The past participle, which is needed to form the present perfect tense, usually begins with ge-. With separable verbs, -ge- comes between the prefix and the verb root.
Regular verbs:
| Infinitive | Past participle |
| aufräumen | auf-ge-räum-t |
| einkaufen | ein-ge-kauf-t |
Irregular verbs:
| Infinitive | Past participle |
| fernsehen | fern-ge-seh-en |
| mitschreiben | mit-ge-schrieb-en |