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第3课时　Section A Grammar Focus(3a-3c)
一、教学目标
1.能够识别和使用形容词和副词的最高级形式。
2.理解并应用形容词和副词最高级的变化规则。
3.在实际语境中正确使用形容词和副词最高级。
二、核心语言知识
1.核心词汇:
单词:
land;rose;butterfly;wing;weigh;believe
短语:
a symbol of hope and long life;thousands of;take a walk
2.核心句式:
(1)The blue whale is the largest and the heaviest animal in the world.
(2)The biggest land animal in the world is the African elephant.
(3)The cheetah runs the fastest among all land animals.
(4)I think the most useful plant in the world is bamboo.
(5)It is perhaps the most interesting plant in the world.
3.教学重难点:
(1)形容词、副词最高级的构成方式,包括规则变化和不规则变化。
(2)最高级常见句式结构。
三、教学过程
学习活动 效果评价
◆Step 1　Lead-in Play a video about the world's most extreme landmarks,such as the tallest building,the deepest ocean trench,the longest Great Wall,etc.After the video ends,ask students:What did you see in the video Can you describe them in English Guide students to try describing the characteristics of what they saw in English,thereby introducing the topic of superlative adjectives and adverbs. 从学生的课堂反应来看,视频播放时学生注意力高度集中,对提问积极回应,多数学生能尝试用简单英语描述看到的事物,成功地引发了学生对课程内容的兴趣。
设计意图:播放世界之最的视频,旨在通过极具视觉冲击力的画面,迅速吸引学生的注意力,激发他们的好奇心和学习兴趣。以直观的方式呈现最高级概念的实例,帮助学生在脑海中初步构建对 “最高级” 的感性认知,从而自然地引出本节课的主题。
◆Step 2　Presentation Work on 3a 1.Students read the sentences in 3a,observe the bold words,and then guide them to summarize the rules for forming the superlative adjectives and adverbs. 2.The teacher explains the rules for forming the comparative and superlative forms of adjectives and adverbs,and supplements with the superlative forms of irregular adjectives and adverbs. 3.Demonstrate how to use the superlative adjective and adverb correctly through example sentences. 教师观察学生是否能通过观察加粗单词总结出最高级的构成规则,并观察其对规则变化和不规则变化的理解与记忆情况,并检查学生整理语法的情况。
设计意图:通过引导学生自主发现规律、系统讲解规则变化及补充不规则变化,并结合例句展示,帮助学生全面掌握最高级的构成与使用,提升其语言归纳与应用能力。
◆Step 3　Practice Work on 3b and 3c 1.Students independently complete the exercises in 3b and 3c while the teacher makes rounds to provide guidance. 2.Randomly ask students to answer,and then correct the answers collectively. 教师观察学生独立完成练习的情况,评估其对最高级形式的掌握程度和运用能力。
设计意图:通过独立练习和巡视指导,帮助学生巩固所学知识,培养其自主学习能力;通过提问和集体订正,及时纠正错误,强化正确用法,确保学生扎实掌握最高级形式。
◆Step 4　Pair work 1.Ask students to describe their favourite animals,plants or other things using superlative adjectives or adverbs. 2.Students work in pairs and share their ideas with each other.The teacher selects several groups to come to the stage and share their ideas. 教师观察学生是否能正确运用最高级形式描述事物,评估其语言表达能力和在实际应用中对最高级的掌握程度。
设计意图:通过描述和分享活动,帮助学生将最高级应用于实际语境,提升其语言表达能力和沟通技巧,同时通过小组合作和上台展示增强学生的参与感和自信心。
板书设计 Unit 4　Amazing Plants and Animals 第3课时　Section A Grammar Focus(3a-3c) 一、形容词和副词的最高级的变化规则: 变化规则示例一般情况,在词尾加-esttall—tallest　short-shortest以字母e 结尾的词,在词尾加-stnice—nicest　large—largest重读闭音节词尾只有一个辅音字母时,先双写该辅音字母,再加-estbig—biggest　hot—hottest以 “辅音字母 +y” 结尾的双音节词,先把“y”改为“i”,再加-esthappy—happiest　busy—busiest部分双音节词和多音节词,在词前加mostbeautiful—most beautiful　expensive—most expensive不规则变化good/well—best　bad/badly—worst　many/much—most　little—least　far—farthest/furthest
二、形容词和副词最高级的用法: (1)主语+谓语+ one of the+最高级+名词复数(+范围),意为“……是(……中)最……的之一”。 English is one of the most important languages.英语是最重要的语言之一。 (2)主语+谓语+ the+最高级+ of/in…(比较范围),意为“……之中,……是最……的”。若“范围”是与主语同范畴的词,用of;若为不同范畴的词,则常用in。 This picture is the best in the hall.这幅画是大厅里最好的。 Jim is the most outgoing of us all.吉姆是我们大家中最外向的。 (3)主语+谓语+ the+序数词+形容词的最高级+名词单数+ in…,意为“……是……中第几……”。 Hainan is the second largest island in China.海南是中国的第二大岛。 The Yellow River is the second longest river in China.黄河是中国第二长河。 (4)疑问词(Which/Who)+(名词+)谓语+ the+最高级,A,B or C 意为“A、B、C哪个最…… ” Which city is the biggest,Beijing,Shanghai or Tianjin
课堂评价
作业布置
必做: 1.Summarize the differences between the comparative forms of and superlative forms of adjectives and adverbs. 2.Construct a sentence using a superlative adjective or adverb.This sentence should describe the “most” thing in a certain field that you think,such as the biggest,the fastest,the tallest,etc. 选做: Create a “World's Greatest”poster and describe it using superlative adjectives or adverbs.
教学反思
　　在本节课的教学中,通过引导学生讨论世界之最引入了最高级概念,成功激活了学生的已有知识,为深入学习奠定了基础。通过观察学生自主总结最高级的变化规则和参与练习的情况,大部分学生能够较好地掌握规则变化,但在不规则变化的记忆和实际运用中仍存在一些困难。

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