Fronting correct use?
I have this phrase (created myself) > He was entering into the office slowly / Slowly, he was entering into the office. (there shouldn't be difference I suppose) Now, the rules say that if I have an adverbial phrase of place or movement, it should be placed at the beginning when fronting. - My question is: Having both an adverbial phrase of place and an adverb, may I say > *Slowly, into the office was he entering* OR >*Into the office, slowly, was he entering* - One more question: is fronting (like negative inversion) and the abovementioned "case" used in speech? If yes, is it used only in formal speech?