内容正文:
第二讲 词形转换
词形转换是高考语法填空题的一个重点。在解答语法填空中词形转换的相关题目时,一要根据设空处在句中所作的成分确定词性:名词或代词在句中常作主语、宾语、表语或定语等,动词作谓语或非谓语,形容词作表语、定语,副词作状语修饰动词、形容词、副词或整个句子;二要根据标志及语境确定形容词或副词的比较等级;三要根据名词前的数词、量词、冠词等修饰词以及主谓一致原则来确定名词的单复数。
思维定向·先判定是否考查词形转换
解题攻略
典例印证
第一步:确定是否考查词形转换
提示词为形容词、副词、名词或代词时,首先要考虑词形转换;
提示词为动词,且该动词在句中既不作谓语,也不作非谓语,则要考虑动词词形转换。
第二步:确定转换形式
根据句式结构以及设空处所作成分进一步分析,最终确定正确的词形转换形式。
(2024·新课标Ⅱ卷)Although they could never have met, there are common ________ (theme) in their works, said Paul Edmondson, head of research for the Shakespeare Birthplace Trust.
第一步:确定是否考查词形转换
提示词theme为名词,首先要考虑词形转换;
第二步:确定转换形式
本句为“there be”句型,为倒装句,根据谓语动词“are”可判断,本句主语为名词的复数形式。
[自主解答] themes
解题规则·再依据5技法确定何种词形转换
►[技法一] 提示词为动词的词形转换
提示词为动词,如果既不是谓语动词,也不是非谓语动词,则考虑动词词形转换。动词是转换成名词还是形容词,则需根据句式结构以及设空处所作成分进一步分析。
思维
定向
典例呈现
技法点津
动词转换为名词
1.(2024·1月浙江卷)Many supermarkets are no longer doing “buy one get one free” promotions because of the ________ (criticize) that they lead to waste.
解析:criticism [根据“that they lead to waste”可知,此处应用名词作宾语。故填criticism。]
2.(2024·全国甲卷)They all agreed and vowed (承诺) to promote the idea at the ________ (complete ) of their journey.
解析:completion [句意:在他们的旅程结束时,他们都同意并发誓要宣传这个想法。根据前后文可知,此处用名词,故填completion。]
3.(2023·新课标Ⅱ卷)Since June 2017, right before the ________ (arrive) of the two new pandas, Meng Meng and Jiao Qing, I have been helping the panda keepers at the zoo to feel more comfortable and confident speaking English.
解析:arrival [空前是冠词,空后是介词,所以空处应填名词作介词before的宾语,故填arrival。]
4.(2024·无锡高三二模)The Mogao Grottoes in northwest China are the greatest Buddhist caves, and the second oldest after the Qiuci Grottoes in Xinjiang Uygur Autonomous Region still in ________ (exist) in the country today.
解析:existence [本空前面是介词in,因此这里应用名词作其宾语,故填existence。]
5.(2024·河北邯郸高三三模)Zou also mentioned the __________ (perform) of scientific experiments,like growing plants on the lunar surface, and the utilization of lunar resources, such as moon minerals and solar energy.
解析:performance [冠词修饰名词,作宾语, performance 意为“表现”时,为不可数名词。故填performance。]
6.(2024·武汉高三二模)In 2019,the Chinese government had made a ________ (commit) to lift all of its 1.4 billion people out of poverty by 2020.
解析:commitment [分析句子结构可知,设空处为名词形式,不定冠词a表明用单数,故填commitment。]
7.(2024·湖南省名校联盟高三压轴卷)“We have tried to make something that restores the villagers' pride in their local identity, as well as creating a local economic network,” says Xu Tiantian, ________ (found) of DNA.
