Use-case
They are verbs are that indicate modality i.e. likelihood, permission, ability, obligation etc.
Example
Ich möchte Arzt werden.
- möchte Modalverb
- werden Hauptverb
Note
- The Modalverb takes the conjugation and leaves the Hauptverb to be an infinitive.
- The conjugation for “er/sie/es” is same as the “Ich”
- eg: Er möchtet Arzt werden.