Question

定语从句I saw a desk on which there is a book on which在句中做什么成分（状

Answer 1

on which在句子中做状语,相当于where,在定语从句中,a book做主语,is做谓语,there做宾语,注意:there be句型本身就是一个全倒装句式,因此there在句中做宾语.