'Do' with 'wh' questions

[Jaguar]

Hello,

Please correct me if I’m wrong.

Do not use do/does/did in questions if who/what/which is the subject in the sentence.

Taking this into account the following example is correct because ‘channels’ is the subject.

Which channels don’t have commercials in your country?
(Example from Oxford English File)

Thanks:up:
Jag

 

[Aligor]

Compare these:

Which channels have commercials in your country?
Which channels don't have commercials in your country?

"Don't" is used not because it is needed to form a question, but as a part of negation.

So, you really

do not use do/does/did in questions if who/what/which is the subject in the sentence

 

[David L.]

Do not use do/does/did in questions if who/what/which is the subject in the sentence.
Who does the cooking in your home?
What does that word mean?
Which of the two did you choose?

Is this what you mean?

 

[Aligor]

Well, YES!

Who cooks meals in your house? So, in "does the cooking" "does" is not used to form a question.

And in the other two sentences "what" and "which" are not subjects:

What does that word mean? "word" is the subject
Which of the two did you choose? "you" is the subject

The rule is true if that's what you're doubting.

 

[David L.]

My post was meant for Jaguar, as I am not sure what he means about not using relative pronouns preceding 'does', and gave examples to see how they fitted into his query.

 

[Aligor]

I am sorry, I haven't noticed.

But Jaguar was speaking about not using "do/does/did" in questions if "who/what/which" was the subject of the sentence. Meaning that the auxiliary verb is not used in this case to form a question which is right.