Hi, everyone

I am a chinese native speaker. I began to learn english when i was a kid, i mastered it very well. But since i am in France for my study, french is better than english. When i want to speak english for now, there are always french vocabularies in my head. French and english are not my native language.  I don't want to give up english which i had studied for many years. Do you know how to study two languages at the same time ? Some methods ? Or opinions ? 

Thanks so much !