Its relatively fewer chapters make clear the dependence of all animals, including humans, on the plant world.
句中,including humans,on the plant world都是后置定语吗,都修饰dependence?
All animals depend on the plant world.这是一个主谓+必具性状语结构。当depend改为同源名词时dependence时,原主语由介词of引出,原必具性状语保持不变,得到 the dependence of animals on the plant world. 语法上of介词短语和on介词短语不再是主语和状语,而分析为名词dependence的限制性定语。including humans为插入语,是说话人对animals的补充说明。二个逗号的使用是因为插入语的缘故。如果去掉插入语,二个逗号同时消失。
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