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形容词是历年来中考的热点。现将形容词易出错的6个知识点归纳如下，供同学们复习时参考。
易错点一：-ing形容词和-ed形容词的混用
例1. Have you heard of the excited news? (×)
Have you heard of the exciting news? (√)
例2. I am surprising at the story. (×)
I am surprised at the story. (√)
【分析】-ing形容词表示主动意义，多指事物对人的影响，一般修饰事物；-ed形容词表示被动意义，多指人对事物的感受，主语一般是人，常用于“sb.+-ed形容词+介词”结构。例1中所修饰的词是news，所以excited应改为exciting；例2中主语是人，所以surprising应改为surprised。
【知识归纳】初中阶段类似以上用法的形容词还有：interesting/interested， pleasing/pleased， frightening/
frightened，moving/moved，tiring/tired，boring/bored，amazing/amazed.
易错点二：比较对象前后不一致
例3. The population of Shanghai is larger than Beijing. (×)
The population of Shanghai is larger than that of Beijing. (√)
例4. The weather in Beijing is nicer than Shanghai. (×)
The weather in Beijing is nicer than that of Shanghai. (√)
【分析】以上所犯错误主要是比较对象前后不一致。
例3中的比较对象是上海和北京两地的人口，所以应该把Beijing改为that of Beijing ; 同样例4中的比较对象是上海和北京两地的天气，所以应该把Shanghai改为that of Shanghai。
易错点三：形容词修饰不定代词的位置
例5. You’d better not read today’s newspaper because there is special nothing in it. (×)
You’d better not read today’s newspaper because there is nothing special in it. (√)
例6. Jack, come here, please. I have important something to tell you. (×)
Jack, come here, please. I have something important to tell you. (√)
【分析】形容词修饰不定代词时，要位于其后，做后置定语。故例5中special nothing应改为nothing special; 例6中important something 应改为something important 。
易错点四：同一范围内比较对象相互重复
例7. He comes earlier than any student in our class. (×)
He comes earlier than any other student in our class. (√)
例8. China is bigger than any other country in Africa. (×)
China is bigger than any country in Africa. (√)
【分析】同一范围内个体的比较要在形容词后加other，he和student都是class范围内的，故加other；不同范围内个体的比较无须加other，China不是Africa范围内的，故不加other。
易错点五：形容词最高级前何时加the
例9. He is our the best teacher. (×)
He is our best teacher. (√)
【分析】形容词最高级前通常要加the。但是，当形容词最高级前有物主代词、指示代词、名词所有格等限定词修饰时，最高级前不加the。
易错点六：形容词在句中所做的成分
例10. He is an alone man. (×)
He is alone. (√)
【分析】一般情况下形容词既能做定语，又能做表语和宾语补足语，但是以“a-”开头的形容词只能在句中做表语。故例10应改为：He is alone.类似的形容词还有：alike，afraid，alive，awake，asleep等。
易错点一：-ing形容词和-ed形容词的混用
例1. Have you heard of the excited news? (×)
Have you heard of the exciting news? (√)
例2. I am surprising at the story. (×)
I am surprised at the story. (√)
【分析】-ing形容词表示主动意义，多指事物对人的影响，一般修饰事物；-ed形容词表示被动意义，多指人对事物的感受，主语一般是人，常用于“sb.+-ed形容词+介词”结构。例1中所修饰的词是news，所以excited应改为exciting；例2中主语是人，所以surprising应改为surprised。
【知识归纳】初中阶段类似以上用法的形容词还有：interesting/interested， pleasing/pleased， frightening/
frightened，moving/moved，tiring/tired，boring/bored，amazing/amazed.
易错点二：比较对象前后不一致
例3. The population of Shanghai is larger than Beijing. (×)
The population of Shanghai is larger than that of Beijing. (√)
例4. The weather in Beijing is nicer than Shanghai. (×)
The weather in Beijing is nicer than that of Shanghai. (√)
【分析】以上所犯错误主要是比较对象前后不一致。
例3中的比较对象是上海和北京两地的人口，所以应该把Beijing改为that of Beijing ; 同样例4中的比较对象是上海和北京两地的天气，所以应该把Shanghai改为that of Shanghai。
易错点三：形容词修饰不定代词的位置
例5. You’d better not read today’s newspaper because there is special nothing in it. (×)
You’d better not read today’s newspaper because there is nothing special in it. (√)
例6. Jack, come here, please. I have important something to tell you. (×)
Jack, come here, please. I have something important to tell you. (√)
【分析】形容词修饰不定代词时，要位于其后，做后置定语。故例5中special nothing应改为nothing special; 例6中important something 应改为something important 。
易错点四：同一范围内比较对象相互重复
例7. He comes earlier than any student in our class. (×)
He comes earlier than any other student in our class. (√)
例8. China is bigger than any other country in Africa. (×)
China is bigger than any country in Africa. (√)
【分析】同一范围内个体的比较要在形容词后加other，he和student都是class范围内的，故加other；不同范围内个体的比较无须加other，China不是Africa范围内的，故不加other。
易错点五：形容词最高级前何时加the
例9. He is our the best teacher. (×)
He is our best teacher. (√)
【分析】形容词最高级前通常要加the。但是，当形容词最高级前有物主代词、指示代词、名词所有格等限定词修饰时，最高级前不加the。
易错点六：形容词在句中所做的成分
例10. He is an alone man. (×)
He is alone. (√)
【分析】一般情况下形容词既能做定语，又能做表语和宾语补足语，但是以“a-”开头的形容词只能在句中做表语。故例10应改为：He is alone.类似的形容词还有：alike，afraid，alive，awake，asleep等。