[Oldman]

Thanks a ton for your reply/help...


Here is where I am at:

1) How long ago did you study medicine?
2) How long ago did you not study medicine? - implying that he is currently studying medicine. which is equivalent to "How long ago did you start studying medicine?" equivalent to "How long have you been studying medicine?
3) How long have you been studying medicine?
4) How long have you not been studying medicine (your wording) or (my wording) How long has it been since you studied medicine?

I am concluding that question 1 and 4 are asking the same question (and that questions 2 and 3 are asking the same question) despite both using different wording and tenses.

(Perhaps the negation of the past tense is the present tense, and the negation of the present tense is the past tense? Dare I go that far?!!!!)

Pease help me get this squared away, if my understanding is incorrect on the meanings/translations. I am certainly stuck