how to use bridge edge loops

could someone show me?

thanks

Not when you can answer your own question with a google search “blender bridge edge loops”

And you’re using one sentence with four words to post a support question. It’s not in the context of troubleshooting, showing you’ve actually tried, and that the issue is important enough to you. If it were, you’d use images to explain the issue and prepare+upload an example .blend to help others answer you.

sure I’ll google first, I just tried youtube

http://www.google.co.nz/search?q=get+that+grunge+off+your+face&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiX8u2ForrWAhXFVbwKHXumAg0Q_AUICigB&biw=1280&bih=894#imgrc=ATv1vPQeLT8spM:

W, then down near the bottom, “bridge edge loops”

It also helps if you’re in edge select mode [ctrl+tab].

This will for example not work because the edge at the top is selected because the mode is in vertex select mode.

This will work because the edge at the top is not selected: