Where I want to use do, does and did?

In simple present tense, 'Do' will function as an auxiliary to express the negative and to ask questions. 'Does', however, is substituted for third-person, singular subjects in the present tense. The past tense 'Did' works with all persons, singular and plural. Do example:- ☆ Do you study in this school? Does example:- ☆ Does he work here? Did example:- ☆ Did your grandmother know that I broke her spectacles when I came to her house?