Questions & Answers about Завтра я уговорю друга прийти в парк.
Russian normally does not use the present tense to talk about the future the way English does.
- English: Tomorrow I see him. (present form, but future meaning)
- Russian: you must use a future form:
- Завтра я увижу его.
In the sentence Завтра я уговорю друга прийти в парк, tomorrow clearly refers to the future, so Russian needs a future tense of the verb уговорить. That form is уговорю (simple future of a perfective verb).
Using a present form like уговариваю here would sound wrong if you mean tomorrow; it would suggest something happening now or regularly, not a one-time future result.