定語(yǔ)從句as的用法總結(jié)
學(xué)生在學(xué)習(xí)過(guò)程中，常會(huì)遇到as作為關(guān)系代詞出現(xiàn)，學(xué)生對(duì)as定語(yǔ)從句多有疑惑，如下是小編給大家整理的定語(yǔ)從句as的用法總結(jié)，希望對(duì)大家有所作用。
(1) as引導(dǎo)的定語(yǔ)從句修飾表人或物的先行詞，即先行詞可以是人也可以是物；在定語(yǔ)從句中可以做主語(yǔ)、賓語(yǔ)或表語(yǔ)；常用于the sameas/suchas/as(so)as句型，as不論在定語(yǔ)從句中作何成分，均不能省略。
�、� 先行詞為人such teachers， as作主語(yǔ)
②I’ll buy the same bike as I lost yesterday. 先行詞為物the same bike，as作賓語(yǔ) ,指同一類事物 ※此時(shí)注意和the same that 引導(dǎo)的定語(yǔ)從句的區(qū)別
It’ that引導(dǎo)定語(yǔ)從句，作賓語(yǔ)，指同一個(gè)事物
※ She wore the same dress that she wore at Marys wedding. (the samethat特指同一個(gè)) 她穿著她在Mary婚禮上穿過(guò)的同一條裙子。 (the sameas 泛指同一類) 她穿著和她妹妹所穿的一樣的裙子。 那塊手表和我丟失的一模一樣。(the sameas 泛指同一類) 那就是我丟失的那塊手表。(the samethat特指同一個(gè)) ③The school is just the same one as it was 10 years ago.
先行詞為物the same one (school), as作表語(yǔ)
It’ 先行詞為物so heavy a box，as作賓語(yǔ)
此時(shí)應(yīng)注意as引導(dǎo)的定語(yǔ)從句和結(jié)果狀語(yǔ)從句such / sothat的`區(qū)分
It’ 結(jié)果狀語(yǔ)從句sothat如此以至于 ※He is such a good student as is liked by everyone.(定語(yǔ)從句，as在從句中作主語(yǔ)) （結(jié)果狀語(yǔ)從句suchthat） that在從句中不充當(dāng)任何成分，故不是定語(yǔ)從句，而是結(jié)果狀語(yǔ)從句
(2) as引導(dǎo)的非限制性定語(yǔ)從句可以修飾整個(gè)主句, 可以放在主句前，主句后或插入主句中間。此時(shí)as含有“正如” 之意。常用的as引導(dǎo)的非限制性定語(yǔ)從句固定表達(dá)有：
as we all know / as everyone knows / as is known to all / as is well-known (眾所周知)/ as I can remember(正如我所記得的) / as we expect / as was expected (正如預(yù)料的那樣)/ as often happens / as we all can see / as can be seen / as has been said before (如前所述)…
As everyone knows, Shakespeare is a famous writer.
Shakespeare is a famous writer, as everyone knows.
Shakespeare, as everyone knows , is a famous writer.
(3)注意which引導(dǎo)的非限制性定語(yǔ)從句也可以修飾整個(gè)主句, 但不能放在主句前，常譯為“這一點(diǎn)、這件事”。
She is working hard, which everyone can see.which引導(dǎo)的非限制性定語(yǔ)從句不能放在主句前 She is working hard, as everyone can see.﹦As everyone can see, She is working hard.
(4)注意當(dāng)修飾整個(gè)主句時(shí)，as引導(dǎo)的非限制性定語(yǔ)從句含“正如”之意，因此在意義上不能和主句相抵觸；which引導(dǎo)的非限制性定語(yǔ)從句則無(wú)此限制。如： 我們的球隊(duì)輸了比賽，這一點(diǎn)是未預(yù)料到的。此時(shí)不能用as。我們的球隊(duì)贏了比賽，正如預(yù)料的那樣。
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