Here are two examples:

By the time I got to the station, the train had left.


The train left five minutes before I got to the station.

I don't understand why past simple is used in the second sentence. The train had left before they got to the station, so I would think past perfect suits better.

  • It's because the first sentence relates to the moment you got to the station, by which time the train had already left, whereas the second sentence relates to the moment when the train left, when you had not yet got to the station.
    – user96060
    May 28, 2019 at 9:57

1 Answer 1


There is a grey area in the choice of tenses between PAST SIMPLE and PAST PERFECT.

In many situations, both are idiomatic. Speakers and writers seldom pause to consider which tense might be more suitable in any given context, they simply speak or write.

In your first example, it's more natural (after the expression by the time) to use the PAST PERFECT:

By the time I got to the station, the train had left.

In your second example, this isn't true.

Most native English speakers would use It left five minutes before.... It's simply a natural way of speaking.

It would also be correct to say had left five minutes before.... and some people might use this tense to emphasise a point. But this does not improve the sentence or make it any clearer.

In short, both constructions are fine - as is frequently the case.

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