which在这个句子里起的作用是什么Inpracticalterms,whatSubjectConfirmationsaysis"thesearetheconditionsunderwhichanattestingentity(somebodytryingtousetheassertion)ispermittedtodoso".其中which的作用,我理解有

Question

which在这个句子里起的作用是什么
In practical terms,what SubjectConfirmation says is "these are the conditions under which an attesting entity (somebody trying to use the assertion) is permitted to do so".
其中which的作用,我理解有三：
1.which 指的就是SubjectConfirmation
2.under which引导的状语从句
3.which 指的是conditions
请问那种对,或者是有另外的解释,最好帮说明一下原因

Answer 1

under which an attesting entity is permitted to do so这是一个定语从句,which指代的是conditions,状语从句与定语从句一个显著的区别就在于看这个从句是修饰名词的还是修饰谓语的,很显然这个从句是修饰conditions的,condition是先行词被which所指代,同时定语从句的引导词which 连同它前面的介词under一道引导an attesting entity is permitted to do so",构成一个定语从句,同时under which这样一个介宾短语在后便充当定语从句中的状语.