so的含義和搭配的用法
單詞“so”，這個單詞雖短，也很常見，但要真正掌握它的用法，還著實不易，因為它詞意豐富，搭配眾多，且詞性詭異，在SAT語法考試部分，其出鏡率很高，新東方上海學校VIP學習中心SAT團隊的老師提醒各位考生千萬不能小覷它，一定要掌握好每一個含義和搭配的用法，在考試中才不會被“陷阱”迷惑。
一、“so”作為連詞
1. 釋義：for that reason;and therefore
例句：There are no more chairs available, so you'll have to stand.
1. The problem of copyright violation, frequently compounded in certain countries because the sale and use of copyrighted materials are not tightly controlled. (OG：第八套題)
A. violation, frequently compounded in certain countries because
B. violation, frequently compounded in certain countries and
C. violation, frequently compounded in certain countries when
D. violation is frequently compounded in certain countries where
E. violation is frequently compounded in certain countries so
此題的考點是不完整句，謂語動詞部分缺少了用于構成被動語態(tài)的助動詞is，當答案范圍圈定D和E時，就需要從where和so來下手了。通讀題干，我們知道這里應該是因果關系，所以選擇E。
2. 釋義：used to say the reason for something
例句：Please be quiet so I can study.
此時也可以使用so that：I'll get a map so that we can plan where to go.
2. My mother always gave my sister and I (A) the same treats when we were little so that (B) neither of us would be (C) jealous of the other (D) . No error (E) (真題：09年10月)
此題的考點是代詞的格，答案為A。在這道題目中，so that是一個從屬連詞，表示“以便”。
二、“so”作為副詞
1. 釋義：used when you are emphasizing a fact by saying what the result of it is
例句：She was so tired that she almost fell asleep at the dinner table.
這就是大名鼎鼎的so...that句型，在SAT語法考試中屢屢出現哦!
3. The new regulations have so complicated the process of formulating a school budget to where no one on the Board of Education is eager to undertake the task. (真題：06年10月)
A. budget to where
B. budget, therefore
C. budget, even
D. budget as
E. budget that
此題答案為E，so...that表達了正確的語義邏輯。
2. 釋義：and so=and therefore
例句：Madeira has an ideal climate, and so it is not surprising that it has become a tourist paradise.
有的同學只知道so是連詞，因此看到and so的時候，會覺得是兩個連詞一起使用，任務是錯誤用法。其實在and so這個搭配中，and是連詞，so是副詞。請看題：
4. Fabric was very expensive in the United States before the Industrial Revolution, this is why scraps were saved and recycled into such items as patchwork quilts and doll clothes. (真題：09年1月)
A. Revolution, this is why
B. Revolution, this explains why
C. Revolution, and so
D. Revolution and so that
E. Revolution; resulting in
此題答案為C，and so改正了原文連寫句的錯誤。
3. so...as to：used when you are emphasizing a fact by saying what the result of it is
這個結構也表示“如此...以至于”，只不過后面要加動詞原形。請看題：
5. Cuban music was so popular in (A) the Colombian city of Cali thus becoming (B) the basis for (C) the dance scene that predominated (D) there during the 1940s. No error (E) (真題：10年1月)
此題答案為B，應該為as to become，以與前面的so構成搭配。
4. 同級比較的否定結構中：not so...as
大家都知道，as...as...表示是同級比較的肯定形式，在否定句中，前一個as可以換成so，這一點在SAT語法考試中也經?？疾?。請看題：
6. The director valued the actor not so much for his broad commercial appeal but because he approached every role with passion and intelligence. (真題：08年5月)
(A) but because he approached every role with passion and intelligence
(B) but because of his approaching every role with passion and intelligence
(D) but for being passionate and intelligent in approaching every role
(D) as for him approaching every role passionately and intelligently
(E) as for his passionate and intelligent approach to every role
此題答案為E，as與句中的not so構成比較結構，as后的for與not so后面的for構成平行。
5. (just) as ... so ...：formal used to compare two people or things, when they are similar
例句：Just as the French love their wine, so the English love their beer.
這個結構在SAT語法考試中出現了多次，如下面這道題：
7. Just as Ireland has produced many famous writers and the Netherlands on abundance of famous painters, so Finland has provided a large number of famous architects. (OG：第七套題)
(A) so Finland has provided a large number of famous architects
(B) Finland provides famous architects, and by large numbers
(C) Finland’s contribution is to provided famous architects in a large number
(D) and so then, for Finland, a large number of famous architects is provided
(E) and like them Finland has provided a large number of famous architects
此題答案為A。很多人以為just as是一個連詞，so也是連詞，不能在一起使用，其實是可以的。