1,逗号前面没有动词,所以前面肯定不是句子,所以前面的是同位语.你翻译一下,整句话应该这样子：Ely PAPKWER,一个有着法律的训练的印度人,写了历史.
2,sat中的排序题,we used to play 是省略了that 的定语从句,所以原句是 the old soccer ball in a dark coner （that）we used to play with when we were young,你又知道定语从句是就近修饰,所以we used to play 修饰的是coner,而通过句意来看,我们玩的应该是那个皮球,怎么能玩角落呢,所以换换位置,换成了in the dark coner the old soccer ball （that）we used to play with when we were young这样子that之后修饰的就是soccer ball 了.