Do/does and Who

Question

My question is related with the use of do/does with a 'Who' question for example:

- Who does always wear a hat ?
- Who always wears a hat ?

- Who does Carol usually eat lunch with ?
- Who Carol usually eats lunch with ?

Which one is correct ? and how to know when to use do/does ?

CalifJim · Accepted Answer

I think I just answered a question just like this one. Think of questions as forms that start as statements with blanks.

A. ____ always wears a hat.

C. Carol usually eats lunch with ___.

A. If the blank is at the beginning, just substitute Who for the blank.

____ always wears a hat.
>>> Who always wears a hat?

C. If the blank is not at the beginning, say Who then invert the subject and verb. But you can't invert a main verb like "eats", so you have to change it to "does eat" first.

Carol usually eats lunch with ___.
>>> Carol usually does eat lunch with ____?
>>> Who does Carol usually eat lunch with?
___________________________________

So there are three types.

A. The blank is at the beginning.
B. The blank is not at the beginning. There is an invertible verb (like is, has, do, may, will, ...).
C. The blank is not at the beginning. There is no invertible verb.

For A, don't change anything.
For B, invert subject and verb.
For C, add do, does, or did, as appropriate, and invert subject and the verb you added (do, does, or did).
And for C, don't forget to change the main verb to its base form.

A. Who is there? Who knows the answer? Who can sing this song? Who said that? Who has seen it? Who can go?
B. Who has Alex seen? Who can Mary talk to? Who is Frank helping? Who will the boss hire?
C. Who does Larry admire? Who did Fred see? Who do they talk to? Who does Laura play cards with?

CJ

Do/does and Who

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