Questions & Answers about Θέλεις να έρθεις μαζί μου με το τρένο αύριο;
In Modern Greek, after many verbs (especially verbs of wanting, needing, being able, etc.), you typically use να + (subjunctive) to introduce the next verb:
- Θέλω/Θέλεις/Θέλει + να + verb = I/you/he/she want(s) to + verb
So Θέλεις να έρθεις…; is the normal way to say Do you want to come…?
You generally can’t put two verbs together without να in this structure.
να έρθεις is the aorist subjunctive of έρχομαι (to come) and it usually refers to a single, complete event: coming (once) tomorrow.
να έρχεσαι is present subjunctive and tends to mean something more ongoing/repeated/habitual, like to be coming regularly or to come (as a general behavior), depending on context.
For a one-time trip tomorrow, να έρθεις is the natural choice.