托福閱讀之修辭目的題

 就目前沸沸揚揚的托�？荚嚫母镞@個話題而言，其實大家都應該知道，托福閱讀部分的難度是不會因為少了幾道題而有所下降的。少了的無非還是詞匯題或者個別事實信息題而已。所以在平時的訓練中，基本功還是要非常扎實，這才是“制勝法寶”。

今天我們還是就托福閱讀中的一道題型進行細致講解。就是修辭目的。眾所周知，修辭目的考查的是學生對于細節(jié)背后所支撐論點的把控。作者說這個細節(jié)到底是為了什么。

Paragraph 2: The term "fossil" often implies petrifaction, literally a transformation into stone. After the death of an organism, the soft tissue is ordinarily consumed by scavengers and bacteria. The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time. Indeed, unaltered shells of marine invertebrates are known from deposits over 100 million years old. In many marine creatures, however, the skeleton is composed of a mineral variety of calcium carbonate called aragonite. Although aragonite has the same composition as the more familiar mineral known as calcite, it has a different crystal form, is relatively unstable, and in time changes to the more stable calcite.

3.Why does the author mention "aragonite" in the passage?(3)

To emphasize that some fossils remain unaltered for millions of years

To contrast fossil formation in organisms with soft tissue and in organisms with hard shells

To explain that some marine organisms must undergo chemical changes in order to fossilize

To explain why fossil shells are more likely to survive than are fossil skeletons

這篇是講跟化石形成相關(guān)的一篇文章。我們來了解一下。首先，我們還是先看一下題干，作者為什么要提到 "aragonite"，具體這是什么意思，很多首考學生或者詞匯量還不是非常好的同學，也不必太過于擔心。特殊名詞在原文中，多少都有背景環(huán)境，通過環(huán)境，我們是會大概了解它是什么。

接下來文章的理解，對于最后一道六選三的題目來講，段落理解是務(wù)必要非常完整的。如果時間非常緊張，我們才不得已選擇定位-做題的模式。文章首句就告訴我們“化石”的含義。The term "fossil" often implies petrifaction, literally a transformation into stone. 接下來進一步解釋形成過程。After the death of an organism, the soft tissue is ordinarily consumed by scavengers and bacteria. The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time. 有機體死亡后，軟組織通常被食腐動物和細菌所吞噬。蝸�；蚋蝌鄣目諝た赡軙�被留下，如果它足夠耐久和抗溶解，它可能會在很長一段時間內(nèi)基本保持不變。接下來indeed來強調(diào)，進一步解釋多長時間保持不變。 Indeed, unaltered shells of marine invertebrates are known from deposits over 100 million years old.接下來的這句，however，開始轉(zhuǎn)折。 In many marine creatures, however, the skeleton is composed of a mineral variety of calcium carbonate called aragonite. 然而，在許多海洋生物中，骨骼是由一種叫做霰石的碳酸鈣礦物組成的。我們從這句中了解到 我們題干的關(guān)鍵詞是一種化學物質(zhì)。接下來下一句 Although aragonite has the same composition as the more familiar mineral known as calcite, it has a different crystal form, is relatively unstable, and in time changes to the more stable calcite.霰石雖然與我們所熟知的方解石成分相同，但其晶體形態(tài)不同，相對不穩(wěn)定，隨著時間的推移，它會變成方解石。

所以作者說到 aragonite其實還是想強調(diào)一種變化。而能體現(xiàn)出變化的選項是C。

大家一定要注意，修辭目的題目的處理不一定是非要看定位句前面的句子的。正確精準的把控句間關(guān)系才能更好的解題，同時也會為后面的題目做好鋪墊。如果同學們想了解更多托�？荚嚱忸}技巧，或者想了解托福課程，可以撥打 >>>400-618-8866 或 >>>【點擊此處咨詢】，得到新通西安語言培訓顧問的專業(yè)解答！