大家帮我分析一下这句句子的结构FiveinternationalorganizationshavecombinedeffortstoseektheanswerstotheproblemsoftheunfortunatedescendantsofPeru,BoliviaandEcuadoronwhattheycalltheAndeanMission.Peru,BoliviaandE

Question

大家帮我分析一下这句句子的结构
Five international organizations have combined efforts to seek the answers to the problems of the unfortunate descendants of Peru,Bolivia and Ecuador on what they call the Andean Mission.
Peru,Bolivia and Ecuador 是三个国家的名字

Answer 1

Five international organizations 是主语；
这个主语have combined efforts；
这个行为的目的是 to seek the answers
这个answers 后面加to 是固定搭配,用来修饰这个名词；
the answers to the problems 是修饰成分,后面的是修饰 problems 的定语（of the unfortunate descendants of Peru,Bolivia and Ecuador）
后面的ON是the problems of on 是固定搭配.然后用了一个宾语从句what they call the Andean Mission.
仔细看看,并不是那么复杂.