Past Future Tense

This tense is used to express the events that will be done, but in the past, not the present.

FORM:

(+) S + would + Verb1

ex: I would go

(-) S + Would + not + Verb1

ex: I wouldn’t go

(?) Would + S + Verb1?

ex: Would you go?

*source: https://afaafahhb.wordpress.com/2013/04/02/16-tenses-in-english-2/