It, the phonetic symbol is [? T], meaning it, can refer to some objects. It is also the abbreviation of Information Technology.

"it" is an English word, which can be used as a pronoun, noun or formal subject.

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1. As a pronoun, "it" is usually used to replace the things or objects mentioned before to avoid repetition. For example, "I bought a shirt, which is very comfortable." "Here," it "stands for" shirt ".

2. As a noun, "it" can represent an abstract concept or entity, which is usually related to the context. For example, "success means different things to everyone, but everyone pursues it." Here, "it" means "success".

As a formal subject, "it" usually appears at the beginning of a sentence to emphasize the verbs behind it. For example, "it is important to exercise regularly." Here, "it" means "exercise" and emphasizes that "exercise" is very important.

In a word, "it" is a very common English word, which can be used to replace the aforementioned things, to represent an abstract concept or entity, or to emphasize verbs in sentences.