Periodically the question comes up on how to display a Google Form in site’s native language. Google Docs supports lots of languages, the trick to get the form to display in the native language is to add the right language parameter to the form URL.
The following form has it’s Google controls (buttons, and other messages) displayed in French. The questions themselves would have to be written in French for them to show up in French as well, Google, to the best of my knowledge, does not provide a translation option. To get the buttons and other content displayed in French I added the &hl=fr parameter to my form URL.
The following shortcode produces the sample form displayed on this page:
[gform form='https://docs.google.com/spreadsheet/viewform?hl=fr&formkey=dE56R1ZldXo4a0N3VTNMNEpSemdGV3c6MQ#gid=0' email='off']