英语先行词的概念

先行词是在定语从句中,被定语从句所修饰的名词。

1、例如:He is a teacher who teach our English.

在这里定词从句who teach our English是来修饰前面的名词teacher，所以teacher就是一个先行词。

2、例句：He is Mr. Robertson who comes from England.

他是来自英国的罗伯森先生。

其中的“Mr. Robertson”是先行词，“who”是引导词。

扩展资料：

用法：

1、先行词指人时，引导词可用Who,Whom,及that,其中当引导词在句中作主语时用Who或that；当其充当宾语时用whom或that，在非正式宾语中也可用who，也可省略。

That boy who/that broke the window is called Tom.

打破窗户的那个男孩叫汤姆。

2、先行词指物时，引导词用that或which

They planted the trees which didn’t need much water.

他们种了不需要太多水的树。

3、先行词指地点时，引导词用Where或in which

This is the house where/in which we lived last year.

这是我们去年住的房子。

4、先行词指时间时，引导词用When/on which或in which

I'll never forget the year when/ on which we worked on the farm.

我永远不会忘记我们在农场工作的那一年。

定语从句所修饰的名词或代词

先行词:是在定语从句中,被定语从句所修饰的名词.例如: He is a teacher who teach our English.在这里定词从句who teach our English是来修饰前面的名词teacher.所以teacher就是一个先行词.

先行词:是在定语从句中,被定语从句所修饰的名词.例如:HeisateacherwhoteachourEnglish.在这里定词从句whoteachourEnglish是来修饰前面的名词teacher.所以teacher就是一个先行词.再说下它的用法：1、先行词指人时，引导词可用Who,Whom,及that,其中当引导词在句中作主语时用Who或that；当其充当宾语时用whom或that，在非正式宾语中也可用who，也可省略。aThatboywho/thatbrokethewindowiscalledTom.bThepersontowhomyoujusttalkedisMrLi.b句可改为：Theperson(that/whom/who)youjusttalkedtoisMrLi.2、先行词指物时，引导词用that或whicha.Theyplantedthetreeswhichdidn’tneedmuchwater.b.Thefish(which)weboughtwerenotfresh.3、先行词指时间时，引导词用When/onwhich或inwhicha.Istillrememberthedaywhen/onwhichIfirstcametoBeijing.b.I'llneverforgettheyearwhen/onwhichweworkedonthefarm.4、先行词指地点时，引导词用Where或inwhichThisisthehousewhere/inwhichwelivedlastyear.或:Thisisthehousethat/whichwelivedinlastyear.5、whose在定语从句中作定语时，可用来指人，也可以用来指物，如:a.Thisistheboywhosemotherdiedamonthago.b.Thisisthehousewhosewindowswerebroken.此句可改成：Thisisthehousethewindouesofwhichwerebroken.6、先行词表示原因时，引导词用why,如:Thereasonwhyhewaslateforschoolwasthathehadbeenknockeddownbyabike.二、物殊情况：尽管有以上基本原则，但要学好定语从句更应注意以下特殊情况；Ⅰ、当定语从句的先行词为表示人的不定代词，如anyone,anybody,everyone,everybody,noone,nobody,all，these，those等时,用who而不用thatThosewhobreaktherulearepulished.Anybodywhohadeyescouldseetheelephantwaslikeasnake.Ⅱ.以who或which作主语的特殊疑问句中先行词指人，引导词只用That,如:a.Whoisthepersonthatisstandingatthegate?b.WhichofyouthatknowssomethingaboutEnglishdoesn’tknowthisword?Ⅲ、先行词指物时引导词用that而不用which的情况:1、先行词有序数词或形容词最高级修饰时，ThisisthebestcompositionthathasbeenwritteninEnglish.2、先行词是all,something,anything,nothing,everything,little,few,much等不定代词时Thereisnothing/little/muchthatwecandoforher.3、先行词被all,every,no,some,any,little,much等修饰时I’vereadallthebooksthatyougaveme.4、先行词被theonly/very等修饰时Thisisthevery/lastplacethattheyvisitedyesterday.5、有两个以上先行词，分别表示人或物时Theytalkedabouttheteachersandtheschoolsthattheyhadvisited.6、先行词为基数时YesterdayIcaughttwofish,Nowyoucanseethetwothatarestillaliveinabasinofwater.Ⅳ.time为先行词时，前边如有序数词修饰时，定语从句引导词用that或什么也不用，如没序数词修饰时，用when或that均可a.Thisisthelasttime(that)Ishallgiveyoualesson.先行词指人时，引导词可用Who,Whom,及that,其中当引导词在句中作主语时用Who或that；当其充当宾语时用whom或that，在非正式宾语中也可用who，也可省略。aThatboywho/thatbrokethewindowiscalledTom.bThepersontowhomyoujusttalkedisMrLi.b句可改为：Theperson(that/whom/who)youjusttalkedtoisMrLi.2、先行词指物时，引导词用that或whicha.Theyplantedthetreeswhichdidn’tneedmuchwater.b.Thefish(which)weboughtwerenotfresh.3、先行词指时间时，引导词用When/onwhich或inwhicha.Istillrememberthedaywhen/onwhichIfirstcametoBeijing.b.I'llneverforgettheyearwhen/onwhichweworkedonthefarm.4、先行词指地点时，引导词用Where或inwhichThisisthehousewhere/inwhichwelivedlastyear.或:Thisisthehousethat/whichwelivedinlastyear.5、whose在定语从句中作定语时，可用来指人，也可以用来指物，如:a.Thisistheboywhosemotherdiedamonthago.b.Thisisthehousewhosewindowswerebroken.此句可改成：Thisisthehousethewindouesofwhichwerebroken.6、先行词表示原因时，引导词用why,如:Thereasonwhyhewaslateforschoolwasthathehadbeenknockeddownbyabike.

先行词就是定语从句修饰的对象 例如“i like the book that on the desk”中的that on the desk 就是定语从句 而book 就是先行词