"Present continuous for active passive voice" (progressive)

Present continuous

Active voice	Passive voice
"is/am/are + 1st form+ ing(present participle)"	"is/am/are+ being+3rd form (past-participle)"
" I am writing a letter." "I=subject am=(hv) writing=verb a letter=object"	"a letter is being written by me."
"He is writing letters."	"letters are being written by him."
"He is teasing me."	"I am being teased by him"