This question already has an answer here:

Normally, if I want to build a question about someone's verb, then I know the following formula.

  1. building of statement.

  2. Adding auxiliary verb in the beginning of the sentence and make it question.

  3. adding WH question word before the auxiliary verb

For example:

It makes him happy > Does it make him happy? > What does make him happy?

Now my question is why do when we use the verb "weights" then we don't use the auxiliary verb in the 3rd stage (wh question word):

He weights 80 kg > Does he weights 80 kg? > Who weights 80 kg?

I found just a few results for: "who does weights" and a pretty much of them are not relevant. Maybe it's not about the word "weights" but it's about the wh question "who" that behaves as exceptional for the mentioned formula, and I see it a lot in the spoken language, but I don't have enough knowledge to say it confidently.

marked as duplicate by P. E. Dant, StoneyB, stangdon, Nathan Tuggy, Andrew Nov 17 '16 at 0:10

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  • What P.E. Dant said. Try searching for "Who weighs ..?" and you should get a much happier result. – Andrew Nov 16 '16 at 22:23
  • @P.E.Dant: Better check your dictionary again. Weight can most definitely be used as a verb in English. – Robusto Nov 16 '16 at 22:46
  • @Robusto - It can, but it's not what the OP means in this case. – stangdon Nov 16 '16 at 22:47
  • "Weight" is a verb in English, but it means to add weight, and it's transitive. The intransitive verb you are trying to use here is weigh. – P. E. Dant Nov 16 '16 at 22:50
  • @Stangdon: Not to be pedantic about it, but I was only responding to P.E. Dant's assertion, since deleted for obvious reasons, that weight is not a verb in English. He misspoke, I challenged, and now the matter has gone on too long. I intended to delete my comment once he did his, but now the chain has legs ... – Robusto Nov 17 '16 at 1:21