指示詞

Demonstratives (abbreviated dem) are words, such as this and that, used to indicate which entities are being referred to and to distinguish these entities from others. They are typically deictic, their meaning depending on a particular frame of reference, and cannot be understood without context. Demonstratives are often used in spatial deixis (where the speaker or sometimes the listener is to provide context), but also in intra-discourse reference (including abstract concepts) or anaphora, where the meaning is dependent on something other than the relative physical location of the speaker. An example is whether something is currently being said or was said earlier.Demonstrative constructions include demonstrative adjectives or demonstrative determiners, which specify nouns (as in Put that coat on), and demonstrative pronouns, which stand independently (as in Put that on). The demonstratives in English are this, that, these, those, and the archaic yon and yonder, along with this one, these ones, that one and those ones as substitutes for the pronouns.