题目

这个句子的完成时可以改成过去式么?
1、He refused to go until he had seen（saw） all the papers.
2、After the will had been（was） read,there were angry exclaimations.
3、Before I had known（knew可以么?） him for a week,he tried to borrow money from me.
4、My friend explained that the house had been (was可以么)originally built as a monastery but had been（was可以么） converted into a manor when monasteries were dissloved under Henry.

提问时间：2021-03-31

答案

这些句子的过去完成时都不能改.
因为使用过去完成时是有条件的：在句中必须有对照的时间.四句话,都有对应的时间,不能改为过去时.
另一方面,如3句,使用过去完成时是要强调,在我熟识他之前,他要管我借钱.特意强调先后顺序,有一定的写作意图,这是不能更换成过去时的.又如4句,使用过去完成时,是表示客观事实,房子的建成在之前,改为过去时不合适.