Unit4 Amazing Plants and Animals Section A 教学设计 2025-2026学年人教版八年级英语上册

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Unit4 Amazing Plants and Animals Section A 教学设计 2025-2026学年人教版八年级英语上册

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Unit4 Amazing Plants and Animals Section A 教学设计
一、核心素养目标
1. 语言能力
掌握“describe animals/plants”相关词汇(如amazing, unusual, alive, cover, protect, provide等)及句型“it’s + adj. + that…”, “They can…”, “It uses…to…”;能听懂动物植物特性的简短对话与独白,读懂相关介绍性文本;能运用目标词汇和句型简单描述一种奇特的动植物,做到语句通顺、语义连贯。
2. 文化意识
了解中外著名的奇特动植物及其生存环境,感受不同地域生物的多样性;培养尊重自然、保护生物的意识,体会人与自然和谐共生的重要性。
3. 思维品质
通过观察图片、分析文本信息,培养逻辑推理能力;在描述动植物特性时,学会从外形、功能、生活习性等角度有序思考,提升结构化表达能力。
4. 学习能力
掌握“借助语境猜测生词”“略读找主旨、细读找细节”的阅读方法;积极参与小组合作活动,学会倾听他人观点并补充自己的想法,提升自主与合作学习能力。
二、教学重难点
1. 教学重点
1. 核心词汇:amazing, unusual, alive, cover, protect, provide, avoid, danger, position, shoot等。2. 重点句型:① It’s amazing that… ② They can… to… ③ It uses… to help… ④ When…, it will… 3. 阅读技能:获取动植物特性的细节信息,理清文本说明顺序。
2. 教学难点
1. 正确运用“it’s + adj. + that…”句型表达感叹,区分“it’s + adj. + for sb. to do sth.”的用法差异。2. 用“can/uses…to…”“in order to”等结构连贯描述动植物的功能与习性。3. 结合语境准确理解“alive/living/live”“protect/defend”等易混词的用法。
三、教学环节
(一)Lead-in:情境导入,激发兴趣
1. 多媒体展示三张极具视觉冲击力的图片:① 会“跳舞”的跳舞草 ② 能捕食昆虫的猪笼草 ③ 遇到危险会装死的负鼠。教师提问:“Look at these pictures. Do you know these plants or animals What’s unusual about them ” 2. 师生互动:邀请学生自由发言,用简单英语或中文描述图片内容。教师对学生的回答给予肯定,如“Great! You know a lot. The dancing grass can move like dancing. That’s really amazing.” 并自然引出本单元主题“Amazing Plants and Animals”,同时板书核心形容词“amazing, unusual”。3. 快速提问:“What other amazing plants or animals do you know Share with your partner.” 学生两人一组交流,随后邀请2-3组代表分享,教师适时补充词汇,如“panda, cactus, penguin”等,为后续学习铺垫。
(二)Pre-reading:扫清障碍,铺垫新知
1. 词汇预热:① 呈现核心词汇的图片、词根或语境例句,引导学生猜测词义。如展示“盾牌”图片引出“protect”,结合句子“The mother bird protects her babies.”理解含义;用“a tree covers the ground”的图片解释“cover”。② 开展“Quick Match”活动:屏幕左侧列出词汇,右侧列出释义,学生快速抢答匹配,如“amazing—令人惊奇的”“avoid—避免”“danger—危险”。2. 句型感知:播放一段简短的动物介绍视频(如变色龙变色),视频结尾出现句子“It’s amazing that the chameleon can change its color.” 教师带领学生朗读该句,强调“it’s + adj. + that…”的结构和语气,随后给出两个简单情境,让学生尝试造句,如“(熊猫会爬树)It’s amazing that pandas can climb trees.” 3. 预测文本:展示Section A 3a的课文标题“Amazing Plants”和三张插图(捕蝇草、仙人掌、竹子),提问:“What do you think the passage will talk about What’s special about these plants ” 学生自由猜测,培养阅读预测能力。
(三)While-reading:分层阅读,获取信息
