Future perfect

Futur II

The future tense Futur II is used to express actions that will be already done in the future.

Building sentences in the Futur II tense

Subjekt + werden + ... + Partizip II + haben/sein

The subject (Subjekt) is the person or thing performing the action, followed by the auxiliary verb werden (in present tense, conjugated for person), and then at the end of the sentence, the past participle (Partizip II) with one of the auxiliary verbs (haben/sein).

Conjugation of the auxiliary verb werden for person in the present tense

Person	werden
ich	werde
du	wirst
er/sie/es	wird
wir	werden
ihr	werdet
sie/Sie	werden

Examples of using the Futur II tense

Um Neun Uhr wird der Flugzeug bestimmt abgeflogen sein.

Translation
By nine the plane will have departed / flown away.

Explanation
At nine the plane will have been gone for sure (because it will have flown away earlier).

Bis morgen werden sie eine Entscheidung getroffen haben.

Translation
By tomorrow they will have made a decision.

Wenn wir nicht sofort operieren, wird der Patient morgen sicherlich nicht mehr haben laufen können.

Translation
If we don't start to operate immediately, the patient will not have been able to walk tomorrow.

Explanation
If there is a modal verb in a sentence then 3 infinitives are placed at the end of the sentence: an infinitive of the auxiliary verb haben, an infinitive of the verb (in this example laufen), and an infinitive of the modal verb (in this example können). It is a very rare construction.