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讀懂GRE、GMAT的閱讀理解的方法
眾所周知大家對GRE、GMAT的閱讀理解，必須使用結構化的巡讀法進(jìn)行，效率高，收效高，因為GRE以及GMAT閱讀理解的規律性是非常強，同時(shí)我們閱讀是閱讀其文章的邏輯，因此是用邏輯思維操作邏輯閱讀，但是我們也要知道能做對閱讀題目的同時(shí)，我們也要通過(guò)每一篇GRE、GMAT閱讀文章來(lái)強化訓練自己實(shí)實(shí)在在的閱讀能力，例如：長(cháng)難句的分析能力、詞匯的積累，寫(xiě)作素材的積累、以及寫(xiě)作結構的掌握�？梢哉f(shuō)，每一篇GRE閱讀理解都是我們備考GRE、GMAT寫(xiě)作的Issue部分的最好的素材庫以及范文展示，因此我在課堂上總會(huì )要求大家要學(xué)會(huì )利用GRE閱讀來(lái)幫助我們提高寫(xiě)作的能力�，F在，我們拿GRE閱讀NO題的NO8-1這篇文章做一個(gè)示范，來(lái)說(shuō)明一下除了我們做對每一個(gè)閱讀選擇題以外，我們應該從閱讀文章中獲得些什么資源，提煉一個(gè)文章的哪些“語(yǔ)言要素”有助于英語(yǔ)能力的提高、GRE/GMAT寫(xiě)作能力的提高，而不只是應試閱讀能力的提高。
NO8-1，我們從“詞--句--篇章”來(lái)談?wù)勥@篇文章。
原文：
Geologists have long known that the Earth's mantle is heterogeneous, but its spatial arrangement remains unresolved—is the mantle essentially layered or irregularly heterogeneous? The best evidence for the layered-mantle thesis is the well-established fact that volcanic rocks found on oceanic islands, islands believed to result from mantle plumes arising from the lower mantle,are composed of material fundamentally different from that of the midocean ridge system, whose source, most geologists contend, is the upper mantle.Some geologists, however, on the basis of observations concerning mantle xenoliths, argue that the mantle is not layered, but that heterogeneity is created by fluids rich in "incompatible elements" (elements tending toward liquid rather than solid state) percolating upward and transforming portions of the upper mantle irregularly, according to the vagaries of the fluids' pathways. We believe, perhaps unimaginatively, that this debate can be resolved through further study, and that the underexplored midocean ridge system is the key.
一、難詞
spatial: a.1.空間的，太空的；2.存在(或者發(fā)生)于宇宙空間的
plume: n.1.羽狀物2.柱，地柱
xenolith:俘虜巖
percolate:v.1.滲透2.擴散到，彌漫于
portions: n.一部分
二、難句
1.the best evidence for the layered-mantle thesis is the well-established fact that volcanic rocks found on oceanic islands，islands believed to result from mantle plumes arising from the lower mantle，are composed of material fundamentally different from that of the mid-ocean ridge system， whose source，most geologists contend，is the upper mantle.
對于地幔分層論點(diǎn)來(lái)說(shuō)，最好的證據乃這樣一個(gè)確認的事實(shí)，即在那些海洋島嶼——這些島嶼據信是源于由下層地幔升上來(lái)的地幔柱狀溶巖流(mantle plume)——上發(fā)現的火山巖石，是由與海洋中部山脊系統的物質(zhì)根本不同的物質(zhì)構成的，而這一海洋中部山脊系統的成因，大多數地質(zhì)學(xué)家論辯道，為上部地幔。
難句類(lèi)型：復雜修飾、插入語(yǔ)
解釋?zhuān)罕揪淝懊娴闹鞲刹⒉凰汶y，即the evidence is the fact that，難就難在fact之后說(shuō)明fact 的同位語(yǔ)從句。此從句中既有大段插入語(yǔ)，又有從句，較為難讀。同位語(yǔ)從句的主語(yǔ)是volcanic rocks，主語(yǔ)后面的found on oceanic islands是分詞修飾volcanic rocks的；islands后面又有一個(gè)說(shuō)明islands的同位語(yǔ)islands believed to result from mantle plumes arising from the lower mantle,此同位語(yǔ)實(shí)際起到一個(gè)分隔主謂的同位語(yǔ)的作用。其后是謂語(yǔ)動(dòng)詞are composed/of fundamentally different from that of the midocean ridge system, whose source, most geologists contend, is the upper mantle。
句中有一些專(zhuān)有詞匯。如果拋開(kāi)文章不說(shuō)，單看這一個(gè)句子，則句首的layered mantle thesis就難以理解。但是如果讀者能夠讀懂句子的大致意思，看到layered mantle thesisr最有力證據就是其材料fundamentally different from… the upper mantle,這應該可以推測出，既然不同于上層地幔，則這個(gè)理論一定是在說(shuō)地幔有不同的層面。
2. some geologists, however, on the basis of observations concerning mantle xenoliths, argue that the mantle is not layered, but that heterogeneity is created by fluids rich in "incompatible elements" (elements tending toward liquid rather than solid state) percolating upward and transforming portions of the upper mantle irregularly, according to the vagaries of the fluids’ pathways. (4+)
但是，某些地質(zhì)學(xué)家，以對地幔捕虜巖體(xenolith)所作的觀(guān)察為依據，指出地幔并非是分層排列的，相反，地幔的異質(zhì)性是由那些富含“不相容成分”的流質(zhì)構成的，這些成分趨向于流體而非固體的狀態(tài)，自下而上滲透擴散，并依照這些流質(zhì)流向的任意性，不規則地將上部地幔的某些部分予以改變。
難句類(lèi)型：復雜修飾、插入語(yǔ)
解釋?zhuān)罕揪涞闹骶渲杏幸粋�(gè)長(cháng)插入語(yǔ)however, on the basis of observations concerning mantle xenoliths,割裂了主謂，但句子的主要難度還是在that引導的賓語(yǔ)從句中，從句中有由but 所連接的兩個(gè)句子，一起延續到句末。首選是rich in incompatible elements修飾fluids；后面又有一個(gè)同位語(yǔ)和一個(gè)分詞結構，都是修飾incompatible elements的，最后還有一個(gè)狀語(yǔ)來(lái)修飾那個(gè)分詞結構，層層修飾，比較復雜。
三、文章結構
Ts是文章的第一句，因此這一篇短文章是結論解釋型。文章開(kāi)始說(shuō)出了地幔是heterogeneous,然后又指出了他的spatial arrangement remains unresolved,然后提出了兩種理論，一是layyered-mantle thesis,另外一個(gè)是irregularly heterogeneous.然后分別對這兩種理論進(jìn)行describe.最后作者指出，We believe, perhaps unimaginatively, that this debate can be resolved through further study, and that the underexplored midocean ridge system is the key.
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