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1、2023年高考英语知识精讲：定语从句用法及考点分析定语从句一般位于先行词的后面，定语从句由关系代词who,whom, whose, which, that, as 和关系副词 when, where, why 等引导。关 系代词和关系副词在定语从句中担任一个成分。一、关系代词引导的定语从句1、who指人，在从句中作主语That is the man who teaches us English.那位就是教我们英语的那个人2、whom指人，在句中作宾语，常可省略The professor (whom) you wish to see has come.你想见的那位教授已经来了3、whose通常指
2、人，也可指事物，在从句中作定语This is the scientist whose name is known all over the country.这就是那位闻名全国的科学家4、which指事物，在从句中作定语或宾语，作宾语时，常可省 略。A dictionary is a book which gives the meaning of words.词典是解释词语的书5、that指事物，也可指人，在句中作主语或宾语，作宾语时， 常可省略She is the only one among us that knows French.她是我们当中唯一懂法语的人5、as引导的定语从句as也可以
3、用作关系代词，既可以单独引出定语从句，又可与主 句中的the same或such相呼应，从句中谓语动词常省略We jumped for joy at the news, as was natural.我们听到消息时高兴地跳了起来，这是很自然的事情二、关系副词引导的定语从句1、when表示时间，其先行词往往是表示时间的名词(如time, day, hour, year 等)From the time when he was little, he had known what he wanted to be when he grew up.从小时候起，他就已经知道长大后做什么2.where表示地点
4、，其下先行词往往是表示地点的名词(如place, room, house, street, area 等)Is this the room where we were living last winter.这就是我们去年冬天住过的房间吗?3、why表示原因，常用在先行词reason后面I dont know the reason why she looks unhappy today.我不知道为什么她今天看上去不愉快三、关系代词前带介词的定语从句1、关系代词which, whom在定语从句中作介词的宾语时，从句 常由“介词+which （或whom）”引出Great changes are t
5、aking place in the city in which they live.他们所居住的城市正在发生着巨大的变化This is the teacher from whom we ve learns a lot.这就是我们从他那里学到很多东西的那位老师2、定语从句也可以由“名词（或代词或数词）+介词+which（whom）” 引出The house the windows of which were damaged has now been repaired.窗子遭破坏的那幢房子现在已经修理好了U!U!种类型的定语从句只能用that引导1、当先行词是不定代词时，如all,much, s
6、omething,anything,everything, little, none等词时，定语从句引导词多为that例 1 ： Tell me everything that you know about it.把你知道 的都告诉我。2、先行词被序数词或形容词最高级或由下面词汇修饰时，应该 用 that这些词分别是：first, the only, last, any, few, same, no, some例 2： To face fear is the only method that really works. 去面对恐惧是唯一真正行之有效的方法。先行词method由the only
7、修饰，所以应该用that；例 3： The present moment is the best gift that you can give yourselfo当前的时光是你能给自己的最好礼物。先行词gift由最 高级best修饰，此时应该用that；3、当关系代词在限定性从句中用作表语的时候，需要用that例 4： He is not the simple-minded man that he was five years ago.他不再是五年前那个头脑简单的人了。4、当并列的两个先行词分别指人或物的时候，需要用that例 5： He was watching the children a
8、nd parcels that filled the car.他看着车上的孩子和包裹。以上四种是我们经常遇到的只能用that引导的定语从句种类, 当然，关系代词that有的时候可以省略，有的时候必须保留。首先， 如果 that 的先行词是 all, nobody, no one, someone, somebody 等 不定代词时，that往往可以省略；其次，当先行词是最高级形式时， that也可以省略；最后，关系代词that在定语从句中作宾语时，that 也可以省略。但是，that在定语从句中作主语的时候，则不可以省 略。五、as与which引导非限制性定语从句的区别这类定语从句只能由whi
9、ch或as引导。两者之间的区别在于:K which引导的定语从句只能位于主句后，但as引导的从句可 位于主句前、中、后。如：David, as you know, is a photo geographer. 戴维是个摄影 师，你是知道的。（不可用which）Li Ming is late, as is often the case.李明迟到了，这事 是经常发生的。（不可用which）2、as在定语从句中作主语时，从句谓语通常要有be或别的系 动词，但which不受此限制。如：Li Ming was late, which （二and this） made Mr. Zhang very ang
10、ry.李明迟到了，这件事使张先生非常生气。（不可用as）3、as引导的定语从句只表示一个众所周知或意料之中的事，但 which不受此限制。如:He married her, which was unexpected. 他和她结婚了，这是 出乎意料的。（不可用as）4、 as有“正如”之意，而which则意为“这（件事，一点）”, 可用 and this/that/it 来代替。5、as多用于固定搭配中：as is often the case（这是常有的 事），as was expected （不出所料），as often happens （正如经常发 生的那样），as is known to
11、 all （众所周知），as has been said before （如上所述）,as is mentioned above （正如上面所提到的）等。注：which代表整个句子，还可用于in which case, at which point, on which occasion 等。如：I may have to work late, in which case Ill telephone you. 我可能得晚点下班，那样我会给你打电话的。六、of whom / which引导的定语从句在非限制性定语从句中，先行词作为一个整体，表示整体中的一 部分，即表示“部分与整体”的关系时，用of
12、 which / whom或者 of which / whom都可以。但与表示所属关系不同，这里不能用whose 来代替of whicho1、表示整体中的部分The buses, most of which were already full, were surrounded by an angry crowd.公共汽车大多数都已经挤满了人，它们被愤怒 的人群包围着。I picked up the apples, some of which were badly bruised. 我拣起那些苹果，其中有一些伤得很厉害。I bought a dozen eggs, six of which br
13、oke when I dropped the box.我买了一打鸡蛋，六个在我失手掉了盒子时摔碎了。There are two bottles left, one of which is almost finished and the other of which is not quite.只剩两瓶，一瓶快喝完了， 另一瓶没完全喝完。The treasure some of which has been recovered, has been sent to the British Museum.这些宝藏已送往大英博物馆，其中有一些 是失而复得的。2、表示所属关系Hes written a book, the name of which Ive forgotten. 他 写了一本书，书名我忘了。句中的the name of which=whose nameoIt was an agreement the details of which could not be altered.这是一项其细节不可更改的协定。句中的 the details of which=whose detailso