German perfect tense
The German perfect tense implies that a present tense verb is describing a past event, such as "I have played with my little brother". Usually you will need to conjugate the helping verb haben (to have) when using the perfect tense and also add the prefix ge- to the conjugated verb.
Although the majority of present perfect German verbs use haben, some verbs use sein (to be) instead to form the present perfect tense. These verbs are for example: gehen (to go), kommen (to come) and werden (to become).