Semi-auxiliary verbs
One of 95 rules YabLab tracks in English writing.
When I was young, I would walk to school.
When I was young, I used to walk to school.
What YabLab does with this mistake
- Catches it right as you write — comments, email, docs.
- Explains the why in your language, not just the fix.
- Helps you practice it until it is gone for good.