英語四級閱讀理解長難句解析
一、It enrolls 90,000 students, a statistic used to support its claim to be the largest private university in the country.
分析主干：It enrolls 90,000 students, a statistic...
句中的a statistic 是對90,000 students 的進一步補充說明，可以算作插入語。used過去分詞短語作后置定語，修飾a statistic，一個用來......的數據。
譯文：它招生人數達9 萬，這個數字使其號稱是美國最大的私立大學。
二、 In a survey conducted for eCornell, the DL division of Cornell University, less than a third of the respondents expected the quality of the online course to be as good as the classroom course.
分析主干：... less than a third... expected the quality... to be as good
句中兩個逗號間的內容是插入成分，用以解釋說明eCornell。本句是簡單句，謂語部分用了復合賓語，不定式to be...在句中作賓語quality 的補語。as good as...是同級比較結構。
譯文：在為康奈爾在線做的一次調查中，只有不到三分之一的受訪者預計在線課程的質量與在校課程的一樣好。
三、On Dec. 11, 2001, as part of the effort to increase homeland security, federal and local authorities in 14 states staged Operation Safe Travel -raids on airports to arrest employees with false identification .
分析主干院... authorities... staged Operation Safe Travel ...
句首On 和as 引導的兩個介詞短語都作狀語，一個是時間狀語，一個是方式狀語。破折號后面的名詞詞組，中心詞是raids, 它是前面引號中內容的同位語;它后面有兩個修飾成分，一個是介詞短語on airports，一個是不定式短語to arrest...。
譯文：在2001 年12 月11 日，為了加強國土安全，聯邦政府和14 個州的地方政府對機場發起了名為安全旅行行動的突襲，逮捕了擁有假身份證明的機場員工。
四、She stayed in the Northwest, although the test could not be more specific than somewhere between eastern Oregon and western Wyoming.
分析主干：She stayed...
although 引導讓步狀語從句，more... than 是比較結構。somewhere between... and...結構中，between 短語修飾somewhere。比較結構部分的意思是最多也就具體定位在俄勒岡州東部到懷俄明州西部之間的某個地方。
譯文：她曾住在西北地區，雖然該測試最多只能把這一地區精確到俄勒岡州東部和懷俄明州西部之間。
一、It enrolls 90,000 students, a statistic used to support its claim to be the largest private university in the country.
分析主干：It enrolls 90,000 students, a statistic...
句中的a statistic 是對90,000 students 的進一步補充說明，可以算作插入語。used過去分詞短語作后置定語，修飾a statistic，一個用來......的數據。
譯文：它招生人數達9 萬，這個數字使其號稱是美國最大的私立大學。
二、 In a survey conducted for eCornell, the DL division of Cornell University, less than a third of the respondents expected the quality of the online course to be as good as the classroom course.
分析主干：... less than a third... expected the quality... to be as good
句中兩個逗號間的內容是插入成分，用以解釋說明eCornell。本句是簡單句，謂語部分用了復合賓語，不定式to be...在句中作賓語quality 的補語。as good as...是同級比較結構。
譯文：在為康奈爾在線做的一次調查中，只有不到三分之一的受訪者預計在線課程的質量與在校課程的一樣好。
三、On Dec. 11, 2001, as part of the effort to increase homeland security, federal and local authorities in 14 states staged Operation Safe Travel -raids on airports to arrest employees with false identification .
分析主干院... authorities... staged Operation Safe Travel ...
句首On 和as 引導的兩個介詞短語都作狀語，一個是時間狀語，一個是方式狀語。破折號后面的名詞詞組，中心詞是raids, 它是前面引號中內容的同位語;它后面有兩個修飾成分，一個是介詞短語on airports，一個是不定式短語to arrest...。
譯文：在2001 年12 月11 日，為了加強國土安全，聯邦政府和14 個州的地方政府對機場發起了名為安全旅行行動的突襲，逮捕了擁有假身份證明的機場員工。
四、She stayed in the Northwest, although the test could not be more specific than somewhere between eastern Oregon and western Wyoming.
分析主干：She stayed...
although 引導讓步狀語從句，more... than 是比較結構。somewhere between... and...結構中，between 短語修飾somewhere。比較結構部分的意思是最多也就具體定位在俄勒岡州東部到懷俄明州西部之間的某個地方。
譯文：她曾住在西北地區，雖然該測試最多只能把這一地區精確到俄勒岡州東部和懷俄明州西部之間。
