excuse -> извиняться
Образование времен (Действует субъект! - Актив т.е. действительный залог):
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Simple - Факт
I/he/she/it/we/you/they
excused
did excuse
----
did not excuse
did'nt excuse
I/we/you/theyhe/she/it
excuseexcuses
do excusedoes excuse
----
do not excusedoes not excuse
do'nt excusedoes'nt excuse
I/he/she/it/we/you/they
will excuse
 
----
will not excuse
won't excuse
Continous - процесс
I/he/she/itwe/you/they
was excusingwere excusing
----
was not excusingwere not excusing
Ihe/she/itwe/you/they
am excusingis excusingare excusing
----
am not excusingis not excusingare not excusing
 is'nt excusingare'nt excusing
I/he/she/it/we/you/they
will be excuse
----
will not be excuse
won't excuse
Perfect - Завершенность
I/he/she/it/we/you/they
had excused
----
had not excused
had'nt excused
I/we/you/theyhe/she/it
have excusedhas excused
----
have not excusedhas not excused
haven't excusedhasn't excused
I/he/she/it/we/you/they
will be excused
----
will not be excused
won't be excused
Perfect Continous - Процесс в периоде
I/he/she/it/we/you/they
had been excusing
I/we/you/theyhe/she/it
have been excusinghas been excusing
I/he/she/it/we/you/they
will have been excusing
excuse -> извиняться