定语从句典型错误例析
定语从句常见错误种种
定语从句常见错误种种定语从句是一种重要的语法句式，也是学习难点和高考热点。
许多学生在处理定语从句时，经常出现如下错误：1.定语从句中谓语动词的单、复数错误①错：The man who live downstairs will help me．对：The msn who lives downstairs will help me．②错：Anyone who break the law will be punished.对：Anyone who breaks the law will be punished．③错：Tom is one of those girls Who likes pop music．对：Tom is one of those girls who like pop music．④错：She is the only one of the girls who were late for the meeting．对：She is the only one of the girls who was later for the meeting．析：定语从句中动词的单复数形式常依先行词的形式而定。
如例①，例②中先行词man，anyone是单数，从句中的动词也相应用单数。
在“one of+复数名词+定语从句”结构中，定语从句中的动词常用复数形式，如例③。
但有时为了强调one，在one前有the或the only等限定词时，定语从句中的动词依one而定，用单数，如例④。
2.定语从句中作主语的关系代词被错误地省去①错：A dictionary is a book gives the meaning of word. 对：A dictionary is a book wich gives the meaning of words. ②错：Those wish to go to the park must be at the gate by 7：50. 对：Those who wish to go to the park must be at the gateby 7：50．析：在定语从句中作主语的关系代词是不可省略的。
定语从句中常见错误例析
定语从句中常见错误例析在使用定语从句过程中,有些学生往往会出现这样或那样的错误.为避免这些错误,现对一些常见错误作以归纳：1 从句中多余宾语[误] The finger I dipped into the cup was not the one I put it into my mouth.[正] The finger I dipped into the cup was not the one I put into my mouth.上例中,关系代词that或which在定语从句中作宾语,可省去,因此,从句中宾语it多余.2 从句中缺少主语[误] He is the professor gave us a speech yesterday.[正] He is the professor who gave us a speech yesterday.关系代词who 或that在定语从句中做主语不能省略,否则,句子结构不完整.3 从句中主谓不一致[误]I, who is your friend, will try my best to help you.[正]I, who am your friend, will try my best to help you.定语从句中,关系代词做主语时,应注意主谓一致,也就是说,根据先行词的人称和数来确定从句中谓语动词的形式.如：-I just spoke to the doctor who is an eye specialist.He was the only one of youngest girls who plays in the band.4搭配错误[误]Don’t talk about such thin gs that you do not understand.[正]Don’t talk about such things as you do not understand.在such…as结构中,as所引导的中定语从句时,不能用其它关系代词代替,但在the same…as结构中,如属同类则用as,如: 如Y ou’ve made the same mistake as I did ,not changed ,not another or others作之意时,则需用that，如Y ou’ve made t he same mistake that you made last time。
例析定语从句的易错点
例析定语从句的易错点析：在“oneof复数名词+定语从句”结构中，定语从句的先行词是复数名词，故谓语动词要用复数形式；在“theoneof 复数名词+定语从句”结构中，先行词是one，故谓语动词要用单数形式。
四、误省略了定语从句中做主语的关系代词关系词在定语从句中充当宾语，一般可以省略，做主语等其他成分一般不省略。
误：Childreneatalotofsugaroftenhavehadteeth.正：Childrenwho/thateatalotofsugaroftenhaveh adteeth.析：应加上关系代词who或that,因为从句缺少主语，且主语不能省略。
五、认不清分隔现象定语从句一般紧跟在先行词的后面，但有些时候是因为特殊需要，把先行词与定语从句分离，增加难度，以此来考查学生对基础知识和语法结构的辨析能力。
常见的分隔情况如下：误：MissYangwastheonlygirlintheofficewhichh adbeeninvitedtotheparty.析：应把关系代词which改成who,因为先行词girl和定语从句被状语intheoffice隔开了。
