present simple _____________________ past simple
present continuous____________________past continuous
present perfect continuous ___________________past perfect continuous
present perfect simple______________________past perfect simple
past simple _____________________________ past perfect
past continuous _______________________past perfect continuous
past perfect ________________________past perfect
past perfect continuous ____________________past perfect continuous (no change
will____________________________would
can ____________________________could
must ____________________________had to
shall__________________________________should
may______________________________might
expressions of time if reported on a different day
this _____________ that
today _________________ yesterday
these_______________________those
now_________________________then
here__________________________there
next ____________________ the following
tomorrow_____________________ the next_following day
Direct speech & indirect speech