A "Wir sehen gerne fern. " mondatban miért kap a gern 'e' végződést?

[link]

Ebben a mondatban a gern(e) határozószó. Lehet tehát gern is. (pl. Wir sehen gern fern.)

"The original form from Old High German down through Middle High German, as Duden and others indicate, was "gerne". The form "gern" is just an example of how often the final "-e" gets dropped from German words in casual usage, and some people may consider it a little more colloquial.

The usage between the two is more of a feeling or the way it sounds in the sentence or circumstance rather than a grammatical requirement. Perhaps you want to say "gerne" to really emphasize something, or perhaps just "gern" with a sense of finality. As you become more familiar with German, you will get a better feel for its rhythm and rhyme and what sounds better to your ears. The choice is yours."