解析:founder [此处表示“DNA”的“创立者”,应用名词,故填founder。]
(1)v.+ion/tion/ation/sion转换为名词,表示“状态或行为”
celebrate→celebration庆祝
compete→competition比赛
pollute→pollution污染
prepare→preparation准备
possess→possession拥有
(2)v.+ment转换为名词,表示“行为或结果”
develop→development发展
announce→announcement宣布
(3)v.+r/er/or转换为名词,表示“人”
settle→settler 移民
perform→performer
表演者
educate→educator 教育家
direct→director导演
visit→visitor 访问者
(4)v.+ure转换为名词
fail→failure
mix→mixture
press→pressure
(5)后缀th 结尾的名词
grow→growth
die→death
deep→depth
wide→width
warm→warmth
(6)后缀ance/ence结尾的名词
exist→existence
guide→guidance
(7)后缀al结尾的名词
arrive→arrival
approve→approval
动词转换为形容词
1.(2024·新课标Ⅰ卷)In cold weather, the structure stays ________ (close) to protect the plants.
解析:closed [空处用于stays之后作表语,应用形容词,表示“紧闭的”,故填closed。]
2.(2023·全国乙卷)The ________ (remark) development of this city, which is consciously designed to protect the past while stepping into the modern world, means there is always something new to discover here, and I could be photographing Beijing for the next 50 years.
解析:remarkable [分析句子成分可知,空处在冠词the之后名词之前,应用形容词,故填remarkable。]
3.(2024·宝鸡高三二模)Yang Zhenning,a ________ (respect) Nobel Prizewinning physicist,became the first ChineseAmerican scientist to return to China after the US just lifted the ban on visiting to China in 1971.
解析:respected/respectable [根据语境可知,设空处作定语修饰名词词组Nobel Prizewinning physicist,应用形容词作定语,故填respected/respectable。]
(1)v.+able 转换为形容词
accept→acceptable可接受的,能适应的,可调节的
afford→affordable负担得起的
(2)v.+ed/ing转换为形容词
confuse→confused感到困惑的
excite→exciting令人激动的
(3)v.+ive转换为形容词
impress→impressive给人深刻印象的
instruct→instructive有教育意义的
(4)v.+ful/less转换为形容词
doubt→doubtful怀疑的
forget→forgetful健忘的
hope→hopeless没希望的
►[技法二] 提示词为名词的词形转换
思维定向
典例呈现
技法点津
名词的单复数
1.(2024·新课标Ⅰ卷)These plants included modern Western ________ (favourite) such as rosemary, lavender and fennel.
解析:favourites [favourite是可数名词,意为“特别受喜爱的东西”,根据空后such as rosemary, lavender and fennel可知,空处应用名词的复数形式,故填favourites。]
2.(2024·全国甲卷)They are ________ (treasure) of American heritage(遗产).
解析:treasures [句意:它们是美国遗产的瑰宝。结合句意和上下文,这里指的是国家公园作为美国遗产的一部分,应使用名词的复数形式,故填treasures。]
3.(2023·全国乙卷)But for all its ancient buildings,Beijing is also a place which welcomes the fastpaced development of modern life,with 21stcentury architectural ________ (wonder) standing side by side with historical buildings of the past.
解析:wonders [分析句子成分可知,空处为名词形式;根据下文的“historical buildings of the past”可知,空处为名词的复数形式。故填wonders。]
若提示词为名词,有以下情况时要考虑用名词的复数:
(1)有数词或these、those、several、 few、many、all、both、 various、 different 等词修饰时,用名词的复数形式;
(2)名词前有one of 时,用名词的复数形式;
(3)若谓语动词是复数形式,则设空处应用名词的复数形式。
名词转换为形容词
1.(2024·新课标Ⅰ卷)The latest engineering techniques are applied to create this protective ________ (function) structure that is also beautiful.
解析:functional [空处修饰名词structure,应用形容词作定语,故填functional。]
2.(2023·新高考Ⅰ卷)Xiao long bao (soup dumplings), those amazing constructions of delicate dumpling wrappers encasing hot, ________ (taste) soup and sweet, fresh meat, are far and away my favorite Chinese street food.
解析:tasty [该处需要形容词修饰后面的名词soup,故空格需用形容词作定语,故填tasty。]
3.(2023·全国甲卷) ________ (difference) from traditional fables, Carson's story ends with an accusation instead of a moral.
