指示代词：彼此、如此
Giải thích
“彼此”指代双方或多方，表示相互之间的关系，常作状语或宾语；“如此”是指示代词，表示程度或方式，意为“这样”、“那样”，常用来修饰形容词或动词。
"彼此" refers to both or multiple parties, indicating a mutual relationship, often functioning as an adverbial or object; "如此" is a demonstrative pronoun indicating degree or manner, meaning "such" or "in this way", often modifying adjectives or verbs.
Ví dụ
朋友之间应该彼此信任。
Friends should trust each other.
我们是多年的好朋友，不分彼此。
We have been close friends for many years, and there is no distinction between us.
十年后，两座城市的发展状况如此不同。
Ten years later, the development of the two cities is so different.
他如此认真地锻炼是为了有个健康的身体。
He exercises so diligently in order to have a healthy body.