On Mar 6, 2019, at 07:59, mayqel qunen'oS <mihkoun@gmail.com> wrote:

Da is defined as "behave as, act in the manner of". Does this mean
that it necessarily needs to take an object ?

I don’t know the answer to your question for sure, but I’m thinking most likely yes, it requires an object.

I think it probably doesn't require an object, but you'd be hard-pressed to find uses for it that don't require an object.

Can we say for instance, {choQaHmeH chay' jIDanIS ?} "in order that
you help me, how do I need to behave ?"

I’d probably avoid saying that by saying something like “chay' jIvangnIS” or “nuq/'Iv vIDanIS” instead.

Definitely these.

-- 
SuStel
http://trimboli.name