is it correct if i say "I did to know it".
Patty is correct, but I wonder if you meant I did too know it. If so, this is a casual emphatic expression used only in informal spoken English, and the more formal version would be I did so know it.
The meaning of the expressions I did too know it or I did so know it is to strongly disagree with someone who said you didn't know it. It is so strong that it could be considered rude, if not a little childish. Either expression is often shortened: I did too! / I did so! and usually punctuated by an exclamation mark.
A: Jack told me you didn't know that the party is tomorrow.
B: I did too know it! / I did too! / I did so know it! / I did so!
I hope this helps.
|link comment||answered Feb 25 at 12:28 Shawn Mooney Expert|
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