关于英语分词做后置定语和betodo结构的疑问
Tobeginwith,thepurposeofthedrawingsistoshowusthattheflowergrowinginthegreenhousecannotwithstandthetestofthestorm,yetthesymbolicmeaningssubtlyconveyedshouldbetakenmoreseriously
1,thesymbolicmeaningssubtlyconveyedshouldbetakenmoreseriously
这句conveyed的用法对吗?我觉得应该少一个起主语作用的词吧代语或者其它什么
2,thepurposeofthedrawingsistoshowusthat...
这里面betodo是一种什么结构吗?