Learn German: Bis nächstes Jahr wird sie ihr Lebensziel erreicht haben. - By next year, she will have reached her life goal.

This sentence describes an action that will be completely finished by a specific deadline in the future (bis nächstes Jahr). Just like the English 'will have reached,' the Futur II emphasizes the completion of the action rather than the process.

Why are there two verbs at the end of the sentence?

Futur II is built with three verb parts. The conjugated verb wird takes the second position, while the past participle (erreicht) and the infinitive of the auxiliary verb (haben) are pushed to the very end of the clause.

Could a German speaker say this without using the complex Futur II?

Absolutely. In everyday spoken German, people often replace the Futur II with the normal Perfekt (present perfect) tense, relying on the time marker to show it happens in the future: Bis nächstes Jahr hat sie ihr Lebensziel erreicht.

Why does the adjective in bis nächstes Jahr end in -s?

The preposition bis requires the accusative case. Because Jahr is a neuter noun and there is no article (like das or ein) in front of it, the adjective must take the strong neuter accusative ending -s.

Can I say instead of ?