Te Form is the dictionary form of a verb with a modified ending. Note that not all Te Form verbs actually end with “te” – some end with “de”
Any verb that is a Ru Verb is easy to turn into Te Form. All you have to do is remove “ru” and replace it with “te”:
食べる → 食べて (Taberu → Tabete)
Anything that does not end with a “ru” syllable is a U Verb. Different U Verb endings become Te Form in different ways:
(Note: In the case of U Verbs that end with “tsu” or “u,” that final “tsu” or “u” counts as the final syllable, even though in ro-maji it is a different number of letters than the endings of the other verbs).
There are only three common verbs which have an irregular Te Form.
Suru → Shite
Kuru → Kite
Iku → Itte