Breakdown of Ich freue mich, da die Alternative nachhaltig ist.
ich
I
sein
to be
sich freuen
to be happy / to look forward to
der
who, which, that (relative pronoun; die, das)
Questions & Answers about Ich freue mich, da die Alternative nachhaltig ist.
Why does the verb ist come at the very end of the sentence?
Because da (since/because) is a subordinating conjunction. This means it introduces a dependent clause, which forces the conjugated verb (ist) to the very end of that clause.
Could I use weil instead of da here?
Yes, absolutely! Both da and weil give a reason and both send the verb to the end of the sentence. However, da often translates better to "since" and is frequently used when the reason is already known to the listener or when the reason is placed at the beginning of the sentence.
Why is the word mich required here?
The verb for being glad or happy in German is sich freuen, which is a reflexive verb. This means it requires a reflexive pronoun that matches the subject. Because the subject is Ich, you must use mich.
I usually see sich freuen followed by über or auf. Why is there no preposition here?
You use prepositions like über (happy about) or auf (looking forward to) when connecting the verb directly to a noun object. In this sentence, you are explaining the reason using a completely new clause that starts with da. When you follow up with a conjunction instead of a noun, you just drop the preposition.