I'm sorry, but I don't understand your question. The pronoun "one" has nothing to do with the verb tense.
Your example does not use the past tense.
Can I use "one" for past tense in writing a technical paper such as engineering lab.
Ex. So one can see the rocks form.
5 answers
I am sorry its about third person
Yes, "one" is a third person pronoun.
Thank you!
You're welcome.