The words do, does and did often cause confusion in the English language. They are all forms of the verb to do.
It is also common to use do, does and did as auxiliary verbs (or helping verbs) together with another verb in its base form. This is used to create negative sentences, questions, or for adding emphasis.
Examples ::
* Russel did a great job on his debut match for team.
* Did you catch the train this morning?
* When did they arrive home?
