As to dynamic modality, it can always be hypothesized in a conditional protasis, is always subject to tense distinction, and does not shift its orientation under the influence of interrogation.
到时态的影响;不会因为疑问而转移方向,指向者。从功能讲,机能情态不表达说者对语内容的任何态度,而本身属语命题内容。