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.
受到时态影响;
为疑问而转移方向,指向受话者。从功能
讲,机能情态
表达说话者对话语内容
态度,而本身属于话语命题内容。