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。