六、与强调句型及其他句型的混合在实际运用中，要分清到底是定语从句，还是并列句、状语从句、强调句或其它句型，然后再来确定关联词。
例如MrWuhastwosons,andbothofthemarefondo fplayinggolf.MrWuhastwosons,bothofwhomarefondofplayinggolf.析：例1中and连接的是并列句，不能用whom代替them。
例2去掉and，就必须用whom代替them构成定语从句。
Itwaslastnightthattheterriblefirebrokeout.析：这里是“Itwas+被强调部分+that...”构成的强调句型，故连接词不用when。
You’dbettermakeamarkatwhereyouhaveanyques tions.析：此句应去掉at,因为该句为where 引导的地点状语从句。
常见病句类型定语从句结构错误的问题及修改方法
常见病句类型定语从句结构错误的问题及修改方法常见病句类型：定语从句结构错误的问题及修改方法定语从句是英语语法中常见的句子结构，用于修饰名词或代词。
然而，很多学习者在使用定语从句时常常出现结构错误的问题。
本文将探讨常见的定语从句结构错误类型，并提供相应的修改方法，以帮助学习者有效地避免这些问题。
一、缺少关系代词或关系副词在定语从句中，关系代词"that, who, whom, which"和关系副词"where, when, why"起着连接前后两个句子的作用。
然而，很多学习者在书写过程中会忘记添加这些关系词，导致句子结构错误。
错误示例1：“I met a girl is from China.”错误示例2：“The book I bought was very interesting.”修改方法：加上适当的关系代词或关系副词。
正确示例1：“I met a girl who is from China.”正确示例2：“The book that I bought was very interesting.”二、使用错误的关系代词或关系副词关系代词和关系副词在引导定语从句时需要根据引导词在从句中所起的作用来选择适当的形式。
然而，一些学习者常常混淆关系词的用法，导致句子结构错误。
错误示例1：“The person which helped me was very kind.”错误示例2：“I visited the city where the Great Wall was built it.”修改方法：根据引导词在从句中所起的作用来选择适当的关系代词或关系副词。
正确示例1：“The person who helped me was very kind.”正确示例2：“I visited the city where the Great Wall was built.”三、缺乏主谓一致性定语从句的谓语动词应该和先行词所指代的名词或代词在人称和数方面保持一致。
定语从句常见错误分析(精选)
定语从句常见错误分析英语定语从句是学生学习英语较难掌握的一个语法。
为了帮助学生正确使用定语从句，本文就学生的常见错误进行了归纳和分析。
I.句子结构错误。
1.昨天王老师上了一节非常生动而有趣的课。
误：Yesterday Mr Wang taught the lesson was very lively andinteresting.正：The lesson Mr Wang taught yesterday was very lively andinteresting.分析：错句完全是按照汉语的顺序翻译。
分析一下句子，“课”在句子中作主语，而“昨天王老师教的”是用作“课”的定语，所以应该用定语从句来表达。
2.你上个月从图书馆借的那本书还了吗？误：Have you returned me the book you borrowed it from thelibrary last month?正：Have you returned the book you borrowed from the libraylast month?分析：错句的定语从句中多了宾语it，关系代词which或that在从句中作宾语可以省略，所以不能再用it作borrowed的宾语。
3.我永远也不会忘记我在那儿生活了八年的村庄。
误：I'll never forget the village where I once worked therefor eight years.正：I'll never forget the village where I once worked foreight years.分析：关系副词既引导定语从句，又在从句中作地点状语，因此不能再用表示地点状语的副词there。
II.介词错误1.你们住的那个房间太小了。
误：The room which you are living is too small.正：The room in which you are living is too small.或 The room which you are livng in is too small.分析：关系代词在定语从句中作接物动词的宾语或介词宾语。
例析定语从句十大易错点
例析定语从句十大易错点例析定语从句十大易错点定语从句是中学英语教学中的一个重要语法项目，也是历届高考的热点所在。
笔者现将定语从句易出错的地方归纳为以下几点，希望对大家有所帮助。
易错点一：关系代词和关系副词的混用例1. I’ll never forget the days when I spent in New York with you.例2. I’ll never forget the days which I visited New York with you.析：例 1 中的 when 应改为 which 或 that ；例 2 中的 which 应改为when .区分关系代词和关系副词的关键是看它们在定语从句中所充当的成分。
