改正以下句子中的语法错误并给出解释。


He don't like coffee.
Corrected sentence: He doesn't like coffee.

Explanation: 

The original sentence contains a subject-verb agreement error. "He" is a third person singular subject, so it requires the third person singular form of the verb "to do," which is "does" in the present tense. "Don't" is the contraction of "do not" and is incorrect in this context. The correct form is "doesn't," which is the contraction of "does not."