The reasons for this may be resulted from the unintentional act taken by the speaker, either the speaker has mis-estimated the scope of knowledge or the intention of conversation by the other party, or he do it intentionally for some purposes (such as pro
The reasons for this may be resulted from the unintentional act taken by the speaker, either the speaker has mis-estimated the scope of knowledge or the intention of conversation by the other party, or he do it intentionally for some purposes (such as pro
产生的原因可能是非故意，如说话者错误估计了对方的知识范围或话语意图；也可能是为了某种目的（如试探虚实或纯粹逗乐）而故意为之。