内容正文:
仁爱英语八上Unit6语法讲解及习题:
形容词比较级与最高级、名词后缀-ness
第一部分 核心语法一:形容词比较级与最高级
一、语法总述
形容词比较级和最高级是八上Unit6核心重难点,主要用于人或事物的程度对比。比较级用于两者之间的对比,意为“更……”;最高级用于三者及以上的范围对比,意为“最……”。
二、原级、比较级、最高级核心用法
1. 原级用法
结构1:as + 形容词原级 + as (和……一样……)
例句:This book is as interesting as that one.(这本书和那本一样有趣)
结构2:not as/so + 形容词原级 + as (不如……)
例句:He is not as tall as his brother.(他不如他哥哥高)
2. 比较级核心用法(两者对比)
基本结构:A + be动词 + 形容词比较级 + than + B (A比B更……)
例句:Summer is hotter than spring.(夏天比春天更热)
修饰词拓展:比较级前可加 much, a little, even, still 加强程度,不可加very/so
例句:She is much happier than before.(她比以前开心多了)
特殊句式:比较级 + and + 比较级 (越来越……)
例句:The weather is getting colder and colder.(天气变得越来越冷)
3. 最高级核心用法(三者及以上对比)
基本结构:主语 + be动词 + the + 形容词最高级 + 范围(in/of短语)
例句:Tom is the tallest boy in our class.(汤姆是我们班最高的男生)
关键规则:最高级前必须加定冠词the,范围短语是解题核心标志(in+地点/集体、of+数量)
三、变形规则(规则+不规则)
1. 规则变形(必考表格)
单词类型
变形规则
原级→比较级→最高级(例句词)
一般单音节词
直接加 -er / -est
fast→faster→fastest;tall→taller→tallest
以不发音e结尾
直接加 -r / -st
late→later→latest;nice→nicer→nicest
辅音字母+y结尾
变y为i,再加-er/-est
busy→busier→busiest;happy→happier→happiest
重读闭音节(辅+元+辅)
双写末尾辅音,再加-er/-est
hot→hotter→hottest;thin→thinner→thinnest
多音节/部分双音节词
前加more/most,单词不变形
beautiful→more beautiful→most beautiful
2. 不规则变形(必背、无规律)
原级
比较级
最高级
例句
good/well(好)
better
best
This is the best choice.(这是最好的选择)
bad/ill(坏的、病的)
worse
worst
Today’s weather is worse than yesterday.(今天天气比昨天差)
many/much(多)
more
most
She has more books than me.(她的书比我多)
little(少)
less
least
He has less time than before.(他的时间比以前少)
far(远)
farther/further
farthest/furthest
My home is farther from school.(我家离学校更远)
四、高频易错点汇总
1. 比较级带than,最高级带the+范围,二者不可混用;
2. 比较级前可加much/a little,绝对不能加very;
3. 多音节词变形只用more/most,禁止直接加er/est;
4. 不规则变形必须死记,考试零容错。
第二部分 核心语法二:名词后缀 -ness
一、语法总述
-ness 是初中核心形容词变名词后缀,专门加在形容词末尾,转化为抽象不可数名词,统一表示“某种性质、状态、程度”。
二、变形规则
1. 基础规则:直接加 -ness
绝大多数普通形容词,无需变形,直接后缀-ness,表对应状态/性质。
例词+例句:
bright(明亮的)→ brightness(亮度);The brightness of the lamp is soft.(灯光的亮度很柔和)
cold(寒冷的)→ coldness(寒冷);The coldness of winter comes early.(冬日的寒意来得很早)
sad(悲伤的)→ sadness(悲伤);She hid her sadness quietly.(她悄悄藏起了自己的悲伤)
2. 特殊规则一:y变i加 -ness
以辅音字母+y结尾的形容词,先变y为i,再加后缀-ness。
例词+例句:
happy(快乐的)→ happiness(幸福);Happiness comes from hard work.(幸福源于努力)
busy(忙碌的)→ busyness(忙碌);I’m used to the busyness of school life.(我习惯了校园生活的忙碌)
lazy(懒惰的)→ laziness(懒惰);Laziness makes people fall behind.(懒惰使人落后)
3. 特殊规则二:特殊单词直接加-ness
ill(生病的,形容词)属于特殊词,无需变形,直接加-ness。
ill → illness(疾病);Serious illness stops him from studying.(重病让他无法学习)
三、核心用法与固定搭配
1. 词性特征
所有-ness结尾名词均为不可数名词,无复数形式,可被great/deep/much等词修饰。
2. 高频固定搭配
① the + -ness名词 + of + 名词(……的状态/性质)
例句:the darkness of the night(夜色的漆黑)
② a sense of + -ness名词(……感)
例句:a sense of happiness(幸福感)、a sense of calmness(平静感)
③ 动词 + -ness名词(表现/感受到某种状态)
例句:show carefulness(表现出谨慎)、feel sadness(感到悲伤)
四、高频必备词
careful(谨慎的)→ carefulness(谨慎);weak(虚弱的)→ weakness(虚弱、弱点)
dark(黑暗的)→ darkness(黑暗);kind(善良的)→ kindness(善良)
fit(健康的)→ fitness(健康);close(亲密的)→ closeness(亲密)
五、易错点总结
1. 变形不随意:辅y结尾必须变i再加ness,禁止直接加ness;
2. 词性不混淆:形容词变名词,只表状态,无复数;
3. 语义不跑偏:-ness只表“状态、性质”,无动作含义。
第三部分 综合练习题
题型一:单项选择
1. This river is ______ than that one, so it’s safer to swim here.
A. shallow B. shallower C. shallowest D. the shallowest
2. We all admire her ______ , she is always ready to help others.
A. kind B. kindly C. kindness D. kinder
3. The new park is ______ beautiful than the old one.
A. much B. more C. very D. so
4. ______ of mind helps you study better.
