Install JAWS with the English option.
You will still be able to red passages in other languages if:
1. An appropriate synthesizer for that language is installed.
2. The passage is appropriately marked up so that JAWS can recognize the language changes.
3. You have auto-detect languages option enabled in JAWS.
One slight disadvantage would be that JAWS information about Heading levels and lists will still be in the English language.