This & That, Ceci et Cela

After finishing the course, it has just occurred to me that the best way for me to learn French/any foreign language is to take lessons in that language simultaneously with English language classes. Why? The Anglais class refreshes grammar rules while supporting acquisition of the new language which is based on a similar grammatical structure. E.g. it is easier to learn adverbs en Fran?ais when you are solidly aware of their definitions/uses in English.