i got to the office early that day,____ the 7:30 train为什么用having caught而不是to catch
问题描述:
i got to the office early that day,____ the 7:30 train
为什么用having caught而不是to catch
答
做非谓语时to do 为了(表目的,有将要的意思)
而这句句子是过去时态,是表结果,所以用having caught