Question

分析句子成分（简短的一个句子）Last sunday they reached Nanjing,where a conf

Answer 1

Last sunday they reached Nanjing,where a conference was to be held.

Last sunday是时间状语.

they是主语.

reached是谓语.

Nanjing是宾语.

where a conference was to be held是修饰Nanjing的定语从句(非限定性).