如果定语从句中缺少主语、宾语，就应考虑使用关系代词，如例1 ；若定语从句中缺少状语，就应考虑使用关系副词，如例2 .易错点二：固定句式出差错例 3. Mary is so lovely a girl as everybody loves her.例 4. Mary is so lovely a girl that everybody loves.析：例 3 中的 as 应改为 that ；例 4 中的 that 应改为as . so…as 或so…that 为固定句式，前者为 as 引导的定语从句， as 在定语从句中作宾语或主语，如例 4 ；后者为 that 引导的结果状语从句，该从句的成分是完整的，不缺少主语或宾语，如例3 .类似的固定句式还有the same… as （that），such…as ，as…as 等。
易错点三：主谓不一致例 5. Tom is one of the students who likes swimming.例 6. Tom is the only one of the students who like swimming.析：例 5 中的 likes 应改为 like ；例 6 中的 like 应改为 likes .在“ one of + 复数名词 + 定语从句”结构中，定语从句的先行词是复数名词，故谓语动词要用复数形式，如例 5 ；在“ the（only） oneof + 复数名词 + 定语从句”结构中，先行词是 one ，而不是复数名词，故谓语动词要用单数形式，如例 6 .易错点四：与强调句型及其他句型的混合例 7. Was it in the shop that you bought the recorder that you lost your pen？例8. You’d better make a mark at where you have any questions.析：例 7 中第一个 that 应改为 where ；例 8 中应去掉 at .例 7 为带有定语从句的强调句， you bought the recorder 为定语从句，其引导词应用 where ，后面第二个 that 才是强调句中的 that ，此句可还原为： You lost your pen in the shop where you bought the recorder .例 8 为 where 引导的地点状语从句。
定语从句典型错误例析
定语从句典型错误例析1.【误】The finger I dipped into the cup was not the one I put it into my mouth.【正】The finger I dipped into the cup was not the one I put into my mouth.【析】上句应由关系代词that或which在定语从句中作宾语，已省去。
因此，从句中的宾语it多余。
又如：【误】Chaplin lived the last years of his life in Switzerland,where he was buried there in 1977 【正】Chaplin lived the last years of his life in Switzerland,where he was buried in 1977.2.【误】I,who is a Chinese,will do my best for our country.【正】I,who am a Chinese,will do my best for our country.【析】定语从句中谓语动词的形式应依据先行词的人称和数来确定，保持主谓一致。
如：①Mike is one of the students who know the truth.(先行词为students)②Mike is the only one of the students who knows the truth.(先行词为the only one)3.【误】All what you have done is not necessary.【误】All which you have done is not necessary.【正】All that you have done is not necessary.【析】what不能引导定语从句。
定语从句典型错误超强纠错
定语从句典型错误超强纠错1. 误：He is the man who computer was stolen last month.正：He is the man whose computer was stolen last month.2. 误：I live in a room which window faces south.正：I live in a room whose window faces south.析：当关系代词在定语从句中作定语时，不管先行词是人还是物，关系代词一般用whose。
3. 误：Is this the book (which) your father bought it for you?正：Is this the book (which) your father bought for you?析：关系代词不仅起连接主句与定语从句的作用，而且还充当从句的某一句子成分。
因此，it在此多余。
4. 误：The fisherman whom I think is poor is in fact very rich.正：The fisherman who I think is poor is in fact very rich.析：关系代词在从句中作主语，因此要用who。
