英语句子语法问题Mankind must estabilsh a set of positive values with

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/25 03:39:27

英语句子语法问题
Mankind must estabilsh a set of positive values with which to secure its own survival.这是一个定语从句吗,怎么没主语,而且又像一个不定式的状语从句

with which to secure its own survival 是一个介词短语,作a set of positive values 的后置定语.

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