What is the difference between
I recognise you.
I do recognise you.
" When you use do in a positive sentence, like "I do recognize you" you are being emphatic. Perhaps you are changing what you said a moment ago, or the person says you do not, and you want to be very clear that you do. No, I'm sorry, your face isn't familiar to me...
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Most of the time, we make positive statements without "do." We use "do" for asking questions, as in "Did you recognize him?" and for the negative "I do not recognize you."
When you use do in a positive sentence, like "I do recognize you" you are being emphatic. Perhaps you are changing what you said a moment ago, or the person says you do not, and you want to be very clear