Sentence examples for it is functions from inspiring English sources

See, for example, how "what it is" functions as an object in "I know what it is". Here it's the object of the verb "know". So the clause is doing the same job a noun could do: "I know Kelly". You won't be surprised to learn these are called noun clauses.

When it is functioning, "Minds of Concern" resembles a slot machine.

"There is heat coming from the enrichment plant, but that's not direct evidence that it is functioning.

Check it is functioning.

Test it out to ensure that it is functioning properly.

Test the circuit to make sure it is functioning properly.

Test the lock to make sure it is functioning properly.

The MiniLab Mkll comes preconfigured but it's functions can be customized through a separate app.

I don't think its role is critical, but it was functioning.

"It's function.

She was paid for the 2.5 hours it was functioning.