I've known that when we write in Reported Speech and if the reporting verb is past tense, we must change the tense. But is it true for universal truth and habitual action? For example
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She said, "When do the banks close?"
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He said to me, "What does this word mean?"
In those cases, should we change the present tense to past? I mean, in our country, the banks close at 3:00 pm. Isn't it a habitual action?
Best Answer
According to the British Council:
Note the word necessary. In many contexts, it is still permissible to backshift the tense, even if something is still true now.
The first version (with a backshift) is definitely the best choice if we are talking about a conversation that took place many years ago, as bank closing times may have changed since then. The second version is better if you are talking about a conversation that took place last week, but you could also use the first version.
It is very unlikely that the word has changed its meaning since the conversation took place, so either version is acceptable. I think that I would go for the first version (with a backshift), though I cannot explain my preference in any way.
Note that, unless you want to specify when you learnt about something "I have known about it for some time", you generally use know in the present tense: "I know that..."