The word "加以" is a formal compound verb formed by combining the verb "加" (jiā, meaning "to add" or "to apply") with the preposition "以" (yǐ, meaning "with" or "by means of"). It functions grammatically to introduce and place emphasis on an action that is performed upon something previously mentioned, typically an abstract noun or a situation. Its formation follows a common pattern in Classical Chinese where "以" is used to introduce the instrument or manner of an action, and in modern usage, it has fossilized into a single lexical unit meaning "to apply (an action to something)" or "to exert." It is almost always used before a disyllabic verb (e.g., 加以解决, to apply a solution to it; 加以分析, to subject it to analysis), giving the phrase a formal, procedural, or deliberate tone often found in written and official contexts.