1. 略读(Skimming):学生快速阅读3a课文,完成任务“Find the main idea of the passage.” 选项:A. Different kinds of amazing plants. B. How to grow amazing plants. C. The history of amazing plants. 师生核对答案后,教师引导学生总结略读技巧——关注标题、首句和插图。2. 细读(Scanning):① 分任务阅读:将学生分为三组,每组聚焦一种植物(捕蝇草、仙人掌、竹子),找出该植物的“unusual features”(奇特特征)和“how it survives”(生存方式),完成表格(教师口头呈现任务,学生记录关键词)。② 小组汇报:每组派代表分享找到的信息,如“Group 1: The Venus flytrap can catch insects. It closes its leaves quickly when an insect touches it.” 教师在黑板上板书核心信息,并用不同颜色标注重点句型,如“It can… When…, it will…” 3. 精读(Intensive reading):针对课文难点句进行解析。如“It’s hard to believe that there are so many unusual plants.” 讲解“it’s hard to believe that…”的用法;“Some plants can even live without water for a long time.” 区分“live”在此处为“生存”,与“live in Beijing”中的“居住”含义不同。引导学生结合上下文理解“alive”在“Keep the plant alive”中的用法,对比“living things”“a live fish”的差异。
(四)While-speaking:以读促说,巩固运用
1. 句型操练:开展“Chain Drill”活动。教师开头:“It’s amazing that the Venus flytrap can catch insects.” 学生A接:“It’s amazing that the cactus can live without water.” 学生B接:“It’s amazing that bamboo grows very fast.” 依次传递,鼓励学生运用不同动植物话题。2. 小组讨论:给出话题“What’s your favorite amazing animal Describe it with 3 sentences.” 提示从“外形(look like)、能力(can do)、习性(usually do)”角度描述。如“My favorite amazing animal is the penguin. It looks like a little gentleman in black and white. It can swim very fast but can’t fly. It usually lives in cold places.” 3. 展示交流:每组邀请1名学生上台分享,教师进行点评,重点关注目标词汇和句型的运用准确性,如纠正“Penguin can swim”应为“Penguins can swim”,补充“it uses its wings to swim”等表达。
(五)Post-reading:归纳总结,拓展提升
1. 知识归纳:师生共同梳理本课时核心内容,教师引导学生完成以下总结:① 描述动植物的核心形容词:amazing, unusual, strong, brave, rare;② 表达能力/功能的句型:a. It’s + adj. + that… b. They/It can… to… c. It uses… to… d. It can live… without… ③ 易混词区分:alive(表语,如The plant is alive.)、living(定语,如living plants)、live(定语,仅修饰物,如a live show);protect(保护,常与from连用,如protect sb. from danger)、provide(提供,provide sth. for sb.)。2. 价值观引导:播放一段“保护珍稀动植物”的短视频,提问:“Why should we protect these amazing plants and animals ” 学生自由发言后,教师总结:“All living things are important for our earth. We should love nature and protect them.” 3. 拓展任务:布置“Mini Survey”作业——课后采访3名同学,询问他们喜欢的奇特动植物及原因,用英语记录下来,下节课分享。
四、重点知识归纳
1. 核心词汇
(1)形容词:amazing(令人惊奇的,修饰事物)、unusual(不寻常的,反义词usual)、alive(活着的,常作表语)、dangerous(危险的,名词danger)、strong(强壮的,反义词weak)。(2)动词:cover(覆盖,cover…with…用……覆盖)、protect(保护,protect…from…保护……免受……)、provide(提供,provide sth. for sb. = provide sb. with sth.)、avoid(避免,avoid doing sth. 避免做某事)、shoot(射击;发芽,此处结合课文指植物生长)。(3)名词:danger(危险,in danger处于危险中)、position(位置,take a position占据一个位置)、insect(昆虫)、desert(沙漠)。
2. 重点句型
(1)感叹句型:It’s + adj. + that… 表示“……是多么……啊”。例:It’s amazing that the plant can eat insects. (2)能力表达:主语 + can + 动词原形 + 其他。例:Penguins can swim very fast. (3)目的/功能表达:① 主语 + uses + 某物 + to + 动词原形 + 其他(用某物做某事)。例:The bird uses its beak to catch food. ② 主语 + can + 动词原形 + to + 动词原形 + 其他(做某事来……)。例:The cactus stores water to live in the desert. (4)条件/时间状语从句:When/If + 从句(一般现在时),主句(一般将来时/情态动词)。例:When an insect touches the leaf, the plant will close it quickly.
