I suppose that if somebody said there was a mistake that would mean it isn't there anymore. Practically speaking, there might not be any difference. Finally, you could simply say, "I found a mistake." :)1.
a. I found there is a mistake
b. I found there was a mistake
what's the difference between a and b ?
"How did you know I am here" simply isn't used. In any event, the speaker would be talking about an event that occurred in the past, even if only a relatively brief time in the past.2.
how did you know I was here ? ( why instead of "how did you know I am here ? " because the speaker is here at the monment, it's true! should be " I am here" instead of " I was here")
Stricly speaking, according to the rules of prescriptivist grammar, you are right. :)3.
what does it mean by " don't let nobody touch it , that is my favorite radio"? ( should be " don't let anybody touch it " )
Brief Verse (Couplets)