"I used to play with my friends." or "I used to go out and play with my friends. no difference really

Santiago: My books tell me that "used + infinitive" is another way to say "would." Thus: 1. I would go out and would play with my friends. 2. I would go out and play with my friends. I think that #2 is more idiomatic (that is, it sounds more natural to native speakers). I think, however, that #1 is NOT wrong. ***** Therefore, in my opinion: 3. I used TO GO OUT and TO PLAY with my friends. 4. I used TO GO OUT and PLAY with my friends. I feel that #4 is, indeed, more idiomatic. But I feel that #3 is NOT wrong. I think that you would usually repeat the "to" only if you wanted to EMPHASIZE the second infinitive. For example: I have completely forgotten my French. But I used TO SPEAK it and even TO READ it!

You don't repeat the "to", so "I used to go out and to play with my friends" is correct. Another example, to show you that it's not only "used to" that follows this rule: "I want to sing, dance and jump around in the rain."

used to = verbo + ia/aba I used to go out = salía - "I used to go out and to play with my friends." is NOT correct. you cannot repeat the "to" before play. - "I used to go out and play with my friends." is correct. You could also say "I used to go out to play with my friends." That would be fine.