请问老师:
在Never before has this city been in greater need of modern public transport than it is today中,为什么用现在完成时.
而在Never before did I see such a terrible car accident on the road中却用一般过去式。
它们同样都是Never before开头,都是以前从没有…。我怎么判断什么时候应该用哪种时态呢?
是因为第二句中有on the road才选一般过去式吗?
谢谢!