有关英语语法的知识 请高手帮下忙

有关英语语法的知识 请高手帮下忙1>Most of this comes from federal loans,which Congress made more tempting in 1992 by expanding eligibility(...)and raising loan limits(...).形式是this comes from loans,which...and ...(which后面是进一步解释loans的).所以可以看成A comes from B,which b1 and b2.如果想表达一种句式是A comes from B,which b and C 应该怎么说啊(不一定要这个句子)2>It's more modern than traditional,more sophisticated than simple that...more than在排比句里 是不是这种用法(comma后面要不要加more)?如果变成nothing more...than 用在排比句里,因该怎么用啊?还有一个It goes without saying that we cannot be young forever.和A proverb says,"You are only young once "意思是不是正好相反的 转述的关系?