Please work through the following presentations to review the Perfect Tense. 

Perfect Tense 1

Perfect Tense 2

Common Irregular Verbs

Finn sucht seinen Namen auf dem Päckchen.
Der Paketdienst hat es einem Nachbarn gegeben.
Finn gibt dem Studenten sein Buch.

You’ve seen those –n or –en endings numerous times already in German texts. If you ever wondered why they are there, here is the answer: Those nouns belong to a group of masculine nouns that take the ending –n or –en in all cases except the nominative singular (hence the name masculine n-nouns).

N-nouns are a group of masculine nouns that take the ending –n or –en in all cases except the nominative singular. Look at the word “der Student” as an example:

Here are some other common n-nouns:

der Kunde, -n            der Mensch, -en

der Herr, -n                der Athlet, -en

der Name, -n             der Patient, -en

der Junge, -n             der Polizist, -en

der Kollege, -n           der Präsident, -en

der Nachbar, -n          der Tourist, -en

*Achtung* Remember that in the dative plural, all nouns add -n to the plural ending, unless the plural already ends in –n (and except for a few nouns whose plural ends in –s).