There is one other way too...my browser is installed in french, but in the settings (I use firefox), I choosed that, would there be a choice of language in the page I'm seeing, it would automaticaly choose english. and thus I see all of them in english (except those that were "forced" into another language.

To do that: Tools - Options - Advanced - Languages- choose.
The down side of this way is that all internationalised sites you'll be browsing will open in english (you'll have to manualy chance their language if you don't want english)