3. 阅读技巧
(1)略读:关注标题、插图、段落首句,快速获取主旨。(2)细读:带着具体问题找关键词、关键句,如时间、地点、特征等。(3)猜词:结合上下文语境或图片、词根词缀猜测生词含义,如“un-”前缀表否定,“unusual”即“不寻常的”。
五、练习题
1. 词汇运用:根据句意及首字母提示填写单词,使句子完整通顺。
(1)It’s a________ that the little boy can speak three languages. (2)The desert is very dry, but some plants can live there because they are u________. (3)We should p________ the animals in danger, or they will disappear. (4)The big tree c________ the whole yard, so we can sit under it to cool down. (5)When you walk in the forest, you should avoid t________ the unknown plants.
2. 句型转换:按要求改写下列句子,每空一词。
(1)The panda can climb trees. It’s amazing.(合并为一句)______ ______ ______ that the panda can climb trees. (2)The Venus flytrap catches insects with its leaves.(改为同义句)The Venus flytrap ______ its leaves ______ ______ insects. (3)When the dog feels danger, it will bark loudly.(改为简单句)The dog ______ ______ loudly when it feels danger. (4)We should protect the animals. We want to keep the nature balanced.(合并为目的状语从句)We should protect the animals ______ ______ keep the nature balanced.
3. 单项选择:从A、B、C、D四个选项中选出最佳答案。
(1)—What do you think of the dancing grass —It’s ______! It can move with the music. A. usual B. amazing C. boring D. dangerous (2)It’s important ______ us ______ protect the rare plants. A. for; to B. of; to C. for; for D. of; for (3)Some animals ______ their babies ______ danger by hiding them in holes. A. provide; with B. protect; from C. avoid; from D. cover; with (4)—Is the fish ______ or dead —It’s still moving. A. living B. alive C. live D. lively (5)Bamboo ______ very fast and it ______ to make many things like chairs and paper. A. grows; is used B. grows; uses C. grow; is used D. grow; uses
4. 阅读理解:阅读下面短文,完成文后问题。
The Komodo dragon is one of the most amazing animals in the world. It lives in some islands of Indonesia. It looks like a big lizard. An adult Komodo dragon can be 3 meters long and weigh 150 kilograms. It’s a very strong animal. Komodo dragons are carnivores, which means they eat meat. They can run fast for a short time to catch other animals like deer and pigs. They also have a special ability: their saliva(唾液)has dangerous bacteria(细菌). When they bite an animal, the bacteria will make the animal sick and die soon. Then the Komodo dragon can eat it. It’s interesting that Komodo dragons can live without food for up to a month. But now, Komodo dragons are in danger because people cut down too many trees and their living places are getting smaller. We need to do something to protect them. (1)Where do Komodo dragons live (2)What does an adult Komodo dragon look like (3)Why can Komodo dragons make animals sick after biting them (4)How long can Komodo dragons live without food (5)Why are Komodo dragons in danger now
5. 书面表达:请根据提示,写一段介绍你喜欢的奇特动物的短文,不少于60词。
