Don't or Doesn't? Which is correct? | Britannica Dictionary
https://www.britannica.com/dictionary/eb/qa/Don-t-or-Doesn-t-Which-is-correct-
WebAnswer "He doesn't like ice cream" is correct. When choosing between don't and doesn't it is important to remember that don't is a contraction of do and not, and doesn't is a contraction of does and not. Then the choice between do and does depends on its subject. Use does with third person singular subjects (he, she, it, that, John, Kim, a cat).
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