Prior to now tense, the verb “do” variations to “did” for all subjects. However, “does” stays unchanged in the third-human being singular current tense. Below are a few illustrations: These helping verbs enable to the indication of actions or states of being without the repetition of the leading verb. https://getsocialselling.com/story5897468/the-2-minute-rule-for-does-proleviate-help-with-shoulder-pain