Past Simple Negative Sentences

To make a negative sentence in the past simple, use didn't (did not) followed by the base form of the verb — not the past form. For example: "I didn't go to the party" (not "I didn't went"). This is one of the most common mistakes learners make. The word "didn't" already carries the past meaning, so the main verb stays in its base form. This rule applies to all verbs except "be," which uses "wasn't" or "weren't" instead.

The negative structure is the same for every subject: "I didn't eat," "she didn't eat," "they didn't eat." There is no change for third person, unlike in the present simple where we say "she doesn't." In spoken English, "didn't" is almost always used instead of the full form "did not," which sounds very formal. Practising negative sentences helps you describe things that did not happen, correct misunderstandings, and give accurate accounts of past events in everyday conversation and in Cambridge or IELTS writing tasks.