Opens is neither future tense nor past tense. It's present tense.
The future perfect tense uses the past participle of a verb.
The word "past" doesn't have a future tense as it's not a verb.
The past tense of "does" is "did," and the future tense is "will do."
The verb 'will' is the future tense.
The past tense of speak is spoke, and the future tense is will speak.
Past - there is nothing like that to use grammatically, but the natural replacement is 'Was'. Future - will be.
Do is present tense and future tense. "I will do it." "She will do it." "You will do it." And did is the past tense. "I did it." "He did it." "We all did it."
Present Tense: I am alive. Past Tense: I was alive. Future Tense: I will be alive. "alive" is not a verb, it is an adjective, so the past/present/future tense is for the verb usually associated it.
The word "more" is not a verb and does not have a past, present, or future tense.
"Enlarges" is a present tense verb. "Enlarged" would be the past tense, and "will enlarge" would be the future tense.
The word 'went' is the past tense of the verb to go.The future tense of the verb to go is will go.
The past tense of "plan" is "planned." The future tense of "plan" is "will plan."