A baby (mag-) becomes one year old; someone reaches the age of something or someone ages by another year.
Magtawen danaw anak kwaya.
My child reaches the age of one year.
Magtawen si āmang so wawaho a poho.
Father reaches the age of eighty.
Magtawen dana si āmang an delak.
Father ages by another year tomorrow.
kapagtawen
The age reached by someone.
past nakapagtawen
Do nakapagtawen ni āmang so dadwa poho, myan pōtot na.
When father reached the age of twenty, he had a child.
tinawen
Yearly.