Aturefriendissomeonewithwhomwecanshareourlife.其中的"withwhom"做什么成分呢?! 　　Aturefriend主语 　　issomeone系表结构,做复合谓语 　　withwhomwecanshareourlife.定语从句 　　Aturefriendissomeonewithwhomwecanshareourlife.=Aturefriendissomeonewhomwecanshareourlifewith.=Aturefriendissomeone.wecanshareourlifewithhim.

　　with引导的从句不是宾语从句吗？

　　with是介词，不能引导的宾语从句。whom是关系代词，引导定语从句，whom在定语从句中做介词with的宾语，因为whom做介词with的宾语，此句把介词with放在了关系代词whom的前面。