提示:① 动物名称;② 外形特征;③ 奇特能力;④ 你的感受。
六、参考答案及解析
1. 词汇运用
(1)amazing 解析:句意为“这个小男孩会说三种语言,真是令人惊奇”。结合语境及首字母a,填amazing(令人惊奇的)。(2)unusual 解析:句意为“沙漠非常干燥,但有些植物能在那里生存,因为它们很特别”。由“能在沙漠生存”可知植物“不寻常”,填unusual。(3)protect 解析:句意为“我们应该保护濒危动物,否则它们会消失”。“保护”为protect,should后接动词原形。(4)covers 解析:句意为“这棵大树遮住了整个院子,所以我们可以坐在下面乘凉”。主语the big tree为第三人称单数,“覆盖”用covers。(5)touching 解析:句意为“当你在森林里行走时,应避免触摸未知植物”。avoid后接动词-ing形式,“触摸”为touch,填touching。
2. 句型转换
(1)It’s amazing 解析:将两句话合并为感叹句型“it’s + adj. + that…”,“令人惊奇的”为amazing,故填It’s amazing。(2)uses; to catch 解析:原句“捕蝇草用叶子捕捉昆虫”,“用某物做某事”为use sth. to do sth.,主语为第三人称单数,use变为uses,“捕捉”为catch,故填uses; to catch。(3)will bark 解析:原句为when引导的时间状语从句,主句用一般将来时,结构为“will + 动词原形”,故填will bark。(4)in order to 解析:原句“我们应该保护动物,我们想保持生态平衡”,合并为“为了保持生态平衡,我们应该保护动物”,“为了”用in order to,故填in order to。
3. 单项选择
(1)B 解析:由“它能跟着音乐动”可知跳舞草很“令人惊奇”,A“寻常的”、C“无聊的”、D“危险的”均不符合语境,故选B。(2)A 解析:考查固定句型“it’s + adj. + for sb. to do sth.”,此处“important”修饰“protect the rare plants”这件事,用for,故选A。(3)B 解析:句意为“有些动物通过把幼崽藏在洞里来保护它们免受危险”。protect…from…为固定搭配,意为“保护……免受……”,符合语境,故选B。(4)B 解析:由“它还在动”可知问句询问“这条鱼是活的还是死的”。alive常作表语,living常作定语,live仅修饰物,lively“活泼的”,故选B。(5)A 解析:bamboo为不可数名词,作主语时谓语动词用第三人称单数grows;“被用来做某事”为be used to do sth.,故选A。
4. 阅读理解
(1)They live in some islands of Indonesia. 解析:由短文第二句“It lives in some islands of Indonesia.”可知答案,注意主语变为复数they,live用原形。(2)An adult Komodo dragon can be 3 meters long and weigh 150 kilograms. It looks like a big lizard. 解析:从文中“An adult Komodo dragon can be 3 meters long and weigh 150 kilograms. It looks like a big lizard.”可直接获取信息。(3)Because their saliva has dangerous bacteria. 解析:根据“They also have a special ability: their saliva has dangerous bacteria. When they bite an animal, the bacteria will make the animal sick and die soon.”可知原因是唾液中含有危险细菌。(4)They can live without food for up to a month. 解析:由“It’s interesting that Komodo dragons can live without food for up to a month.”可知答案。(5)Because people cut down too many trees and their living places are getting smaller. 解析:从“But now, Komodo dragons are in danger because people cut down too many trees and their living places are getting smaller.”可找到原因。
5. 书面表达
参考范文:My Favorite Amazing Animal My favorite amazing animal is the firefly. It is a small insect with soft wings. At night, its tail can give out bright green light, which looks like a little star in the dark. I think this is its most unusual ability. Fireflies usually fly together, and their lights make the garden very beautiful. It’s amazing that such a small insect can produce light by itself. I love fireflies because they bring magic to the night. 解析:范文围绕“萤火虫”展开,先介绍名称,再描述外形(small insect with soft wings),接着说明奇特能力(tail gives out bright light),最后表达感受(amazing, bring magic),符合提示要求,且运用了本课时核心句型“It’s amazing that…”,语言流畅自然。
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