1.如何识别主语从句？——
2如何识别宾语从句？——
3如何识别表语从句？——只要系动词后面有引导词就是表语从句
eg：A report consistently brought back by visitors to the US is how friendly courteous（彬彬有礼的） and helpful most Americans were to them.
一个有去美国的游客不断带回的报告是大部分美国人对他们多么的友好和客气，乐于助人。
主句谓语——is
主句主语——report
主句表语——that后面的从句
Galieo's greatst glory(荣耀，成功，成就) was that in 1609 he was the frist person to turn the newly invented telescope on the heavens to prove that the planets revolve around the sun rather than around the Earth.
主句谓语——was
主句主语——Galieo's greatst glory
主句表语——that后面的从句——表语也是主系表结构——主：he -谓语——was;-表语——the frist person
定语——to turn the newly invented telescope on the heavens to prove that the planets revolve around the sun rather than around the Earth.
伽利略最伟大的成就是在1609年，他是第一个（翻译定语）的人
定语——用心发明的望远镜观测天空从而证明了行星绕着太阳转的而不是绕着地球转的。。人
Women are much too preoccupied (占领，占据)by family.
Once the marriage begins to disintegrate, they are lost.
That is where their unhappiness spring from and that is why most divorced（离婚）
mothers regard themselves as victims.
女人太专注他们的家庭了，一旦婚姻开始解体，他们就迷失了，这就是他们不幸的来源，这就是为什么大部分妈妈认为他们是牺牲品。
occupied ==占领，占据
be preoccupied by==专注于
spring==动词，起源于，来自于