解析:Different [be different from与……不同,所以用形容词作状语。故填Different。]
4.(2022·全国甲卷)Cao believes this will make the hiking trip even more ________ (meaning).
解析:meaningful [此处是make复合结构,应用形容词作宾语补足语。故填meaningful。]
提示词为名词,如果作定语修饰后面的名词时,则一般考查名词变形容词。注意名词变形容词的后缀:
(1)n.+able
honor→honorable 可敬的
(2)n.+al
nature→natural 自然的;天生的
music→musical 音乐的;悦耳的
(3)n.+ful
colour→colourful 颜色鲜艳的
meaning→meaningful有意义的
(4)n.+en
wood→wooden木质的
(5)n.+y
wealth→wealthy 富有的
名词的所有格
1.(2021·1月浙江卷)It is calculated by dividing a ________ (person) weight in kg by their height in metres squared, and a BIM of between 19 and 25 is considered healthy.
解析:person's [空前是冠词a, 空后是名词weight, 此处表示“一个人的体重”, 故用所给词的所有格形式,故填person's。 ]
2.(2021·八省联考)A ________ (student) college experience is his or her own,and the student must put his or her education first.
解析:student's [此处student与后文college experience构成所属关系,结合后文“his or her own”可知指一个学生的大学经历,应用名词所有格形式。故填student's。]
提示词与其后的名词是所属关系,应考虑名词的所有格。
(1)单数名词和不以s结尾的复数名词通常在词尾加's;
(2)以s 或es结尾的复数名词,通常在词尾加'。
[温馨提示] 名词变复数的规则和不规则变换
变化规则
典型例词
规则变化
一般在词尾加s;如果是以ch,sh,s,x等结尾的单词,则加es
trees,bikes,books,buses,watches,boxes,bushes
辅音字母+y结尾的单词,变y为i再加es;元音字母+y结尾的单词,则直接加s
babies,families,boys,plays
以o结尾的单词除了两人(negro,hero)、两菜(tomato,potato)加es外,其余一般加s
radios,photos
以f或fe结尾的单词,通常把f,fe变为v再加es
wives,knives,wolves
不规则变化
特殊变化
man→men,woman→women;tooth→teeth,
foot→feet;child→children;mouse→mice
单复数同形
Chinese,Japanese,people,sheep,deer,fish
[注意]
1.除了上表中的情况以外,还有一些特殊变化的名词。如:
German→Germans human→humans stomach→stomachs chief→chiefs belief→
beliefs
2.两个名词组成的合成词一般只变后一个名词,如apple trees,factory workers;但是和man,woman组成的合成词两个词都要变复数,如women teachers,men doctors
►[技法三] 提示词为形容词、副词的词形转换
思维定向
典例呈现
技法点津
形容
词、副
词的
词形
转换
1.(2024·新课标Ⅰ卷)...brought the plants from their native habitat in Asia to come to define much of the ________ (rich) of gardening in England.
解析:richness [空处应用名词形式richness,作介词of的宾语,故填richness。]
2.(2024·新课标Ⅱ卷)Those cultural elements have increased Stratford's international ________ (visible),said Edmondson, ...
解析:visibility [形容词international后接名词形式,故填visibility。]
3.(2023·1月浙江卷)During China's dynastic period, emperors planned the city of Beijing and arranged the residential areas according to social classes.The term “hutong”, ________ (original)meaning “water well” in Mongolian, appeared first during the Yuan Dynasty.
解析:originally [空格处修饰动词meaning,需要填副词形式,故填originally。]
(1)分析句子结构发现提示词是形容词且需要改变词性时,应考虑用派生的副词或名词;
(2)若设空处作定语、表语,则应考虑用形容词形式;
(3)若设空处修饰动词、形容词、副词或全句,则应考虑用副词形式;
(4)若设空处在介词后,则应考虑用名词作宾语。
形容
词、副
词转
换为
比较
级、最
高级
1.(2024·全国甲卷)Yellowstone was the ________ (large) United States national park-2.2 million acres-until WrangellSaint Elias in southern Alaska,which became a national monument in 1978, took the honors as a national park in 1980 with 12.3 million acres.
