实际上指示形容词和指示代词都是相同的词,只是在用法上不同而已.this that those these one当这些词用作定语时,他们具有形容词词性；当他们用作主语、宾语、表语时,他们具有名词词性,因为他们是【指代】,所以是【指示代词】.
作定语：
This/That girl is Li Ping.These/Those men are my teachers.
One(是数词) boy is standing over there.
作主语、宾语、表语
1.作主语：
This/That is Li Ping.These/Those are my teachers.
One is mine.The other one is his.
2.作宾语：
Please give this/that to Li Ping.Please give these/those to your teachers.
Please give one to your brther and the other one to your sister.
阿弥陀佛!