@oristarA,
Quote:I don't understand why you have used "do" there. It seems redundant.
Exactly what part of my post do you consider was rude, Izzy.
As noted by the big island grammarian, 'do' isn't redundant, Ori. In fact, it's necessary.
Exactly what part of my post [do] you consider was rude, Izzy.
If we removed 'do', we'd end up with an unnatural collocation.
The underlined portion can be considered the same as in the following.
Do you consider that certain parts of my post were rude, Izzy?