Can you spot the mistake? — Do vs Does

Added: 2026-05-05

The auxiliary verb 'does' is used with third-person singular subjects (he, she, it) in questions and negative sentences, following the same grammatical pattern as 'have' and 'has'. For example, 'Does she like coffee?' uses 'does' because 'she' is third-person singular, while 'I do' and 'You do' use 'do' because 'I' and 'you' are not third-person singular.