🔹وقتی می‌خوایم درباره کاری حرف بزنیم که در گذشته مجبور بودیم انجامش بدیم، از had to استفاده می‌کنیم.
Subject + had to + verb

I had to work late yesterday.
دیروز مجبور شدم تا دیر وقت کار کنم.

She had to leave early.
اون مجبور شد زود بره.

حواست باشه بعد از had to، فعل ساده میاد:

❌ I had to worked
✅ I had to work

و برای گفتن «مجبور نبودم»:
didn't have to + verb

I didn't have to work yesterday.
دیروز مجبور نبودم کار کنم.

پس خیلی خلاصه:
had to = مجبور بودم
didn't have to = مجبور نبودم