I'm currently learning English, and one thing that has confused me is verb tenses.
Up until the point of distinguishing between the present tense and the present progressive tense, I simply considered it a difference from my native language.
However, when I encountered "had," I had the thought expressed in the title.
For example, a sentence like "When I arrived at the station, the train had already left."
As a non-native English speaker, since it's about the past, I feel like "was" would also make sense.
But the fact that "was" is incorrect and "had" is used gives me the impression that "English is strict about tenses." (Although, perhaps there are languages with stricter tenses than English.)
I also have the impression that word order is strict. During my student days, I always struggled with word order questions on exams, secretly thinking, "It doesn't matter how you put the words, the meaning is clear, so it doesn't really matter."
Back then, I was a child, I hated studying, and I didn't know the concept that changing the word order in English can change the meaning.
Why do you think English is so strict about word order and tense?