5. 误：Bob is one of my friends who knows Chinese.正：Bob is one of my friends who know Chinese.6. 误：Bob is the only one of my friends who know Chinese.正：Bob is the only one of my friends who knows Chinese.析：在例句5中，先行词是friends，所以从句中的谓语动词要用复数形式；在例句6中，先行词是（thd only）one，所以从句中的谓语动词要用单数形式。
定语从句常见错误分析(精选)
定语从句常见错误分析英语定语从句是学生学习英语较难掌握的一个语法。
为了帮助学生正确使用定语从句，本文就学生的常见错误进行了归纳和分析。
I.句子结构错误。
1.昨天王老师上了一节非常生动而有趣的课。
误：Yesterday Mr Wang taught the lesson was very lively andinteresting.正：The lesson Mr Wang taught yesterday was very lively andinteresting.分析：错句完全是按照汉语的顺序翻译。
分析一下句子，“课”在句子中作主语，而“昨天王老师教的”是用作“课”的定语，所以应该用定语从句来表达。
2.你上个月从图书馆借的那本书还了吗？误：Have you returned me the book you borrowed it from thelibrary last month?正：Have you returned the book you borrowed from the libraylast month?分析：错句的定语从句中多了宾语it，关系代词which或that在从句中作宾语可以省略，所以不能再用it作borrowed的宾语。
3.我永远也不会忘记我在那儿生活了八年的村庄。
误：I'll never forget the village where I once worked therefor eight years.正：I'll never forget the village where I once worked foreight years.分析：关系副词既引导定语从句，又在从句中作地点状语，因此不能再用表示地点状语的副词there。
II.介词错误1.你们住的那个房间太小了。
误：The room which you are living is too small.正：The room in which you are living is too small.或 The room which you are livng in is too small.分析：关系代词在定语从句中作接物动词的宾语或介词宾语。
定语从句常见错误总结
定语从句常见错误总结定语从句常见错误总结一、在定语从句中加了多余的定语。
如：1.误：Some of the boys I invited them didn’t come.正：Some of the boys I invited didn’t come.译：我邀请的男孩中有几个没有来。
析：应删去them，因为从句的宾语是省略了的whom，who或that。
?2.误：The book that you need it is in the library.正：The book that you need is in the library.译：你需要的书在图书馆里。
析：应删去it，因为从句的'宾语是关系代词that。
二、把定语从句谓语动词的单、复数弄错。
如：1.误：Anyone who break the law will be punished.正：Anyone who breaks the law will be punished.译：任何违犯法律的人将被处罚。
析：应改break为breaks，因为who指anyone，是单数。
?2.误：Those who has finished may go home.正：Those who have finished may go home.译：做完了的人现在可以回家。
析：应改has为have，因为who指those，是复数。
?3.误：He is the only one of the teachers who know French in our school.正：He is the only one of the teachers who knows French in our school.译：他是我们学校中唯一懂法语的人。
析：应改know为knows，因为one前有the only之类限定词，定语从句在意义上修饰的是the only one，是单数，而不是复数名词the teachers。
定语从句典型错误解析
定语从句典型错误解析————————————————————————————————作者：————————————————————————————————日期：定语从句典型错误解析1．我给他看了我上周在杭州的照片。
【误】Ｉshowed hiｍthe phｏtos I toｏｋtheｍｉn Ｈaｎｇｚhou last week.【正】I showed ｈim the photｏｓＩｔoｏk in Han ｇzｈou lａｓt week.【析】关系代词或关系副词既代替先行词，又在定语从句中充当一定的成分。
例句为省略了关系代词(ｔｈat/wｈｉｃh)的定语从句,thaｔ／ｗｈｉcｈ指代ｔｈephoｔos，在定语从句中充当tｏoｋ的宾语,故tｈｅm多余,应去掉。
