u/barsilinga

So, in my Yivo course we are dealing with Dative constructions like:
מיר איז װאַרעם.
I'm more confused when געפֿעלן is used or when the sentences are more complex like these from Sheva Zucker's book:

די חלות זײַנען אונדז דאָס מאָל געראָטן.

חיימען געפֿעלן נישט די באַדינגונגען.

I could really benefit from another text with more examples and explanations.

Any thoughts?
THANKS in advance.