Present perfect and Present perfect continuous

have been working

have worked

worked

has been working

has been waiting

waiting

has waited

have, been doing

has, been do

have, done

has been standing

have been standing

have stood

has stood

has, finished

have, finished

have been finishing

has been finishing

haven’t bought

hasn't bought

haven't been buying

hasn't been buying

hasn’t been

hasn't be

hasn't was

has find

has found

has been finding

have found

has been learning

have learned

have been learned

have been learning

Has, been helping

Have, been helping

Have, been help

Has, been helped