考研英語長難句詳解

　　35. The historian Frederick J. Turner wrote in the 1890 s that the agrarian discontent that had been developing steadily in the United States since about 1870 had been precipitated by the closing of the internal frontier that is，the depletion of available new land needed for further expansion of the American farming system. (4)史學(xué)家弗雷德里克.杰.特納(Frederick J.Turner)于十九世紀(jì)九十年代著述道，美國約自18世紀(jì)70年代以來一直在持續(xù)不斷發(fā)展的農(nóng)民不滿，由于國內(nèi)邊遠(yuǎn)地區(qū)(internal frontier)的封閉而更趨加劇 亦即是說，美國農(nóng)業(yè)系統(tǒng)進(jìn)一步擴(kuò)展所必需的可資利用的新土地幾近耗竭。

　　難句類型：復(fù)雜修飾

　　解釋：典型的句子套句子。主句是F.J.T. wrote that，賓語從句中主干是the agrarian discontent had been precipitated by the closing of the internal frontier，在從句的主語the agrarian discontent后面又來了一個定語從句。

　　意群訓(xùn)練：The historian Frederick J. Turner wrote in the 1890 s that the agrarian discontent that had been developing steadily in the United States since about 1870 had been precipitated by theclosing of the internal frontier that is，the depletion of available new land needed for further expansion of the American farming system.