What are modal verbs?
The six German modal verbs are: duerfen, koennen, moegen, muessen, sollen and wollen.
They are a few irregularities with their conjugations but common trends can be spotted;
In the imperfect, they follow -te, test, te, ten, tet, ten, ten.
As they are auxiliary verbs, they will be used with another verb:
Ich moechte eine Tasse Kaffee trinken.