２. 那个正在修理汽车的人是我的叔叔。
【误】Thｅｍan is mending the ｃaｒｉsｍy ｕnclｅ.【正】The man who/thatｉs ｍｅｎdinｇthe carｉｓmｙuncｌｅ.【析】关系代词在定语从句中充当主语时不可省略，只有作宾语时才能省略tｈat。
本句还可以译为Tｈｅman mending thｅcａｒis my uncle.(-ｉｎｇ形式短语mending the cａr作ｔhe ｍan的后置定语。
) 3．这只风筝是你父亲昨天为你扎的吗?【误】Is thiｓｋｉｔe yoｕｒfａtｈer maｄｅfor yoｕｙestｅrday？【正】Ｉs tｈｉs kite thｅｏne(tｈat) your faｔher made ｆｏr youｙesteｒdaｙ？【析】若把thｉs看作kｉte的修饰语,短语tｈis ｋiｔｅ为主句的主语,这时我们可以看出主句中缺少表语，即定语从句的先行词，所以应该加上代词the one。
如果我们把this看作代词,作句子的主语，那么kｉte应该为句子的表语，则可以看出先行词kiｔｅ前缺少定冠词the。
易混易错定语从句10例
易混易错定语从句10例关于定语从句，对于一些英语研究者来说，可能会有很多混淆和错误。
下面让我们来看看一些关于定语从句混淆和错误的例子。
第一，定语从句不能用简单的连词“and”连接，而应使用“that”或“which”：错：The professor and teaches us English is from England.正：The professor that teaches us English is from England.第二，定语从句应使用定冠词“the”：错：This is a book, has a lot of pictures.正：This is the book that has a lot of pictures.第三，定语从句应使用主语从句：错：The girl, she is very friendly.正：The girl who is very friendly.第四，定语从句不能使用“who”：错：The people who live in this city are friendly.正：The people that live in this city are friendly.第五，定语从句应使用形容词从句：错：The house, it is very big.正：The house which is very big.第六，定语从句不能使用“that”：错：This is the man that works in the bank.正：This is the man who works in the bank.第七，定语从句不能使用“which”：错：This is the girl which is my friend.正：This is the girl who is my friend.第八，定语从句应使用宾语从句：错：She told me that I should study harder.正：She told me that I should study harder.第九，定语从句不能使用“where”：错：This is the place where I live.正：This is the place that I live.第十，定语从句应使用时间从句：错：This is the day, it is my birthday.正：This is the day when it is my birthday.以上是一些关于定语从句混淆和错误的例子。
定语从句典型错误分析
定语从句典型错误分析定语从句典型错误分析1. She used to help my brother, who was very kind of her.改：将who改为which。
析：犯这类错误的主要原因是把my brother错当成了先行词。
关系代词which指代的先行词是整个主句，它引导非限定性定语从句。
2. Do you still remember the day when we spent together in China last year?改：将when改为that/which或将 when删除。
析：犯这类错误的主要原因是没有弄清关系代词与关系副词的用法区别。
不能因为先行词表示时间就一定用关系副词when, 而要学会准确把握句子的结构，正确分析句子的成分。
例句中定语从句要用关系代词引导，并在定语从句中作spent的宾语。
3. The way which you look at problems is wrong.改：在which前加in或者将which改为that，也可将which删除。
析：当先行词是the way时，定语从句常用that/in which引导，that/in which也可省略。
4. We were interested in the things and people whom we saw during the trip.改：将whom改为that。
析：当先行词既有人又有物时，定语从句用关系代词that引导，that作宾语时可省略。
5. It was in the kitchen where the fire broke out.改：将where改为that。
析：犯这类错误的主要原因是把强调句型与定语从句混为一谈了。
例句为强调句型，强调的是地点状语in the kitchen。
6. Is this factory that you have been working in since your graduation?改：在that前加the one。
定语从句典型错误例析.
