They are: that, this, these and those.

that，this，these 和 those。

Of special importance are the words “this” or “that” — and their related plural forms “these” and “those.”

特别重要的是单词“this”或“that”——以及它们相关的复数形式“these”和“those”。

The plural forms of these adjectives are " these" and " those."

这些形容词的复数形式是“这些” 和“那些” 。