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  • 1 # 淺雨入夏

    AS在定語從句中的用bai法介紹如下:

    一、duas用作關係代詞和關係副詞引導限制性定zhi語從句dao,並在從句中作主語、賓語、狀語或表語,構成the same。

    先行詞之前一旦出現same, such, so, as這些詞時,而先行詞的後面又跟著一個從句,這時就要考慮是不是要用as作為關係詞來連線這個詞和這個句子。

    例句:

    1、No period in history has had as many important changes ashave taken place in the past century. (as 作主語)

    2、It is so easy a book as every schoolboy can read. (as作賓語)

    二、as引導非限制性定語從句。as在定語從句中作主語、表語或賓語。as代指整個主句,而as引導的這個定語從句是用來補充說明整個主句的,可以放在主句之前或者之後。

    例句:

    1、As we all know, he studies very hard.(as代整個句子,作賓語)

    2、As is known to all, he is the best student in our class.(as代整個句子,作主語)

    擴充套件資料:

    使用時的注意事項:

    一、關係代詞which和as在引導非限制性定語從句時是有區別的。它們的區別就是是:which引導的非限制性定語從句,絕不能放在句首,而as則可以。

    例如:

    He studies very hard, as we all know.

    也可說:

    As we all know, he studies very hard.

    而要是換成which的話:

    He studies very hard, which we all know. 在句中時,as有“正如”“就像”之意,而which則沒有此意。

    二、which引導非限制性定語從句作從句裡面的介詞賓語時,介詞可以提到which前面。

    例句:

    Eric received training in computer for one year, after which he found a job in a big company.

    as引導非限制性定語從句作從句裡面的賓語時,不能把介詞提到as前面的。

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