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定語從句之專題三:as引導(dǎo)定語從句(系統(tǒng)講解內(nèi)在原理)
作者:高  偉  文章來源:本站原創(chuàng)  點(diǎn)擊數(shù)  更新時(shí)間:2017-07-20  文章錄入:admin  責(zé)任編輯:admin

 

2.asthat的區(qū)別。

①such…as(代詞)引導(dǎo)定語從句,such…that(連詞)引導(dǎo)結(jié)果狀語從句。如,

●He is such a good boy as everyone likes.他是個(gè)人人都喜歡的好男孩。

(從句缺成分(缺賓語),因此as是代詞(作成分))

●He is such a good boy that everyone likes him.他是個(gè)好男孩,以至于人人都喜歡他。

(從句不缺成分,因此that是連詞(不作成分))

②the same…as(代詞)…,表示兩物相似;the same…that(代詞)…,表示兩物同一物。如,

●This is the same pen as I used yesterday.這是和我昨天用的一樣的鋼筆。

●This is the same pen that I used yesterday.這是我昨天用過的那支鋼筆。

注意:the same …,可以與代詞as/that連用,也可以與副詞when/where等連用。如,

●This is the same place where we had the party that day.where作狀語)

 

(二)as(連詞)引導(dǎo)評(píng)述性狀語從句

評(píng)述性狀語從句,表示說話人的看法、態(tài)度、解釋或評(píng)論。as的意思是正如/

學(xué)習(xí)這塊內(nèi)容,關(guān)鍵在于區(qū)別aswhich。本書認(rèn)為,as(連詞)引導(dǎo)評(píng)述性狀語從句,which(代詞)引導(dǎo)非限制性定語從句。所有的能換用/不能換用的情況,都可以用這點(diǎn)區(qū)別推導(dǎo)出來。下文中,1.講不能換用的情況;2.講能換用的情況。14是重點(diǎn)內(nèi)容,23僅供了解。

1. as (連詞)引導(dǎo)評(píng)述性狀語從句,which (代詞)引導(dǎo)非限制定語從句。

1)引導(dǎo)詞詞性不同。as是連詞,which是代詞。由此可以推導(dǎo)出:

因?yàn)?/SPAN>as是連詞,所以,as在從句中不作成分;which是代詞,所以,which在從句中作成分(主//表)。

●He is absent, as/(which×) it is often the case.

(因?yàn)閺木渲胁蝗背煞郑裕?/SPAN>as,不能用which

●He saw the girl, (as×)/which delighted him.

(因?yàn)閺木渲腥背煞郑裕?/SPAN>which,不能用as。)

因?yàn)?/SPAN>as是連詞,所以,只能指代整個(gè)主句;which是代詞,所以,可以指代整個(gè)主句或其中某個(gè)詞。

●The moon, which/(as×) is 384,000 kilometres away from the earth, creates many beautiful stories.

●The shed, which/(as×) we often played in, has lasted for a long time.

因?yàn)?/SPAN>as是連詞,意思是正如/,所以,只用于肯定句(若用于否定句則語意不順);which是代詞,沒有正如/之意,可以用于肯定句或否定句。

●She has been absent again, which/as is expected.

●He came here very late, which/(as×) is unexpected (=not expected).

 

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