Use of the auxiliary verb do, including its inflected forms does and did, to produce negated clauses and questions as well as other constructions in which subject–auxiliary inversion is required
use of the auxiliary verb do, including its inflected forms does and did, to produce negated clauses and questions as well as other constructions in which subject–auxiliary inversion is required (en)
je gramatiko de la angla, la uzo de la helpa verbo ⟨do⟩ (IFA: du) por konstrui demandan frazon: ekz. “You have an apple.” (Vi havas pomon.) → “Do you have an apple?” (Ĉu vi havas pomon?) (eo)