learn -> учиться
Образование времен (Действует субъект! - Актив т.е. действительный залог):
  Past - ПрошлоеPresent - НастоящееFuture - Будущее
Simple - Факт
I/he/she/it/we/you/they
learned
did learn
----
did not learn
didn't learn
I/we/you/theyhe/she/it
learnlearns
do learndoes learn
----
do not learndoes not learn
don't learndoesn't learn
I/he/she/it/we/you/they
will learn
 
----
will not learn
won't learn
Continous - процесс
I/he/she/itwe/you/they
was learningwere learning
----
was not learningwere not learning
Ihe/she/itwe/you/they
am learningis learningare learning
----
am not learningis not learningare not learning
  isn't learningaren't learning
I/he/she/it/we/you/they
will be learn
----
will not be learn
won't be learn
Perfect - Завершенность
I/he/she/it/we/you/they
had learned
----
had not learned
hadn't learned
I/we/you/theyhe/she/it
have learnedhas learned
----
have not learnedhas not learned
haven't learnedhasn't learned
I/he/she/it/we/you/they
will be learned
----
will not be learned
won't be learned
Perfect Continous - Процесс в периоде
I/he/she/it/we/you/they
had been learning
I/we/you/theyhe/she/it
have been learninghas been learning
I/he/she/it/we/you/they
will have been learning
learn -> учиться