Deictic expressions are of the preemptive nature, which is, however, conditioned;in certain contexts and/or styles, such nature may disappear, that is, the anti-preemptiveness arises.

• 指示词语具有先用性的特点，但这种先用作用是有条件限制的，在一些特殊的语境和语体中会随之消失，即出现反先用现象。