Cast

JumanahWild deer come to drink the sweet water and rest in the shadows cast on the grassy banks of the river.Can you please explain the the meaning of "cast" in this sentence?And can "cast" be formed "casted"?

See definition 6 here

You cannot use 'cas

"cast" has sense 2 at http://www.oxforddictionaries.com/us/definition/american_english/cast :

Cause (light or shadow) to appear on a surface

"the shadows cast" is reduced from "the shadows that are cast", where "cast" is the past participle. "cast" is an irre

Rest in shadows appeared on the grassy banks of the river.
Does it make sense?

JumanahRest in shadows appeared on the grassy banks of the river.Does it make sense?

No. Shadows can be "cast", but they cannot be "appeared". "appear" is an intransitive verb.

I mean does "cast" have the same meaning as "appear"
In the sentence I wrote?

Ahhhhaa. Okay. I got it.
Thank you so much.

Wild deer come to drink the sweet water and rest in the shadows cast by trees on the grassy banks of the river. As the bend their heads down to drink, their reflections appear in the quiet water.
When the sun comes out from behind thick rain clouds, their shadows appear on the steep, bare river bank.