该内容是考试会涉及到的知识点，北京张博士医考中心搜集整理，请参考。

　　例句：

　　Davidson’s article is one of a number of pieces that have recently appeared making the point that the reason we have such stubbornly high unemployment and declining middle-class incomes today is largely because of the big drop in demand because of the Great Recession,but it is also because of the advances in both globalization and the information technology revolution,which are more rapidly than ever replacing labor with machines or foreign workers.(2013英语二Text 1)

　　【主干】

　　①主句Davidson’s article is one of a number of pieces

　　②定语从句(修饰pieces)that have recently appeared

　　③状语making the point

　　④同位语从句(修饰point)that the reason is largely because of the big drop in demand because of the Great Recession【并列but】it is also because of the advances in both globalization and the information technology revolution

　　⑤定语从句(修饰reason)we have such stubbornly high unemployment and declining middle-class incomes today

　　⑥定语从句(修饰advances)which are more rapidly than ever replacing labor with machines or foreign workers.

　　【主句】

　　Davidson’s article is one of a number of pieces

　　①主干：主语Davidson’s article，系动词is，表语one of a number of pieces

　　②修饰：a number of pieces作后置定语修饰one，a number of数量短语作前置定语修饰pieces

　　【定语从句】(先行词pieces)

　　that have recently appeared

　　①主干：主语that，谓语have appeared

　　②修饰：状语recently

　　【状语】(修饰主句整个句子)making the point

　　v.ing结构

　　同位语从句(修饰point)

　　that the reason is largely because of the big drop in demand because of the Great Recession【并列but】it is also because of the advances in both globalization and the information technology revolution

　　引导词that不作成分

　　①主干：主语the reason，系动词is，表语because of the big drop

　　②修饰：in demand作定语修饰drop;because of the Great Recession原因状语修饰主句

　　→并列句but it is also because of the advances in both globalization and the information technology revolution

　　并列连词but

　　①主干：主语it(指代the reason)，系动词is，表语because of the advances

　　②修饰：also并列连词;【并列的介词短语：介词+n.形式】in both globalization and the information technology revolution作定语修饰advances

　　定语从句(修饰reason)

　　we have such stubbornly high unemployment and declining middle-class incomes today

　　①主干：主语we，谓语have，宾语such unemployment and declining middle-class incomes

　　②修饰：stubbornly作状语修饰形容词high;high作前置定语修饰unemployment;declining和middle-class作前置定语修饰incomes;today状语修饰整个句子。

　　定语从句(修饰advances)

　　which are more rapidly than ever replacing labor with machines or foreign workers.

　　①主干：主语which，谓语are replacing，宾语labor

　　②修饰：more rapidly than【副词】with machines or foreign workers【介词短语：介词+n.形式】作状语修饰谓语are replacing

　　「张博士医考www.guojiayikao.com整理，如有转载，请注明出处」