Breakdown of Utbildningen är frivillig, så du behöver inte delta.
vara
to be
du
you (singular)
inte
not
behöva
to need
Questions & Answers about Utbildningen är frivillig, så du behöver inte delta.
Why is there no att before delta?
When behöver is used with inte to express a lack of necessity, it acts like a modal verb. This means it is followed directly by the bare infinitive without att. Therefore, behöver inte delta simply means you do not need to participate.
Could I use du får inte delta instead of du behöver inte delta in this context?
Why doesn't the adjective frivillig end with a -t here?
The adjective must agree with the noun it describes. The word for training is en utbildning, which is an en-word. Because of this, the adjective stays in its base form frivillig. If it were describing an ett-word, it would be written as frivilligt.
Could I use the phrase vara med instead of delta?