托福閱讀高難度文章長(zhǎng)難句實(shí)例解析：農(nóng)業(yè)在世界不同地區(qū)出現(xiàn)

　　Many prehistorians believe that farming may have emerged dependently in several different areas of the world when small communities, driven by increasing population and a decline in available food resources, began to plant seeds in the ground in an effort to guarantee their survival.

　　結(jié)構(gòu)劃分：

　　Many prehistorians believe that farming may have emerged dependently (in several different areas of the world) (when small communities, (driven by increasing population and a decline in available food resources), began to plant seeds in the ground in an effort to guarantee their survival).

　　深度分析：

　　這個(gè)句子的主干是：

　　Many prehistorians believe that從句

　　從句中的主干是：

　　farming may have emerged dependently

　　修飾一：(in several different areas of the world)，介詞短語(yǔ)

　　中文：在世界幾個(gè)不同地區(qū)

　　修飾二：(driven by increasing population and a decline inavailable food resources)，非謂語(yǔ)動(dòng)詞，相當(dāng)于形容詞修飾small communities

　　中文：迫于人口不斷增長(zhǎng)和可用食物資源減少

　　修飾三：(when small communities began to plant seeds in the ground in an effort to guarantee their survival)，從句

　　請(qǐng)大家注意此處的斷句問題。

　　從句的主謂被非謂語(yǔ)給隔開了。就是它：

　　(driven by increasing population and a decline inavailable food resources)

　　中文：當(dāng)一些小的群落開始在地里種植種子去努力保證他們生存時(shí)

　　參考翻譯：

　　許多史前學(xué)家認(rèn)為：當(dāng)一些小的群落迫于人口不斷增長(zhǎng)和可用食物資源減少壓力，開始在地里種植種子去努力保證他們生存時(shí)，農(nóng)業(yè)可能在世界幾個(gè)不同地區(qū)就獨(dú)立出現(xiàn)了。