例：Promising as it is for minority business, this increased patronage poses dangers for them, too. (華中科技大學2012年閱讀理解)

【句子分析】句子主干為this increased patronage poses dangers for them。Promising as it is for minority business為一個倒裝句，是as引導的讓步狀語從句。

【參考譯文】盡管對少數(shù)民族企業(yè)來說前景光明，但這種贊助的增加也對他們構(gòu)成了危險。

【知識點拓展】as 引導讓步狀語從句時，必須將表語、狀語或動詞原形提到as前面，具體用法如下：

一、名詞+ as + 主語+ 動詞

Child as he is，he knows how to make money quickly.盡管他是個孩子，但是他知道如何快速賺錢。

Rich people as they are, they are mean with money.盡管他們是有錢人，但是用錢很吝嗇

注意: 位于句首的名詞前習慣上不用冠詞，即使其前有形容詞修飾也不用冠詞。

二、形容詞+ as + 主語+ 動詞

Poor as he is，he is willing to help others.盡管他很窮，但是他樂于助人。

三、副詞+ as + 主語+ 動詞

Fast as you run，you are not likely to win the first place in the competition.盡管你跑得快，你也不可能在比賽中得第一。

四、動詞原形+ as + 主語+ 動詞

Try as he might，he couldn’t get home on time.盡管他盡力了，但是也未能準時到家。

五、分詞+ as + 主語+ 動詞

Accustomed as we are to speaking of the films made before 1927 as “silent”, in the full sense of the word， the film has never been silent.盡管我們習慣于將1927年以前的電影稱為"無聲電影"，但是就無聲這個詞完整的意義上來說，電影從未真正的無聲過。

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