Languages › English as a Second Language Common Mistakes in English - Good vs. Well Share Flipboard Email Print Tom Grill/Getty Images English as a Second Language Grammar Pronunciation & Conversation Vocabulary Writing Skills Reading Comprehension Business English Resources for Teachers By Kenneth Beare English as a Second Language (ESL) Expert TESOL Diploma, Trinity College London M.A., Music Performance, Cologne University of Music B.A., Vocal Performance, Eastman School of Music Kenneth Beare is an English as a Second Language (ESL) teacher and course developer with over three decades of teaching experience. our editorial process Kenneth Beare Updated December 24, 2018 "Good" is often mistakenly used in place of "well" by both native and non-native speakers. Take a look at the differences between the adjective and adverb form which is certainly one of the most common mistakes in English. The most important distinction is that 'well' describes how someone does something, whereas 'good' is used to describe a noun such as "good times", "good food", etc. Good or Well Good is an adjective and well is an adverb. Many people, including many native speakers, incorrectly use the adjective form good, rather than the adverb well. Examples: I did good on the test. INCORRECT! - Correct form: I did well on the test.She played the game good. INCORRECT! - Correct form: She played the game well. Use the adjective form good when describing something or someone. In other words, use good when stating how something or someone is. Examples: She is a good tennis player.Tom thinks he is a good listener. Use the adverb form well when describing how something or someone does something. Examples: She did extremely well on the exam.Our parents think we speak English well.