In a sentence I want to disagree with the speaker:
- I can't speak english
- I can, too.
Is right to use "I can, too" in this case?
Ps.: I found this example on 5minuteenglish (B and C say the same thing in a different way according to the website)
No, too is only used when you are in agreement.
EDIT: Someone brought up the American slang of "Can too." in reply to "You can't X." I'm English so I can't speak for how common it is there, but it's definitely ungrammatical at the very least.