cough -> кашлять
Образование времен (Действует субъект! - Актив т.е. действительный залог):
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Simple - Факт
I/he/she/it/we/you/they
coughed
did cough
----
did not cough
did'nt cough
I/we/you/theyhe/she/it
coughcoughs
do coughdoes cough
----
do not coughdoes not cough
do'nt coughdoes'nt cough
I/he/she/it/we/you/they
will cough
 
----
will not cough
won't cough
Continous - процесс
I/he/she/itwe/you/they
was coughingwere coughing
----
was not coughingwere not coughing
Ihe/she/itwe/you/they
am coughingis coughingare coughing
----
am not coughingis not coughingare not coughing
 is'nt coughingare'nt coughing
I/he/she/it/we/you/they
will be cough
----
will not be cough
won't cough
Perfect - Завершенность
I/he/she/it/we/you/they
had coughed
----
had not coughed
had'nt coughed
I/we/you/theyhe/she/it
have coughedhas coughed
----
have not coughedhas not coughed
haven't coughedhasn't coughed
I/he/she/it/we/you/they
will be coughed
----
will not be coughed
won't be coughed
Perfect Continous - Процесс в периоде
I/he/she/it/we/you/they
had been coughing
I/we/you/theyhe/she/it
have been coughinghas been coughing
I/he/she/it/we/you/they
will have been coughing
cough -> кашлять