如何区分that为表语从句的引导词和that为指代词?如题,Social science is that branch of intellectual enquiry which seeks to study humans and their endeavors in the same reasoned,orderly,systematic,and dispassioned manner that natural scientists use for the study of natural phenomena.

问题描述:

如何区分that为表语从句的引导词和that为指代词?
如题,
Social science is that branch of intellectual enquiry which seeks to study humans and their endeavors in the same reasoned,orderly,systematic,and dispassioned manner that natural scientists use for the study of natural phenomena.

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如果that没有先行词,就是表语从句的引导词.如果能找到先行词,就是代词.
上文中,第一个that明显就是表语从句,
第二个that能够找到一个先行词manner,所以为定语从句.