Unit 5 understanding ideas 课件2025-2026学年外研版英语七年级下册

Unit 5 Amazing nature Lesson 3 Understanding ideas (2) Read and observe. Rules? high higher highest amazing more amazing most amazing quiet quieter quietest 国家中小学课程资源 2 英语中应该怎样表达比较呢？首先请大家看下面的例句： The Yangtze River is longer than the Yellow River. 长江比黄河长。 London is bigger than Cambridge.伦敦比剑桥大。 Grammar --形容词，副词的比较级和最高级（教材126页） 从这两个例句中，大家发现了什么规律： ★两者进行比较时，形容词，副词使用比较级形式。 ★形容词比较级之后要用than引出比较的对象。 ★形容词比较级在形式上有一定变化规律，大体分为规则变化和不规则变化两种。 The plateau is quieter than the big cities.高原地区比大城市更安静。 在表示“A比B……”时，我们用A is... than B，但最高级表达的是三个及三个以上事物的比较状况，所以后面通常用in/of/among来表示比较的范围。 It is famous for the world’s highest mountain. But this area is also full of the most amazing colours in nature. He is the tallest in our class. She lives (the)closest to school of all my classmates. 形容词的最高级前通常要加定冠词the; 副词的最高级前可加，也可不加。 Grammar Form-Regular规则变化 形容词 构成方法 原级 比较级 最高级 单音节和少数双音节单词 一般在词尾+er/est long, fast(adj.) longer, faster longest, fastest 以e结尾直接+r/st large, late(adj.) larger, later largest, latest 以重读闭音节结尾的词，如末尾只有一个辅音字母，应双写该字母+er/est big, hot, thin bigger, hotter, thinner biggest, hottest, thinnest 以“辅音字母+y”结尾，先变y为i，再+er/est busy, easy, early(adj.) busier, easier, earlier busiest, easiest, earliest 大部分双音节和多音节单词 在单词前加more / most famous, beautiful more famous, more beautiful most famous, most beautiful 副词 构成方法 原级 比较级 最高级 单音节和少数双音节单词 一般在词尾+er/est hard, fast(adv.) harder, faster hardest, fastest 以e结尾直接+r/st late(adv.) later latest 以“辅音字母+y”结尾，先变y为i，再+er/est early(adv.) earlier earliest 大部分双音节和多音节单词 在单词前加more / most quickly, carefully, strongly more quickly, more carefully, more strongly most quickly, most carefully, most strongly Form-Regular规则变化 Form-Irregular不规则变化 原级 比较级 最高级 good, well better best bad/ill, badly worse worst many/much more most little less least far farther farthest 设计意图：帮助学生构建有关比较级与最高级构成的结构化知识。 shorter higher highest Read and complete. Which fact interests you the most? Complete the facts about wonders in China using comparatives and superlatives. 国家中小学课程资源 8 shorter most famous slow faster high highest Read and complete. 国家中小学课程资源 A +be/动词+比较级+ than+ B，（A比B更……） Tom is taller than me. He runs faster than her brother. Who / Which + be/动词 +比较级, A or B ?（A和B，哪个更……） Which is bigger, the sun or the moon? Who is more outgoing, Lucy or Sally? 比较级 + and +比较级（越来越……） It’s getting hotter and hotter. the + 形容词比较级…, the + 形容词比较级…（越…就越…） The harder you work, the higher grade you will get. Grammar-sentence structure of comparatives(比较级) 设计意图：帮助学生构建有关比较级与最高级构成的句子结构化知识。可以作为选用 Who / Which + be +the 最高级, A,B or C ?（三者或以上程度最高） Who is the tallest, Tom, Jack, or David? be + the +最高级+in /of / among +范围（在……中是最……的） Lucy is the youngest in her class. be + one of the + 最高级 + 复数名词（最……的……之一） The yellow river is the longest river in China. be +the + 序数词 +最高级 +单数名词 + 范围（是…….的第几……） It is the second largest city in China. Grammar-sentence structure of superlatives(最高级) 设计意图：帮助学生构建有关比较级与最高级构成的句子结构化知识。可以作为选用 Describe the most beautiful natural place What is the most beautiful natural place in your opinion? 设计意图：引导学生运用所学语言表达及目标语法介绍自己心目中最美丽的自然之地，让学生进一步体会自然之美，表达对自然的热爱之情。 Use the words and expressions from the reading passage and the Useful expressions to help you. Work in pairs. Talk about the most beautiful natural place in your opinion. It’s time for you to share the most beautiful place in your mind. 国家中小学课程资源 In my opinion, the most beautiful place is … It is in/on … P1 P1 P2 P3 … are … and …, like… Words can’t express my love for … It means … because… It is famous for… This area is also full of… 比较级 It is one of … in the world. In my heart, it’s better than any other place. I’m proud to say that … Work in pairs. Talk about the most beautiful natural place in your opinion. Question Answer What is it? the Great Barrier Reef Where is it? It is in Australia. What is it like? It's famous as the largest reef in the world. Why do you like it? There are so many colours there. The water is more clear and you can see different colours of the reef and fish! Work in pairs and describe the most beautiful natural place Aspects Criteria Self-check (tick √) Peer-check Content Include: what it is, where it is, what it is like, why you like it (4’) Language Use some of the given expressions. (2’) Use comparatives and superlatives.(2’) Delivery Speak loudly and fluently. (1’) Make eye contacts. (1’) 设计意图：在问题的引领下，师生一同建立评价标准，让学生成为评价活动的设计者、参与者与合作者，鼓励学生积极参与评价。学生基于评价量表，查漏补缺，“自评-互评-师评”，实现以评促学。 Evaluation form Unit 5 Amazing nature Lesson 3 Grammar 形容词副词比较级最高级 meaning form use : Compare two... S: compare more than two... regular irregular adj. adv. $