引導(dǎo)定語(yǔ)從句的關(guān)系副詞有三個(gè)：when,where,why,都在定語(yǔ)從句中擔(dān)任狀語(yǔ)。when 既可引導(dǎo)限制性定語(yǔ)從句，又可引導(dǎo)非限制性定語(yǔ)從句。where既可引導(dǎo)限制性定語(yǔ)從句，又可引導(dǎo)非限制性定語(yǔ)從句。why只能引導(dǎo)限制性定語(yǔ)從句。

定語(yǔ)從句關(guān)系副詞用法

關(guān)系副詞when的用法

when 既可引導(dǎo)限制性定語(yǔ)從句，又可引導(dǎo)非限制性定語(yǔ)從句。先行詞是時(shí)間名詞，在從句中充當(dāng)時(shí)間狀語(yǔ)，相當(dāng)于“介詞+which”。如：

Can you tell me the time when the film will start?―Can you tell me the time at which the film will start? 請(qǐng)告訴我電影什么時(shí)候開(kāi)始好嗎?(限制性定語(yǔ)從句)

I will never forget the day, when I joined the Party.―I will never forget the day, on which I joined the Party. 我入黨的那一天，我永遠(yuǎn)不會(huì)忘記。(非限制性定語(yǔ)從句)

關(guān)系副詞where的用法

where既可引導(dǎo)限制性定語(yǔ)從句，又可引導(dǎo)非限制性定語(yǔ)從句。先行詞是地點(diǎn)名詞，在從句中充當(dāng)?shù)攸c(diǎn)狀語(yǔ)，相當(dāng)于：“介詞+which”。如：

This is the school where I studied a few years ago.―This is the school in which I studied a few years ago. 這就是我?guī)啄昵八�在讀書(shū)的學(xué)校。(from www.yygrammar.com)

Let’s go to the concert, where you will find much fun.―Let’s go to the concert, in which you will find much fun. 我們?nèi)ヒ魳?lè)演唱會(huì)吧，在那里你會(huì)找到很大的樂(lè)趣。

關(guān)系副詞why的用法

why只能引導(dǎo)限制性定語(yǔ)從句，先行詞只有reason一詞，在從句中充當(dāng)原因狀語(yǔ)，相當(dāng)于：“for + which”。如：

Do you know the reason why he is not here now?―Do you know the reason for which he is not here now?你知道他還沒(méi)有來(lái)這兒的原因嗎?