Before tense, the verb “do” changes to “did” for all subjects. On the other hand, “does” remains unchanged from the 3rd-person singular existing tense. Here are several illustrations: “Do” can be a helpful and flexible verb, but it really has its limitations—stay away from using it with modal verbs https://riverpriwf.collectblogs.com/82444876/5-essential-elements-for-does-proleviate-help-with-shoulder-pain