None of the attempts( to specify the causes of crime )explains [why most of the people (exposed to the alleged causes )do
主语 谓语
not commit crimes and (, conversely,)why so many of those (not so exposed) do].
宾语从句
圆括号里的都是修饰语或插入语。
-- by 会员 irenechl (2011/7/18 22:27:51)