1、Is it something that people believe?No. A fact is anything that can be proved.,定语从句; something为不定代词， 关系代词只用that。,It can be proved that China has more people than any other country in the world.,it 作形式主语； 真正的主语从句 that只起连接的作用。,An opinion is what someone believes is true but has not been proved.,表语从句；
2、what作从句的主语,Some people may not agree with this opinion but they also cannot prove that they are right.,宾语从句； that 不作成分，只起引导作用。,In a trial, a judge must decide which eyewitnesses to believe and which not to believe.,疑问词+to do,decide to believe which eyewitnesses decide not to believe which eyewitness
3、es,The judge does not consider what each eyewitness looks likeor where that person lives or works.,宾语从句； Where作从句的地点状语。,宾语从句； what作从句的宾语。,He/she only cares about whether the eyewitness has given true information, which must be facts rather than opinions.,定语从句； which指代information；作主语,宾语从句； Whether 只起引导作用，“是否”,
