Tense অনুযায়ী Auxiliary verb ব্যবহার করার নিয়ম
Present Indefinite: am / is / are
Past Indefinite: was / were
Future Indefinite: shall be / will be
Present continuous: is being/ am being / are being
Past continuous: was being / were being
Future continuous: shall be being/ will be being
Present perfect: have been / has been
Past perfect: had been
Future perfect: shall have been/ will have been
