Prior to now tense, the verb “do” modifications to “did” for all subjects. Then again, “does” stays unchanged in the 3rd-person singular present tense. Below are a few illustrations: These helping verbs enable to the sign of steps or states of staying without the repetition of the primary verb. https://the-new-pain-killer-conol07161.bloguetechno.com/little-known-facts-about-does-proleviate-help-with-shoulder-pain-73305495