Up to now tense, the verb “do” changes to “did” for all subjects. However, “does” stays unchanged while in the 3rd-person singular present tense. Here are a few illustrations: These helping verbs enable for that sign of actions or states of becoming without the repetition of the key verb. https://conolidineforanklepainaft63826.thelateblog.com/37666628/does-proleviate-help-with-shoulder-pain-an-overview