Last year a journalist had been instructed by a well-known magazine to write an article on the president's palace in a n

问题描述:

Last year a journalist had been instructed by a well-known magazine to write an article on the president's palace in a new African republic.这里为什么要用过去完成时?

Last year a journalist had been instructed ...和 Last year a journalist was instructed ...意思不一样.前者是说该记者已经被派去...,后者是说被派去.