１。 Viて[来る／行く] – it indicates “from point A to point B” in relation to main verb. For example “The dog is running this way” (from point A (it indicates he was already somewhere in the park) – to point B (towards me))
２。Vtて[来る／行く／帰る] – those are not the verbs of movement, but rather concrete verbs (Transitive and Intransitive). There is a difference in time between 2 actions. The action is bringing something with itself. It is done with the goal of going somewhere or with the goal to come back from somewhere (there is a specific reason why are you going/coming back). For example “I came back for something (that I forgot)” or “I’m going to the city center to do something (to finish some business)”.
Beside this explanation I got, I still want to fundamentally understand this grammar. Because I imagine in my exam a question like this:
Something ________ (verb in dictionary form)て_____________（来る）。
How do I know which verb (T or I) should I choose?
by Rosaria_supremacy1