解析:largest [黄石国家公园是美国最大的国家公园。根据句意,这里需要表示最高级,应用形容词的最高级形式,故填largest。]
2.(2023·1月浙江卷)Their siheyuan were far smaller in scale and ________ (simple)in design and decoration, and the hutongs were narrower.
解析:simpler [根据句子结构和and可知,空格处需要填形容词比较级和前面的smaller构成并列结构作表语,故填simpler。]
3.(2022·全国甲卷)In the last five years, Cao has walked through 34 countries in six continents, and in 2016, he reached the top of Kilimanjaro, Africa's ________ (high) mountain.
解析:highest [根据空前Africa's可知,此处表示乞力马扎罗山是非洲最高的山脉,应用形容词最高级,故填highest。]
4.(2021·新高考Ⅰ卷)The amazing thing about the spring is that the colder the temperature gets,the ________ (hot) the spring!
解析:hotter [此处句型结构为“the+比较级,the+比较级”表示“越……,越……”。故此处应填hot的比较级形式。故填hotter。]
5.(2021·全国甲卷)After spending some time looking at all the defensive equipment at the wall,we decided it was time for some action and what ______ (good) than to ride on a piece of history!
解析:better [根据后文比较连(介)词than可知,此处应用形容词good的比较级。故填better。]
(1)利用标志词确定比较等级
①句子中有much、far、still、 even、rather、a little、a bit、a lot、 a great deal、than等标志性词汇时用比较级;
②空格后有表示范围的标志词 in、of、among 等时用最高级;
③空格前有 one of the等修饰词时,用最高级。
(2)利用固定句型
“the+比较级 ...,the+比较级...”表示“越……,就越……”。
(3)利用隐含信息判断
句中虽没有标志词,但暗含比较,也需要用比较级或最高级。
[温馨提示]
附表1 形容词变副词的规则
变化规则
典型例词
一般形容词变副词直接在其后加ly
quick→quickly,anxious→anxiously
以辅音字母+e结尾的形容词直接加ly,以元音字母+e结尾的形容词去掉e再加ly
immediate→immediately,polite→politely,true→truly
以辅音字母+le结尾的形容词要去掉e再加y
possible→possibly,probable→probably
以辅音字母+y结尾的形容词要变y为i再加ly
happy→happily,healthy→healthily
以ic结尾的形容词要在其后加ally
economic→economically,basic→basically
以ll结尾的形容词要在其后加y
full→fully,dull→dully
[注意] 以下单词是特殊的形式:whole-wholly public-publicly shy-shyly
附表2 形容词、副词变比较级或最高级的规则
构成法
原级
比较级
最高级
一般单音节词,末尾加er,est
tall great
taller greater
tallest greatest
以不发音的e结尾的单音节词和少数以le结尾的双音节词只加r,st
nice simple
nicer simpler
nicest simplest
以一个辅音字母结尾的闭音节单音节词,双写结尾的辅音字母,再加er,est
big hot
bigger hotter
biggest
hottest
“以辅音字母+y”结尾的双音节词,变y为i,再加er,est
easy busy
easier busier
easiest busiest
少数以er,ow结尾的双音节词,末尾加er,est
clever narrow
cleverer narrower
cleverest narrowest
其他双音节词和多音节词,在前面加more,most来构成比较级和最高级
important easily
more importan more easily
most importan most easily
►[技法四] 提示词为代词的词形转换
思维定向
典例呈现
技法点津
代词的词形转换
1.(2024·1月浙江卷)Who knows,perhaps some of the more forwardlooking ________ (one) may yet come out with a whole range of “just for you” pack sizes with special offers as well.
解析:ones [代词one意为“一个人”,在some of后应用复数形式。故填ones。]
2.(2023·新高考Ⅰ卷)Nanxiang aside, the best xiao long bao have a fine skin, to be lifted out of the steamer basket without tearing or spilling any of ________ (they) contents.
