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课件网) Comparative Structures of Adjectives and Adverbs The rules of comparative degree 比较级的变化规则 规则变化： 1.单音节形容词和部分双音节词，一般在词尾加-er。 2.以字母e结尾的词，在词尾直接加-r。 3.重读闭音节词词尾只有一个辅音字母，元音发短音时，双写尾字母，再加er。 4.以"辅音字母+y"结尾的双音节词，变"y"为"i"，再加-er。 5.多音节词和部分双音节词，在词前加"more"。 不规则变化： good/well-better，bad/badly-worse Task 1.Talk anything about your classmate. 2.The student who was talked about just now must go on talking. 3.Use the comparative degrees. A B Q:What information can you require from the two line 1. Line B is three times as long as line A. 2. Line B is three times longer than line A. 3. Line B is three times the length of line A. 1m 3m 总结：倍数的表达 1.A+be+倍数+as+形容词原级+as+B 2.A+be+倍数+形容词比较级+than+B 3.A+be+倍数+the+性质名词+of+B 性质名词：size，weight，width, depth，length 等 注意：倍数要放在前面 【即学即练】 2.36m 1.26m Mongol is about twice as tall as the superman. Mongol is about twice the height of the superman. Mongol is about twice taller than the superman. The old woman is twenty times as old as her granddaughter. Or we can say: The old woman is twenty times older than her granddaughter. The old woman is about twenty times the age of her granddaughter. Look at the picture, if the baby is 3 years old, while her grandmother is 60 years old. We can say: 1.You are growing taller and taller. 2.Our country is getting more and more powerful. 3.In spring days get longer and longer, 比较级+ and + 比较级 越来越... The structure is used to say one thing is changing. 4.表示自身程度的改变“越来越……”时，用“比较 级+and+比较级”结构表示。例如： The weather is getting colder and colder. The little girl becomes more and more beautiful. 天气变得越来越冷。 这个小女孩变得越来越漂亮。 1.The harder you work, the more progress you will make. 2.The more careful you are, the fewer mistakes you will make. 3.The more you preatise, the more fluently you will speak. The + 比较级... , the +比较级... 越... 就越... The structure is used to say two things are changing together. 3.表示一个方面随另一个方面的程度而变化时，用 “the +比较级（+主语+谓语），the +比较级（+主 语+谓语）”的结构。 例如： The harder he works, the happier he feels. The harder you study, the more knowledge you will get. 他工作越努力，他觉得越快乐。 你学习越刻苦，你学到的知识就越多。 Underline the comparative expressions and circle the adverbs used to give more information about the comparative expressions. 1.Come a bit closer. 2.We need rather more than that. 3.It weighs a little more than before. 4.It’ll be a lot heavier than magnesium. 5.Is it any heavier 6.We need a piece which is (very) much bigger than that. 比较级的修饰语： 在比较级的前面可以加上如下一些表示程度的状 语，但要注意其含义的差别。 a) any加比较级, 表示疑问程度，意为“……一些”， “……一点”。例如： b) no/not (any)加比较级, 表否定程度，意为“并不”。 例 ... ...
