要說到我們GMAT SC的高頻考點，自然會想到邏輯語義、修飾、比較等高頻考點。那今天就帶著大家一起來看看高頻考點裡比較重要，也是體現整個GMAT SC核心原則的一個高頻考點：邏輯語義。
那首先，我們都知道，拿到一道SC，先幹嘛，先看主幹，再看修飾，主幹修飾決定整體邏輯。所以這就決定了所有的考點和所有的語法，都是為邏輯語義服務的。並且，一個句子要說的清晰，是不是得有邏輯，對吧，所以不管是高分段的題庫還是低分段的題庫，主要是句子要表達正確，就得有邏輯，只不過是邏輯簡單一點與邏輯繞一點罷了，所以同學們一定要堅定信心，在有基礎語法和掌握考點的基礎上，看語義，就沒啥問題了。
那我們來看兩道邏輯語義的題目，感受一下SC的邏輯是怎麼個考法。
1.Even though Clovis points, spear points with longitudinal grooves chipped onto their faces, have been found all over North America, they are named for the New Mexico site where they were first discovered in 1932.
A、Even though Clovis points, spear points with longitudinal grooves chipped onto their faces, have been found all over North America, they are named for the New Mexico site where they were first discovered in 1932.
B、Although named for the New Mexico site where first discovered in 1932, Clovis points are spear points of longitudinal grooves chipped onto their faces and have been found all over North America.
C、Named for the New Mexico site where they have been first discovered in 1932, Clovis points, spear points of longitudinal grooves chipped onto the faces, have been found all over North America.--沒有了讓步那一層關係
D、Spear points with longitudinal grooves that are chipped onto the faces, Clovis points, even though named for the New Mexico site where first discovered in 1932, but were found all over North America.--
E、While Clovis points are spear points whose faces have longitudinal grooves chipped into them, they have been found all over North America, and named for the New Mexico site where they have been first discovered in 1932.
解析：
邏輯語義，作者強調的重心，也就是原文邏輯是：“儘管克洛維矛頭(臉上有縱槽的矛頭)在北美各地都能找到，但它們因1932年在新墨西哥州首次被發現而得名。”沒有問題，原文主幹修飾邏輯沒問題， 就不輕易變了，先保留。
B：-雖然克洛維矛頭得名於1932年第一次發現的新墨西哥州遺址，但它是在北美各地發現的一種槍尖，長有一些縱向凹槽。 這前後有關係嗎？雖然這是這樣一個東西，但是它在北美被找到。前後無邏輯關係，就像是在說雖然今天天氣很好， 但我穿的是黑色衣服。一個道理。排除。
C：主幹修飾都沒啥問題，過去分詞在句首後面主句主語立馬給出的是這個points，也正確。但為啥對也不選？？因為從根本上沒有了原文那一層讓步的關係了，改變邏輯，排除。
D: 很好排除，改變句子關係，though和but不連用
E：Eand named和have been found並列邏輯語義錯誤，並且and前後不平行。前面是have been found謂語，後面是過去分詞named for 。排除。
所以縱觀此題，除了正確選項A, 其它選項的邏輯重心均發生了偏移。
2.The computer company reported strong second-quarter earnings that surpassed Wall Street's estimates and announced the first in a series of price cuts intended to increase sales further.
A、The computer company reported strong second-quarter earnings that surpassed Wall Street's estimates and announced the first in a series of price cuts intended to increase sales further.
B、The report of the computer company showed strong second-quarter earnings, surpassing Wall Street's estimates, and they announced the first in a series of price cuts that they intend to increase sales further.
C、Surpassing Wall Street's estimates, the report of the computer company showed strong second-quarter earnings, and, for the purpose of increasing sales further, they announced the first in a series of price cuts.
D、The computer company reported strong second-quarter earnings, while announcing the first in a series of price cuts for the purpose of increasing sales further that surpass Wall Street's estimates.
E、The computer company, surpassing Wall Street's estimates, reported strong second-quarter earnings, while announcing that to increase sales further, there would be the first in a series of price cuts.
解析：
先看主幹和修飾判定整體邏輯 是否正確，主幹是 company reported earnings( 啥樣收益？超過華爾街的收益，可以， )and 發出第二個動作announced（ ）：原句結構修飾邏輯合理，先保留，後面的沒有更好就這個，有更好就推翻。
B：變成了the report showed ... ，and they annouced，提問they指誰？前面一整句話主句：report
C：分詞短語放句首當然可以從後面主語要立馬發出動作判斷排除，但從主幹來：...也是改變了重心的
D , E把原來並列的謂語動詞變成了while doing形式，根本上改變了邏輯，且句子while doing的用法，前面句子和while之間是不加逗號的，比如：lm watching TV while eating。
綜上所述，同學們一定要從邏輯語義做SC,鞏固語法，掌握考點，語義為王。祝同學們都能順利出分！加油！
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