as引導(dǎo)定語從句

　　引導(dǎo)定語從句的關(guān)系代詞有who, whom, whose, which, that； 關(guān)系副詞有where, when, why，如何確定定語從句的引導(dǎo)詞。下面是小編為你帶來的as引導(dǎo)定語從句 ，歡迎閱讀。

　　As 引導(dǎo)的定從

　　as引導(dǎo)的定從很多人不是很熟悉，我們下面專題講解。

　　在定從中，as 是關(guān)系代詞，在從句作主語或賓語。

　　1 限制性定從（只用在固定結(jié)構(gòu)中）

　　(1) such +N+as….

　　Such inns as there were were generally dirty and flea-ridden.（as 作主語）

　　=There were inns and inns were generally dirty and flea-ridden.

　　那有一些小旅館，旅館通常很臟而且布滿跳蚤。

　　Such people as are indolent are not easy to make their goals a reality.

　　懶惰的人不容易實現(xiàn)目標。

　　These are such points as they discussed at the meeting.

　　這些是他們在會上討論的觀點。

　　(2) as +adj +N +as +…

　　You should drink as much water as is required. （第二個as 作主語）

　　你應(yīng)該盡可能多的喝被要求喝的`水。

　　You’d better make as few mistakes as we did.（第二個as作賓語，引導(dǎo)定從）

　　你應(yīng)該盡可能少犯我們犯過的錯誤。

　　(3) the same +N +as…

　　He uses the same book as I bought.

　　他平時用的書和我之前買的那本一樣。

　　He uses the same book that I bought.

　　他平時用的書就是我之前買的那本。

　　2 as 引導(dǎo)非限制性定從

　　要點：as引導(dǎo)定語從句的先行詞是一句話。

　　例如：

　　As the proverb says, each coin has two sides.

　　=Each coin has two sides, as the proverb says.

　　=Each coin, as the proverb says, has two sides.

　　=Each coin has two sides, as the proverb says.

　　=Each coin has two sides, which the proverb says.

　　注意：as引導(dǎo)的非限制性定從可放在句首、句中、句末；

　　which引導(dǎo)一個句子為先行詞的非限制性定從只能放在句末。

　　以下是固定句式：

　　As is often pointed out, sth is a two-edged weapon which can be used equally for good or evil.

　　正如經(jīng)常指出的，...是一把雙刃劍，既可以用于造富，也可以用于為害。

　　As is depicted in the figure,the pork price has been rising.

　　As we can see in thefigure, the pork price has been rising.

　　常用寫作句式:

　　As is obviously betrayed in the figure/chart, …

　　As is vividly depicted in the cartoon, …

　　As we can see in the picture, …

　　As 引導(dǎo)定從與狀從的區(qū)別

　　As 是否在從句中做成分

　　As he says,Tom is wearing two hats.

　　（定語從句）

　　As he says it, Tom is wearing two hats.

　　（狀語從句，as 不做成份，只起連接作用，it指的是整個句子：Tom is wearing two hats.)

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