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考研英語復習指導經典句解析五

來源: 時間:2009-04-23 14:41:14
 1. Studies by Hargrave and Geen estimated natural community grazing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers.
  由哈格雷夫(Hargrave)和吉恩(Geen)所進行的研究,對自然條件下的群落捕食速率進行了估計,其手段是通過測量出實驗室內單獨的浮游動物種類的捕食速率,然后利用已知的食草動物種群密度,計算出實地狀況下的群落捕食速率。
  大難句類型:復雜修飾
  解釋:本句對閱讀者的閱讀能力提出了更高的要求,不但要求讀者讀清楚句子的復雜的結構,而且對讀者的詞匯能力也提出了更高的要求。
  By以前結構無需解釋,by以后有兩個作介詞賓語短語的動名詞結構,measuring和后面表示并列和順接的and then之后的computing,說的是計算方法;前一個measuring說的是先算出實驗室中浮游動物品種的單位捕食速率,后面的computing前其實省略了一個by,而且在這個動名詞結構中還包括一個分詞結構using the known population density of grazers,用已知的捕食者的種群密度計算出其野外的群體捕食速率。整個的by以后的計算過程簡單了就是:實驗室單位速率×野外密度=野外群體速率
  另外本句中的詞匯也頗有迷惑性;雖然沒有太難的單詞,但是很多單詞都是同義詞和反義詞,容易讓人讀混;(斜線分隔同義詞,冒號分隔反義詞)
  estimate/measure/compute; feeding rates/grazing rates; zooplankton/grazers; natureal/field; laboratory community; individuall
  意群訓練:Studies by Hargrave and Geen estimated natural community graz-ing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers.
  2. In the periods of peak zooplankton abundance,that is,in the late spring and in the summer,Haney recorded maximum daily community grazing rates,for nutrient-poor lakes and bog lakes,respectively,of 6.6 percent and 114 percent of daily phytoplankton production.
  在浮游動物數量激增的高峰期,亦即在春季后期以及夏季,哈尼記錄了比較大程度上的每日群落食草比率,對于營養(yǎng)物不充足的湖和沼澤湖而言,分別為每日浮游植物繁殖量的6.6%和114%.
  難句類型:插入語解釋
  句中有兩組插入語,每組兩個插入語,尤其是第二組,把rate of從中間劈開。不過因為句義尚好理解,所以本句只是有一點別扭,但不算太難。
  意群訓練:In the periods of  peak zooplankton abundance,that is,in the late spring and in the summer,Haney recorded maximum daily community grazing rates,for nutrient-poor lakes and bog lakes,respectively,of 6.6 percent and 114 percent of daily phytoplankton production.
結束

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