French is as familiar to him as English. How to divide the English components of this sentence

Hello.

French is a human noun and serves as the subject. As the predicate of the whole sentence, is is a linking verb. The as...as structure after is is "like..." "like...", and all the parts after is are used as whole sentence expressions. In the slogan component, to him is used as the preposition phrase, as conjunction is followed by English, which means "like what (English)".