高考英语一轮复习——定语从句讲解 教案

定语从句定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词，词组或代词即先行词（Antecedent）。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出定义定语从句，就是用来修饰名词或代词的句子，起到定语的作用，所以叫做定语从句。被修饰的词叫先行词。定语从句不同于单词作定语的情况，它需要放在被修饰的词（即先行词）之后。定语从句一般由关系代词来引导。关系代词必须放在定语从句之首。从句结构:包括先行词，关系词和定语。关系词（1）        关系代词：that,which,who,whom,whose,as(在定语中作主语，宾语，定语，表语)------在句中作成分，说明后面的句子不完整。（2）        关系副词：when,where,why,(在句中作状语)-----后面的句子完整。一．            由that,who,whom作关系代词引导的定语从句，先行词指人。Do you know the comerade            spoke at the meeting yesterday?(两者都修饰前面的comerade).This is the man           (they say) is a good teacher.(这里who还做了后面they say 的宾语，有双重身份，所以不能用that.)This is the teacher            I met in the street just now.(作宾语，所以可以省略)。My cousin,            is an engineer, went to America last week.（非限定性定语从句，不能用that引导。）先行词是he, they, those, one, ones, anyone,只能用who,不能用that.Anyone          breaks the law will be punished.
One          works hard and without complain is welcome here.关系代词指人的先行词（先行词指人）存在于there be 结构中用who。Eg. There is someone             is waiting for you at school gate.先行词指人，关系代词在从句中做宾语时可以省略。Eg. This is the teacher           I met in the street just now.先行词指人，介词后紧随关系代词不能省略关系代词且必须用宾格，（关系代词在此时做宾语）。Eg. In the dark street, there wasn’t a single person to            she could turn for help.   In the dark street, there wasn’t a single person          she could turn to for help.在非限定性定语从句中，先行词指人，关系代词作宾语，只能用whom，不能用that.Eg. He is a man with rich experience,           we can learn a lot from.在who 引导的定语从句中（先行词指人），后只能用that 引导的宾语从句作主语。Eg. Who is the boy              is shouting in the classroom.先行词指人，在定语从句中作表语时，用that. Eg. Li Hong is no longer the girl            she was before.先行词又指人又指物，在定语从句中只用that.Eg. Watch the woman and her dog             are crossing the street.先行词指人，被the only, the very 等最高级或序数词修饰时，做宾语用that.Eg. He was the only person             I had invited. 为了平衡句子结构，有时要省略that 或who(或都省略)。Eg. The man             she likes is the one            is both honest and brave.二．            先行词指物，关系代词that与which的区别。一般情况可以互换Eg. The machine             can fly is plane.介词+关系代词，不能用that，且不能省略which.Eg. This is the book in           she could much interest.   This is the book           she could much interest in.非限定性定语从句中不能用that，且不能省略which. Eg. I will buy a book,           tells about the use of English idoms.先行词是that, 作宾语时用which,也可省略。Eg. What was that             you said about him.先行词是all, everything,anything, nothing,much,little,few等不定代词时，关系代词用that.Eg. Everything             can be done has been done.先行词被all,any,every,much,little,no,only,very修饰时，用that.Eg. Ask any question            you don’t understand.先行词被序数词或形容词最高级修饰时，关系代词常用that.Eg. The first lesson             I learned will never be forgotten.由which 引导的特殊疑问句中，含定语从句，先行词指物时，关系代词用that 来避免重复。Eg. Which of the cows           you keep produces more milk?先行词指物，在定语从句中作表语，只用that.Eg. Our hometown is no longer the one              it used to be. 先行词指物，且在there be句型中，只用that.Eg. There is a seat in the coner           is still free.如果指的是相同的一个东西（同一个）用that，而不用as，如表示相同，但不是同一个就要用as.Eg. I have found my missing book and this is the same one           I lost yesterday.一个句中如果含有两个定语从句，先行词指物，第一个用which，第二个用that,第一个用that，第二个就要用which。三．            关系代词which和as的区别都可以用来引导非限定性定语从句，可表示某一物的名词，也可代指整个事物。（1）which可做介词的宾语，而as不可以。（2.）which引导的非限定性定语从句一般在主语之后，as可前可后可中间，位置灵活。（3）        as 引导的非限定性定语从句有较为密切的上下关系。（4）        as本身含有“正如......”之意，一般情况下放在句首。先行词是某个具体的名词，且所指的名词在非限定性定语从句中又做了主语的时候，只用which而不用as.Eg. I like English very much,               is a bridge to so much knowledge.关系代词指代前面整个内容，并且在非限定性定语从句中作主语或宾语时，用which而不用as。Eg. Light travels faster than sound,             all teachers once told us.固定结构：as引导的非限定性定语从句用于下列句型（句式）中。Eg.  as is known to us all/ as we all know/as we can see/as is said/as is reported/as is expected/as is announced/as has happened/as we hoped可用在句首，句中，句尾；在句中作插入语（正如......）四. 关系代词whoseWhose不单用,表示所属关系,即可指人也可指物,一般情况下可和of which 互换，但有时不能。The desk          legs Tom broke yesterday has been repaired.先行词表示整体与部分的关系时（定语从句的主语），如little, some, most, mainly,few,much等时不能用whose来连接，只能用of which 或of whom来连接。Eg.  Jonn bought me much bread , little of           tastes good.     Those foreign teachers,  most            had never been to China before, are enjoying their work here.定语从句的主语是同位关系的代词（与先行词是同位关系）如all, none, neither, each, either 的时候用of whom或of which，不用whose.Eg.He gave me many books,none              was interesting.定语从句的主语是数词时，用of whom或of which ，不用whose。Eg.My father has many books,seven percent              are written in English.五．            关系代词as（可用作主语或宾语）正如：as is...to...The same +n+as...Eg. I have the same dictionary as you bought yesterday.such +n+as...像这样......像那样......六. 关系副词(后面句中完整,做宾语的从句,都考虑用关系副词,具体选择哪一个要根据意思来看).1. I will never forget these days           I lived with the farmers in the counterside. I will never forget these days           I spent with the farmers in the countryside.2. This is the farm              my father used to work.  This is the farm              my father used to visit.3.This is the reason               he was late.  This is the reason               he explained at the meeting.I will never forget the day          I joined the Party....the way             (定语从句)先行词是point,scene, case,situation,mark等时，首先考虑关系副词where，再看从句中是否有宾语，如没有就用that或which。Eg. I don’t like the way           he spokes to me.