分析一句英语结构

horky

We'll go to the hospital to see the patients,most of which are children.
　　which不是只能代物吗？
　　请大家详细的分析一下这句，谢谢了 。


还有就是　which 改为whom 可以吗？
　which在那作了啥成分？
谁能再把most of ...后面这些讲解一下成分
which在从句中作了身摸成分？

xiao100

which here means
what one or ones out of a GROUP

such as in
which of you want tea and which want lemonade