When do I use doi instead of doua?
when the noun is masculine. doi is masculine and doua is feminine.
So why "două mere" is right, if "un măr" is right?
How do we type the accented characters on a macintosh keyboard?
You can go to System preferences > Keyboard > Input Sources > Add Romanian Keyboard.
Duolingo also provides those special letters under the input box.
Doi was never introduced.
Groovy! I could make a song out of this...