Yo escribí= I wrote ------------>Past tense ----->Escribi esta en el pasado simple yo escribía = I was writing --------> Past continuous ----> escribia esta en el pasado continuo en ingles escribi I wrote you wrote He/ she Wrote you wrote we Wrote They wrote Yo escribia - I was writing I was writing you were writing he/ she was writing we were writing they were writing ojala que te pude ayudar en algo.

It is not very precise, and I may not understand the distinction in Spanish perfectly. But, I think, "yo escribí" could be translated as "I wrote," and "yo escribía" could be translated as "I used to write" or "I always used to write." For example, "I used to write a column every month in my high school newspaper. In April of 1961 I wrote a column about palindromes (sentences that read the same way forwards and backwards)." However, we often use the form "I wrote" for escribí as well as escribía. The difference in meaning is conveyed by the rest of the sentence. I could say "I wrote a column every week in my high school newspaper." The phrase "every week" makes it clear that this was a continuing activity, repeated over a long period of time.

En ingles, escribí = I wrote y escribía = I was writing (o a veces, I used to write). Las diferencias de significación son la misma como en español.