I’ve noticed a few times where someone says something like “Did you made...” or “Did you worked...” when asking questions. Is this some kind of unofficial talk or is it completely incorrect ...
Reading Harry Potter 2, I came across the following, and I wonder if the use of couldn't have is the equivalent of couldn't in this context? "I have got a question, Oliver," said George, who had ...
I have seen uses of must that appear to be in the simple past tense. Sometimes these seem grammatical, but sometimes not. Examples that help illustrate my confusion: He knew he must go to New York ...