It covers any descriptive or analytical symbols applied to the original language data.

It is to describe or analyze the comments marked in the corpus you collected.

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I can't find a place to answer your supplementary question. Add here:

To do corpus word frequency analysis, we must analyze keywords. The labeling suggested by your teacher should be aimed at key words. As I said above, I suggest you either describe the grammatical structure or analyze the semantics.

Let me give you some examples of structural analysis with GOT:

You got the right product.

So he got more.

We must understand it.

Wait a minute.

There are several structures of GOT here: GOT+ noun,+adjective, +TO, etc.

By analogy, semantically believe that you know how to do it.