Og12-83句子成分问题

红尘道士 · 发表于 2009-12-27 06:47:22

In 2000,a mere two dozen products accounted for half the increase in spending on prescription drugs,a phenomenon that is explained not just by the fact that drugs are becoming more expensive but also by the fact that doctors are writing many more prescriptions for higher-cost.

这个答案没有问题，可是分析到句子成分时，就有了疑问，a phenomenon 后面跟定语从句，就是一个名词，主句后跟一个名词，是什么成份。同位语么？

snail007 · 发表于 2009-12-27 07:41:07

同位语

davidliuscu · 发表于 2011-4-26 23:35:40

phenomenon做前面整个主句的同位语吗？有此用法吗？

xwnh6145 · 发表于 2011-4-26 23:38:05

davidliuscu · 发表于 2011-4-26 23:54:41

谢谢，唉，看来真的需要看看语法书了，都忘了

Og12-83句子成分问题

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