题目

句子结构,成分
1it is a world federation which is composed of various associations 2once you know where the gaps are 3this makes it the logical choice for any organization that does business internationally or that serves customers who demand an international standard of quality .求这几个句子的结构,以及是什么从句,

提问时间：2021-11-21

答案

1,句子的骨干是“主系表”结构.
主语：It
系动词：is
表语：a world federation
定语从句：which is composed of various associations ,修饰federation .
2,句子不完整,只有条件状语从句Once you know where the gaps are,这个条件状语从句中又有宾语从句where the gaps are,做know的宾语.但句子没有主句.
3,句子的骨干是个“主语+宾语+宾补”的结构.
主语：This
谓语：makes
宾语：it
宾补：the logical choice
定语从句：that does business internationally or that serves customers,修饰organization ,这个定语从句当中又有定语从句who demand an international standard of quality ,修饰customers.