Is correct to say "how is" in a phrase which the subject was mentioned before?

It also showed me how is to ...


It also showed me how it is to ...

With "was" I would put the "it" but that is automatic for me. I don't know if that is incorrect, is it?

  • Including the "it" is usually more correct: "show me how it is"... – Peter May 4 '17 at 22:59
  • But once the subject was mentioned before, does it still necessary to mention it again? Is it not like a duplication or the second "it" is for the following phrase? – Bruno Felipe Leal Delfino May 4 '17 at 23:10
  • 1
    "It also showed me how it is to be a student." goes with the second part of the sentence. "How it is" is a standard pattern, it's not redundant. – Peter May 4 '17 at 23:12
  • @Peter Quite so. The two its refer to different things. – WS2 May 4 '17 at 23:57
  • Isn't the "it" always required? I'm trying to think of a situation where "how is" could ever be correct in this position. In the context, what would "how is" even mean? – tkp May 11 '17 at 23:32

The two "it"s refer to different things. The first "it" is whatever it is that's doing the showing. The second "it" is a dummy subject used where grammar requires one but there is no subject.

This is similar to "It is raining" or "Is it time yet?" The "it" provides a subject for a sentence or clause that requires a subject but doesn't have one. It is required.

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