(
课件网) Unit 4 Amazing Animals and Plants Section A Grammar Focus 3a—3c To learn to make comparisons using superlatives. To talk about some amazing plants. Objectives 形/副词最高级的构成（规则变化） 构成方法 原级 最高级 多音节词和部分双音节词 在词前加most comfortable carefully most comfortable most carefully Tips: 由“动词+-ed”或“动词+-ing”构成的形容词变最高级时，通常在该形容词前加 most。 interesting→most interesting relaxed→most relaxed exciting→most exciting boring→most boring 原级 最高级 good/well best bad/badly/ill worst many/much most little least far farthest/furthest old oldest/eldest 形/副词最高级的构成（不规则变化） Grammar Focus 3a Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb The blue whale is the largest and heaviest animal in the world. The biggest land animal in the world is the African elephant. The cheetah runs the fastest among all land animals. I think the most useful plant in the world is bamboo. It is perhaps the most interesting plant in the world. large — largest heavy — heaviest big — biggest fast — fastest useful — the most useful interesting — the most interesting Observe the words and find the rules. The superlative forms of adjectives and adverbs. fast short high light tall slow 直接加- est heavy easy happy hungry early funny 把y 变 i 再加- est 规则变化 A B 写出下列形容词或副词的最高级 1.creative _____ 2.beautifully _____ 3.big _____ 4.funny _____ 5.quiet _____ 6.good _____ 7.little _____ 8.bad _____ most creative most beautifully biggest funniest quietest best least worst 最高级的常用句型（一） ◆ “主语+ be+ the+形容词最高级+in/of 短语”意为 “……是……中最……的”。 ◆ “主语+实义动词（+the）+副词最高级+in/of 短语”意为 “……是……中最……的”。 ◆ “主语+be+ one of the+形容词最高级+可数名词复数+in/of 短语”意为“……是……中最……的……之一”。 My mother is the busiest one in my family. The Yangtze River is the longest river in China. Tom works (the) hardest in Class 3. Tianjin is one of the biggest cities in China. large late nice 加- st biggest thinnest hottest wettest fattest big thin hot wet fat “双写” 最后一个辅音字母再加-est C D 最高级的常用句型（二） ◆ “疑问词+ be+ the+形容词最高级，甲、乙or丙？”用于三个或三个以上的人或事物之间的比较。 ◆ “疑问词+助动词+主语+动词原形（+the)+副词最高级，甲、乙or丙？” ◆ “主语+be + the+序数词+形容词最高级+可数名词单数+in/of短语”意为“……在…… 中是第几……的……”。 Who is the tallest, Tom, Kate or Bill Which city do you like best, Beijing, Shanghai or Guangzhou The Yellow River is the second longest river in China. New words land /l nd/ n. 陆地；土地 v. 降落；着陆 African / fr k n/ adj. 非洲的；非洲人的 n. 非洲人 rose /r z/ n. 玫瑰；蔷薇 peony / pi ni/ n. 牡丹；芍药 lotus / l t s/ n. 莲花 butterfly / b t fla / n. 蝴蝶 wing /w / n. 翅膀；翼 New words frog /fr ɡ/ n. 蛙；青蛙 weigh /we / v. 有......重；称重量 kg (=kilogram;kilogramme) ... ...
