1 ADJ-GRADED [usually ADJ n] (姿势、语调)询问的，疑问的 An interrogative gesture or tone of voice shows that you want to know the answer to a question. (姿势、语调)询问的，疑问的 [written]

2 N-SING 疑问句;疑问结构 In grammar, a clause that is in the interrogative, or in the interrogative mood, has its subject following 'do', 'be', 'have', or a modal verb. Examples are 'When did he get back?' and 'Are you all right?'. Clauses of this kind are typically used to ask questions. 疑问句;疑问结构

3 N-COUNT 疑问词 In grammar, an interrogative is a word such as 'who', 'how', or 'why', which can be used to ask a question. 疑问词