定语从句典型错误例析袁征1.我给他看了我上周在杭州的照片[ 误] I showed him the photos I took them in Hangzhou last week.[ 正] I showed him the photos I took in Hangzhou last week.[ 析]关系代词或关系副词既代替先行词，又在定语从句中充当一定的成分。
例句为省略了关系代词〔that/which 〕的定语从句， that/which在定语从句中充当 took 的宾语，故 them 多余，应去掉。
2.那个正在修理汽车的人是我的叔叔。
指代 the photos ，[ 误] The man is mending the car is my uncle.[ 正] The man who/that is mending the car is my uncle.[ 析]关系代词在定语从句中充当主语时不可省略，只有作宾语时才能省略that 。
本句还可以译为The man mending the car is my uncle.〔-ing 形式短语 mending the car 作 the man 的后置定语。
〕3. 这只风筝是你父亲昨天为你扎的吗？[ 误 Is this] kite your father made for you yesterday?[ 正] Is this kite the one (that) your father made for you yesterday?[ 析]假设把this看作kite的修饰语，短语this kite为主句的主语，这时我们可以看出主句中缺少表语，即定语从句的先行词，所以应该加上代词 the one 。
如果我们把 this 看作代词，作句子的主语，那么 kite 应该为句子的表语，那么可以看出先行词 kite 前缺少定冠词 the 。
故本句还可改为： Is this the kite (that/which) yourfather made for you yesterday?4.她告诉我的就这些。
定语从句常见错误例析
定语从句常见错误例析
一.误用关系词
1.i'llneverforgetthedayswhenwespenttogetheronthefarm.
2.thisisthefactorywherehewasinvitedtovisitlastmonth.
分析：定语从句的先行词是表示时间或地点的名词或代词时，引导定语从句的关系词不一定都是when或where。
关系词的选择主要取决于定语从句中的谓语动词。
如果从句的谓语动词是及物动词而且其后没有宾语，就用关系代词that或which作宾语。
如果从句的谓语动词是不及物动词或者是后面已经有了宾语的及物动词，就用关系副词。
在句1和句2中，从句谓语动词spent和visit都是及物动词，而且后面又没有宾语，所以应分别将when和where改为that或which。
二.宾语重复
1.asweallknowit,theearthisround.
2.themanagerdiscussedtheplanthattheywouldliketoseeitcarri edoutthenextmonth.
分析：如果关系代词在从句中作宾语，则谓语动词后面就不能再有宾语。
在句1中，关系代词as作从句谓语动词know的宾语，因此，it就是多余的，应去掉。
在句2中，关系代词that在从句中作动词see 的宾语，因此it也是多余的，应去掉。
三.缺少先行词或关系词
1.isthisparkwherehisfatherworks?。
完整版定语从句中的十种常见错误
定语从句中的十种常见错误一、省去作主语的关系代词致错误：The changes have happened in the past few years make the city look even morebeautiful.正: The changes that have happened in the past few years make the city look evenmore beautiful.误：Those want to visit the art exhibition sign your names ，please.正: Those who want to visit the art exhibition sign your names ，please.分析：关系代词在定语从句中作宾语时可以省，但作主语时不能省。
二、从句中使用多余的代词或副词致错误：The compositions we handed them in two weeks ago haven 't been marked yet. 正: The compositions we handed in two weeks ago haven 't been marked yet.分析：从句中省去了作宾语的关系代词that 或which，应去掉them。
误：After living in Paris for 60 years ，he returned to the small town where he grew upas a child there.正: After living in Paris for 60 years ，he returned to the small town where he grew upas a child.分析：关系副词where在从句中作地点状语，使用there属语义重复，应去掉。
定语从句十大典型错误例析
定语从句十大典型错误例析[错例展示]1. I am sorry I have lost the book you lent it to me last week.2. Mary is the only one of us who have been to the Great Wall.3. Is this museum that you paid a visit to a few days ago?4. Please show me the book which cover is red.5. Don’t worry. I will do all what I can to help you out.6. It is known to us all, China has the largest population in the world.7. I will never forget the day when we spent together in No. 1 Middle School.8. My glasses, without them I was like a blind man, fell to the ground and broke.9. The weather turned out to be very good, that was more than we had expected.10. It was in this factory where my father had worked for more than 20 years.[指点迷津]1. 去掉it。
