How do you speak Yiddish?

Answer 1

There would never be any reason to say this, because if someone speaks Hebrew, they'd already know it.

But in any case, here is how you'd say it:

You (masculine) speak a little Hebrew = atah medaber ktsaht ivrit (אתה מדבר קצת עיברית)

You (feminine) speak a little Hebrew = aht medaberet ktsaht ivrit (את מדברת קצת עיברית)

Answer 2

Usually, it depends on whether or not you're brought up listening to it.

Answer 3

to a man: Ata medaber Anglit?

to a woman: At medaberet Anglit?