"I remember when I started to cover this subject."
Translation:Eu me lembro de quando comecei a cobrir este assunto.
I just commented on the other exercise that gives the exact opposite: eu lembro quando.... They marked it wrong a few minutes ago as a response to translating from this English phrase, so i jumped through the hoop and spit back what was wanted this time.
Get it together duolingo!
Depending on what you mean, you use começar + a + verb.
- Começo a trabalhar semana que vem (I start working next week).
Sometimes, when you state your routine, describe steps, you can also use começar + gerund.
- Comece se exercitando.... (Start exercising...).
Começar + noun — começo meu livro esta semana (I start my book this week)