定语从句you lent to me last week前省略了关系代词that / which, that / which在定语从句中充当宾语，it与关系代词重复，应去掉。
2. have → has。
关系代词作主语时，定语从句中的谓语动词要与先行词在人称和数上保持一致。
常见病句类型定语从句错误的句子
常见病句类型定语从句错误的句子定语从句是英语语法中常见的一种从句类型，它用来修饰名词或代词。
然而，由于定语从句结构稍复杂，常常容易出现错误。
本文将讨论常见的定语从句错误类型，并给出相应的纠正方法。
一、定语从句位置错误1. 错误：The book I borrowed it from the library.正确：The book I borrowed from the library.在定语从句中，关系代词“that/which/who”在句中作为主语时，不需要再使用人称代词“it”。
2. 错误：I have a friend is a doctor.正确：I have a friend who is a doctor.定语从句必须用关系代词引导，来连接主句和从句，同时在从句中充当句子成分。
二、关系词选择错误1. 错误：The car which I bought it is red.正确：The car which I bought is red.关系代词“which”在定语从句中作为主语，不需要再使用人称代词“it”。
2. 错误：The girl who she is my sister is studying abroad.正确：The girl who is my sister is studying abroad.关系代词“who”在定语从句中作为主语时，不需要再使用人称代词“she”。
三、定语从句引导词省略错误1. 错误：I have a dog barks loudly.正确：I have a dog that barks loudly.省略了关系代词“that”导致定语从句缺少引导词，需要补充。
2. 错误：This is the house I grew up.正确：This is the house (that/which) I grew up in.省略了关系代词“that/which”导致定语从句缺少引导词，需要补充。
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定语从句典型错误例析1. 我给他看了我上周在杭州的照片。
【误】I showed him the photos I took them in Hangzhou last week.【正】I showed him the photos I took in Hangzhou last week.【析】关系代词或关系副词既代替先行词，又在定语从句中充当一定的成分。
例句为省略了关系代词（that/which）的定语从句，that/which指代thephotos，在定语从句中充当took的宾语，故them多余，应去掉。
2. 那个正在修理汽车的人是我的叔叔。
【误】The man is mending the car is my uncle.【正】The man who/that is mending the car is my uncle.【析】关系代词在定语从句中充当主语时不可省略，只有作宾语时才能省略that。
本句还可以译为The man mending the car is my uncle.（-ing形式短语mending the car作the man的后置定语。
）3. 这只风筝是你父亲昨天为你扎的吗？【误】Is this kite your father made for you yesterday?【正】Is this kite the one (that) your father made for you yesterday?【析】若把this看作kite的修饰语，短语this kite为主句的主语，这时我们可以看出主句中缺少表语，即定语从句的先行词，所以应该加上代词the one。
如果我们把this看作代词，作句子的主语，那么kite应该为句子的表语，则可以看出先行词kite前缺少定冠词the。
故本句还可改为：Is this the kite(that/which) your father made for you yesterday?4. 她告诉我的就这些。
【误】This is all which she told me.【正】This is all (that) she told me.【析】当先行词为all, none, one, any, few, little, everything, anything, nothing等或先行词前有序数词，形容词最高级修饰时，关系代词只能用that。
另外，本句还可以译为This is what she told me.不过此时what引导的是表语从句，而不是定语从句。
5. 这是我们明天要讨论的问题。
【误】This is the problem about that we’ll talk tomorrow.【正】This is the problem about which we’ll talk tomorrow.【正】This is the prob lem (that/which) we’ll talk about tomorrow.【析】“介词+关系代词”引导的定语从句，先行词指人时，关系代词用whom；指物时，关系代词用which。
另外，有些固定短语如look after, listen to等，一般也不能将介词提到关系代词之前。
6. 他是今天早晨迟到的学生之一。
【误】He was one of the students who was late this morning.【正】He was one of the students who were late this morning.【析】在“one of+复数名词”结构中，定语从句的先行词是复数名词，故谓语动词应用复数；在“the only one of+复数名词”的结构中，定语从句的先行词是one，故谓语动词应用单数。
