题目
请大虾们帮忙分析下面句子的语法结构,TKS
Vitamin D was mainly rely on two channels, one is to obtain from food, and the other one is on the adoption of solar ultraviolet radiation in human skin synthesis of vitamin D3
Vitamin D was mainly rely on two channels, one is to obtain from food, and the other one is on the adoption of solar ultraviolet radiation in human skin synthesis of vitamin D3
提问时间：2021-03-08
答案
S＋V＋O＋OC.（主语＋动词＋宾语＋宾语补足语）
主语：Vitamin D
系动词：was rely on
宾语：two channels
宾语补足语：one is...Vitamin D3
主语：Vitamin D
系动词：was rely on
宾语：two channels
宾语补足语：one is...Vitamin D3
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