The good news, at least for people who don’t speak French: You’ll hear lots of English in France. The bad news: You won’t understand it.
It looks like English. It sounds like English. Some of it really is English. But it doesn’t mean what you’d expect it to mean.
If Anglophones love to pilfer from other languages (pilfer: from the Old French pelfrer), the French like to add their own je ne sais quoi. No, really: without some help, you wouldn’t savoir quoi they’re on about.