"When are you going?"
Translation:Wanneer gaan jullie?
Did you read the grammar explanation?
The second person singular receives the suffix -t, added to the stem. However, if the personal pronoun comes after the conjugated verb, inversion occurs and this suffix is dropped.
> Example: “Loop jij vandaag niet?” = “Are you not walking today?”
When the second-person jij-form is followed immediately by the subject pronoun itself (jij or je), it loses its -t: Jij werkt → Werk jij? ("You work" → "Do you work?"). The -t is present in all other cases.
So the form for ik is the verb without the -en part (this we call 'de stam') [...] You take this form and add a t for the second and third person singular, but you take it off again when the subject jij or je comes after the verb instead of before.