A. Calm B. Calmness C. Calmer D. Calmest
5. This is ______ interesting story I have ever read.
A. more B. most C. the most D. very
6. His ______ in study makes him fail many exams.
A. lazy B. laziness C. lazier D. laziest
7. Tom runs ______ than Mike, but Jack runs ______ of all.
A. fast; fastest B. faster; the fastest C. faster; fastest D. fast; the fastest
8. The ______ of the room makes it hard to see anything clearly.
A. dark B. darker C. darkness D. darkest
9. The weather today is ______ than yesterday.
A. bader B. worse C. worst D. bad
10. A sense of ______ can make our life more wonderful.
A. happy B. happily C. happiness D. happier
题型二:词形变形填空
根据句意,用括号内单词的适当形式填空(比较级/最高级/-ness变形)
11. We should show ______ (careful) when we do homework.
12. This classroom is ______ (clean) than the next one.
13. The ______ (fit) of athletes is very important for competitions.
14. Winter is the ______ (cold) season of the four seasons.
15. Don’t let ______ (lazy) stop you from making progress.
16. Her handwriting is ______ (good) than mine.
17. The ______ (bright) of the sun makes the room warm.
18. This movie is the ______ (wonder) one I’ve ever watched.
19. His ______ (weak) in English needs to be improved.
20. City life is ______ (busy) than countryside life.
题型三:句型转换
按要求改写句子,每空一词
21. This shirt is cheap. That shirt is cheaper.(合并句子)
That shirt is ______ ______ this one.
22. He is tall in his class.(改为最高级句子)
He is ______ ______ ______ boy in his class.
23. Playing basketball is interesting. Playing football is more interesting.(合并)
Playing football is ______ ______ playing basketball.
24. The darkness of the night is scary.(用dark改写同义句)
The night is ______ and scary.
25. She is not as old as her sister.(改为比较级)
Her sister is ______ ______ her.
26. This is the best book in the store.(改为比较级)
This book is ______ than ______ other book in the store.
27. Kindness makes people warm.(用kind改写同义句)
______ people are warm to others.
题型四:短文填空
用所给词的正确形式填空,综合运用两大语法
Life is full of changes. Spring is (28) ______ (warm) than winter, and summer is the (29) ______ (hot) season in a year. We can feel the (30) ______ (bright) of sunshine on sunny days. Being positive brings us (31) ______ (happy), while (32) ______ (sad) can make us tired. We should be more careful and less lazy, and try to become (33) ______ (good) ourselves.
第四部分 参考答案
题型一:单项选择
1. B 解析:than 为比较级标志词,shallow比较级为shallower,表“更浅的”。
2. C 解析:形容词性物主代词her后接名词,kindness是kind的名词形式,表“善良”。
3. B 解析:多音节形容词比较级前加more,more beautiful 更漂亮的。
4. B 解析:句子缺主语,需要名词,calmness(平静)为calm的名词形式。
5. C 解析:I have ever read 为最高级范围标志,最高级前必须加the。
6. B 解析:形容词性物主代词his后接名词,laziness(懒惰)符合句意。
7. B 解析:第一空than用比较级faster;第二空of all用最高级the fastest。
8. C 解析:定冠词the后接名词,darkness(黑暗)作句子主语。
9. B 解析:than提示用比较级,bad的不规则比较级为worse。
10. C 解析:a sense of 后接名词,happiness为happy的名词形式,表“幸福感”。
题型二:词形变形填空
11. carefulness 解析:show后接名词作宾语,careful的名词形式为carefulness(谨慎)。
12. cleaner 解析:than提示用比较级,clean比较级直接加er。
13. fitness 解析:定冠词the后接名词,fit的名词形式fitness(健康、体能)。
14. coldest 解析:four seasons为三者以上范围,用最高级the coldest。
15. laziness 解析:let后接名词作宾语,lazy变y为i加ness。
16. better 解析:than提示比较级,good不规则变形为better。
17. brightness 解析:the+名词+of结构,bright的名词为brightness(亮度)。
18. most wonderful 解析:ever提示最高级,多音节词加most。
19. weakness 解析:形容词性物主代词his后接名词,weak的名词为weakness(弱点)。
20. busier 解析:than提示比较级,busy变y为i加er。
题型三:句型转换
21. cheaper than 解析:两者对比,用比较级+than结构。
22. the tallest 解析:in his class为范围,用最高级结构。
23. more interesting than 解析:多音节形容词比较级,完整对比句式。
24. dark 解析:同义句转换,be动词后接形容词作表语,替换名词darkness。
25. older than 解析:not as…as 可转换为比较级,她姐姐比她大。
26. better; any 解析:最高级转换为比较级+than any other 单数名词。
27. Kind 解析:形容词作定语修饰people,替换名词kindness句式。
题型四:短文填空
28. warmer 解析:than提示比较级,warm比较级直接加er。
29. hottest 解析:一年四个季节,三者以上范围用最高级。
30. brightness 解析:the+名词+of,bright变名词亮度。
31. happiness 解析:bring后接名词作宾语,happy变名词幸福感。
32. sadness 解析:while连接并列结构,与happiness对应,用sad名词形式。
33. better 解析:暗含自我对比,变得更好,用比较级。
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