Im confused about die der and den
It's called noun declension. There's a lot of good information on it on about.com
Why can it not be "Die Ente ist spielen"? Instead it is "Die Ente spielt".
What mekes something feminine?
General rules: http://www.learn-german-smarter.com/learn-german-articles.html
couldnt it be die ente apgespielt???