Jefferson died long ago,but may of his ideas still of great

楼主之所以会误解主要是受long的干扰,
我们先不妨看个简单的例句：
I came here two weeks ago.
我们很容易理解这句话就是“我两周前来这的”
那么,这里的died long ago句型就是和came two weeks ago一样的.今后碰到这样的,我们不管前面就先把...ago先翻译出来,然后加上前面的就好翻译了.long ago（很久以前）+Jefferson died （杰斐逊死了）＝杰斐逊很久以前就死了