In the past tense, the verb “do” variations to “did” for all topics. Conversely, “does” remains unchanged from the 3rd-person singular current tense. Here are several illustrations: Conversely, dose refers into a measured quantity of medicine or compound taken at one particular time or perhaps the administration thereof. From https://digibookmarks.com/story20383125/detailed-notes-on-does-proleviate-help-with-shoulder-pain