一个史上巨难解释的英语句子----不是高手勿进ThissituationchangedwhenIreceivedanemailfromMsGriffith,mycluster（agroupofdorms）dean（主任）,sayingthatanewfemaleDCRepwasneeded.DCRepstandsforDisciplineCom

　　一个史上巨难解释的英语句子----不是高手勿进

　　ThissituationchangedwhenIreceivedanemailfromMsGriffith,mycluster（agroupofdorms）dean（主任）,sayingthatanewfemaleDCRepwasneeded.DCRepstandsforDisciplineCommitteeRepresentative.Sometimesboardingschoolstudentsbreakseriousrules,likeusingdrugs,gettingdrunkorcheatingintheirstudies.ThepunishmentsgiventosuchstudentsaredeterminedbyaDCRep,ahousecounselor,twostudentrepresentatives（代表）,theclusterpresidentandtheclusterdean.【IwasreallyinterestedinbecomingDCRepformycluster,PineKnoll,butsowerefiveotherstudents.】WehadtoholdanelectionandMsGriffithaskedustowritespeechestobesenttoeveryoneinPineKnoll.

　　1、IwasreallyinterestedinbecomingDCRepformycluster,PineKnoll,butsowerefiveotherstudents.1、分析这个句子的结构

　　2、Pine

　　3、请解释【】里的一个句子,里面的so总觉得多余.