Negative inversion

In linguistics, negative inversion is one of many types of subject–auxiliary inversion in English. A negation (e.g. not, no, never, nothing, etc.) or a word that implies negation (only, hardly, scarcely) or a phrase containing one of these words precedes the finite auxiliary verb necessitating that the subject and finite verb undergo inversion. Negative inversion is a phenomenon of English syntax. Other Germanic languages have a more general V2 word order, which allows inversion to occur much more often than in English, so they may not acknowledge negative inversion as a specific phenomenon. While negative inversion is a common occurrence in English, a solid understanding of just what elicits the inversion has not yet been established. It is, namely, not entirely clear why certain fronted expressions containing a negation elicit negative inversion, but others do not.

As with subject-auxiliary inversion in general, negative inversion results in a discontinuity and so is a problem for theories of syntax. The problem exists both for the relatively layered structures of phrase structure grammars as well as for the flatter structures of dependency grammars.