I don't know if this will help but here is how I have Chrome set up for 2 languages. In Settings at the bottom click Advanced and there is a language option. Add English to that so the browser knows you also read/write English. Then click the button so it will only offer to translate instead of automatically translating. I don't know if that is really necessary but that is how I have it set. When I go to a site in Spanish (my other language) it does not translate and I can type in Spanish with spell checking, etc. In English, the same. If I go to a French site, or any other language that I don't have listed in the Advanced options, it offers to translate.
