The fact that this is not an uncommon occurrence means that dishonest persons might be able to access bank accounts in electronic payments systems and steal from someone else’s accounts.( 2013英语二 完型 )
【主干】
①主句The fact means that dishonest persons might be able to access bank accounts in electronic payments systems and steal from someone else’s accounts.
②同位语从句that this is not an uncommon occurrence
【主句】
The fact means that dishonest persons might be able to access bank accounts in electronic payments systems and steal from someone else’s accounts.
主干：主语the fact，谓语means，宾语从句 that… accounts.
→宾语从句内部分析
引导词：that，不作成分
主干：主语 dishonest persons，谓语1 might be able to access，并列谓语2 (might be able to) steal，宾语1 bank accounts
修饰：地点状语1(修饰access)in electronic payments systems;状语2(修饰steal)from someone else’s accounts
【同位语从句】(修饰主干主语the fact)
that this is not an uncommon occurrence
引导词：that，不作成分
①主干：主语this，系动词is not，表语an occurrence
②修饰：前置定语(修饰occurrence)uncommon
