I used to
B1used to + base verbA past habit or state that's no longer true — something that once was, but isn't anymore.
- I used to smoke, but I quit.PLKiedyś paliłem, ale rzuciłem.
- There used to be a cinema here.PLKiedyś było tu kino.
- Did you use to play sports?PLCzy kiedyś uprawiałeś sport?
I used to playing tennis.I used to play tennis.
After „used to” comes the base verb (play), not the -ing form. The -ing belongs to „be used to” — a different construction.
