'Do' and 'does' are present tense, and usage depends on the pronoun: I do, you do, we do, they do he does, she does, it does 'Did' is past tense, and doesn't change for different pronouns. :) Also, if you want future tense, you can say 'will do' - but this doesn't change for pronouns, so it's not just 'I/you/we/they will do', but also 'he/she/it will do'.

do,does are used for present tense BUT "do" usage for i,u,we,they =i do,they do ,u do,we do but "does" usage for ..she,he,it =she does ,he does,it does but did used for past tense and usage = i did,u did,she did,he did,it did,they did,we did i hope my answer will help u ^_^