role in　 in nature　 6. There is a beautiful park ， and I usually relax there on weekends. 7. She needs to her promise to finish the project on time. in my hometown　 live up to　 5. Scientists in this city how plants grow in different conditions(条件) last year. did studies on　 二、用所给单词的适当形式填空 1. The _____________ (appear) of the sun from behind the clouds made us happy. 2. We should show ____________ (kind) to the poor. 3. It's ___________ (importance) for us to learn a foreign language well. 4. The two cities are __________ (connect) by a railway. appearance kindness important connected 26 5. The little cat is one year old and (weight) one kilogram. 6. In autumn， you can find many (mushroom) in the forest. 7. (climate) change makes summers hotter and winters warmer. weighs　 mushrooms　 Climate　 8. Everyone went to the party John. He had to look after his little sister at home. except　 9. We all look for (happy) in our lives. 10. She felt (disappoint) with the results of the exam. 11. your help， we won’t be able to get there. 12. This truck(卡车) can carry several (ton) of goods. happiness　 disappointed　 Without　 tons　 三、 完成下列句子（每空一词）。 1. ——关于蓝鲸什么地方令人神奇？ ——它是世界上最大的动物。 —  　What’s　 amazing  　about　 the blue whale？ — It’s  　the　  　largest/biggest　 animal in the world. 2. 竹子是在中国绘画中最受欢迎的主题之一。 Bamboo is  　one　  　of　  　the　  　most　  　popular　  　subjects　 in Chinese paintings. 3. 竹子在中国似乎是非常受欢迎的植物。 Bamboo  　seems　  　to　  　be　 a very popular plant in China. What’s　 about　 the　 largest/biggest　 one　 of　 the　 most　 popular　 subjects　 seems　 to　 be　 一 二 三 4.这片雨林是许多珍稀动植物的家园。 This rainforest ___ ______ ___ many rare animals and plants. 5.为了照料庄稼，农民们每天早起。 Farmers get up early every morning ____ ______ ____ take care of their crops. 6.蜜蜂在授粉过程中发挥着重要作用。 Bees _____ ____ _________ _________ ___ the pollination process. in order to is home to play an important part/role in 30 7. 事实上，没有它们的工作，世界上大约80％的植物无法生长。 In fact， without their work， about  　80　  　per　  　cent　  　of　 the plants in the world cannot grow. 8. 然而，蜜蜂的数量在下降，科学家们很担心。 However，  　the　  　number　  　of　 bees  　is　 dropping， and scientists are worried. 80　 per　 cent　 of　 the　 number　 of　 is　 9. 考虑你能做什么来保护地球上最神奇的动物之一。  　Think　  　about　 what you can do  　to　  　protect　 one of the most amazing animals on earth. Think　 about　 to　 protect　 一 二 三 本课句型 Summary 我都 学会了! Key words Expression happiness; disappoint; mushroom; ton; role; pea; climate play a part (in sth); be home to sb / sth; play a role (in) You may not realize it, but frogs play an important role in our planet's ecosystem. The smallest frogs are about the size of a pea, while larger ones can grow as bigas a human hand. Sentences Basic (必做) Read the textbook or use the dictionary to find more nouns that end with -ance, -(t)ion, -ness, and -ity. Improving(选做) 2. Draw your own mind map about frogs. Then write a short passage based on the mind map about frogs. Extend (选做) 3.Find more information about frogs and share it with friends. Homework Thank you ! $