如：She is the only one of the students in our class who has ever been to Beijing.她是我们班唯一去过北京的学生。
7. 我还记得我在北京度过的日子。
【误】I still remember the days when I spent in Beijing.【正】I still remember the days (which/that) I spent in Beijing.【析】定语从句中引导词的选择关键词是看先行词在定语从句中充当什么样的成分，或者说定语从句中缺少什么成分。
如果从句缺少主语，表语，宾语，则引导词通常为which, that, who, whom, as；如果缺少定语则用关系代词whose；如果缺少状语，则用关系副词when, where, why.分析例句的成分可以知道，从句中缺少谓语动词spent的宾语，故应用关系代词which或that来引导定语从句。
若把例句变为：I still remember the days ______ I enjoyed myself in Beijing。
则定语从句中缺少时间状语，故此时应用关系副词when。
8. 昨晚送你回家的那个人是谁？【误】 Who is the man who sent you home last night?【正】 Who is the man that sent you home last night?【析】当主句为含有who/which的疑问句，关系代词用that，而不用who或which。
如：Which is the book that you bought yesterday?哪本书是你昨天买的？9. 他们谈了许多他们所知道的人和事。
【误】 They talked about a lot of things and persons what/who/which they knew.【正】 They talked about a lot of things and persons that they knew.【析】先行词既有人又有物时应该用that来引导。
What不可以引导定语从句。
10. 我的家乡已不再是十年前的样子。
【误】My hometown is no longer the town which it used to be ten years ago.【正】My hometown is no longer the town (that) it used to be ten years ago.【析】当先行词在定语从句中充当表语时关系代词一般只能用that。
另外，先行词是there be中的主语时，关系代词也常用that，口语中这两中情况的关系代词that也可以省略。
如：There is a park (that) we often visit on Sundays.由于定语从句的结构和用法比较复杂，初学者在使用时往往容易犯一些错误，最常见的有如下五种：一、在定语从句中加了多余的定语。
1．误：Some of the boys I invited them didn’t come．正：Some of the boys I invited didn’t come．译：我邀请的男孩中有几个没有来。
析：应删去them，因为从句的宾语是省略了的whom，who或that。
2．误：The book that you need it is in the library．正：The book that you need is in the library．译：你需要的书在图书馆里。
析：应删去it，因为从句的宾语是关系代词that。
二、把定语从句谓语动词的单、复数弄错。
1．误：Anyone who break the law will be punished．正：Anyone who breaks the law will be punished．译：任何违犯法律的人将被处罚。
析：应改break为breaks，因为who指anyone，是单数。
2．误：Those who has finished may go home．正：Those who have finished may go home．译：做完了的人现在可以回家。
析：应改has为have，因为who指those，是复数。
3．误：He is the only one of the teachers who know French in our school．正：He is the only one of the teachers who knows French in our school．译：他是我们学校中唯一懂法语的人。
析：应改know为knows，因为one前有the only之类限定词，定语从句在意义上修饰的是the only one，是单数，而不是复数名词the teachers。
4．误：This is one of the rooms that is free now．正：This is one of the rooms that are free now．译：这是目前空着的房间之一。
析：应改is为are，因为one前没有the only之类的限定词，定语从句在意义上修饰的是名词复数the rooms，而不是单数one。
三、误省略了定语从句中作主语的关系代词。
1．误：Children eat a lot of sugar often have bad teeth．正：Children who／？that eat a lot of sugar often have bad teeth．译：吃糖多的孩子往往牙齿不好。
析：应加上关系代词who或that，因为从句少主语，且主语不能省略。
2．误：The key opens the bike is missing．正：The key that／which opens the bike is missing．译：开这辆自行车的钥匙不见了。
析：应加上关系代词that或which，因为从句少主语，且主语不能省略。
四、定语从句中加了多余的关系副词或介词。
1．误：The house where he lives in needs repairing．正：The house where he lives needs repairing．或：The house he lives in needs repairing．译：他住的房子需要修理。
析：应保留where，删去从句中的in，因为关系副词where在从句中作地点状语，in属多余。
或删去关系副词where，因为where在这里的意思是in which，否则介词in就重复了。