解析:their [修饰后面的名词contents需用形容词性物主代词,故填their。]
3.(2020·新高考Ⅰ卷)As well as looking at exhibits,visitors can play with computer simulations(模拟) and imagine ________ (they) living at a different time in history or walking through a rainforest.
解析:themselves [根据语境可知,主语visitors发出的动作imagine作用于自身,此处应用反身代词形式,故填themselves。]
1.分析句子结构发现提示词作主语,应考虑人称代词的主格形式;
2.分析句子结构发现提示词作宾语,应考虑人称代词的宾格形式;
3.分析句子结构发现提示词作定语,应考虑形容词性物主代词;
4.分析句子结构发现提示词作动词或介词的宾语,且和主语是同一人时,应考虑反身代词。
5.用it的情况:作形式主语或形式宾语;指代前面提到的同一个事物或情况。
6.that、those作替代词,用来代替已提到的名词,以避免重复。
►[技法五] 提示词为数词的词形转换
思维定向
典例呈现
技法点津
基数词变序数词
1.(2023·全国甲卷)Fables were part of the oral tradition of many early cultures, and the wellknown Aesop's fables date to the ________ (six) century B.C.
解析:sixth [century“世纪”前面要用序数词形式。故填sixth。]
2.(2020·全国Ⅱ卷)The plum trees are the ________ (one) to flower even as the snow is melting(融化).They represent the promise of spring and a renewal of life.
解析:first [句意:雪还在融化时,梅花是第一个开花的。这里one要变成序数词first。故填first。]
基数词变序数词的规则:
(1)一般由基数词加th构成:
six→sixth seven→seventh
ten→tenth hundred→hundredth
(2)以y结尾的基数词,先把y变为ie,再加th:
twenty→twentieth
thirty→thirtieth
(3)不规则变化:
one→first two→second
three→third five→fifth
eight→eighth nine→ninth
twelve→twelfth
年龄、年代表达法
1.(2024·杭州高三二模)There I met a gentleman by the name of Kurien in his late ________ (eighty).
解析:eighties [in one's late eighties表示“在某人快九十岁时”,故填eighties。]
2.It is known to all that there were two world wars in the ________ (twenty)century,which greatly changed the world situation.
解析:twentieth [这里表示“20世纪”,也就是“第20个世纪”,应用序数词,故填twentieth。]
3.Back in the ________ (ninety),he would remain at the zoo for almost three months to stay with the pandas during the breeding season.
解析:nineties [in the nineties意为“在九十年代”,故填nineties。]
(1)表达“在某人几十多岁”时,用“in one's+整+基数词的复数”,如:in one's fifties 在某人五十多岁时;
(2)表达“在几十年代时”,用“in the+整+基数词的复数”,如:in the thirties 在三十年代。
语境运用·全面提高关键能力
用所给词的正确形式填空
My schnauzer, Hashtag, saved my life—not once, but twice.
When he came into our home in the summer of 2017,my husband and I had been expecting his arrival for 1. ________ (month).At that time,I was also struggling with 2. ________ (depress).3. ________ (sudden) I had a bundle of energy that required my attention.The puppy needed training, walks, affection.I had 4. ________ (previous) been overwhelmed(充溢)by negative thoughts, but now I had a job to do a sense of purpose.I couldn't give up.Once I realized that I began to feel 5. ________ (good) than before.6. ________ (final) with my puppy's help, I got over my depression 18 months later.There's no question that Hashtag played a key role in my 7. ________ (recover).Then, last December, I was fast asleep on the 8. ________ (two)floor of our house when a fire started in our living room downstairs and smoke began to fill the air.Within moments, we stood outside, and I called the fire department.The alarm system only went off 10 minutes later.There's no telling what would have happened if Hashtag's 9. ________ (warn) hadn't given us a head start.I don't have the 10. ________ (word) to describe how much I care for him.
答案:1.months 2.depression 3.Suddenly 4.previously 5.better 6.Finally 7.recovery 8.second 9.warning 10.words
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