Past Simple Negatives and Questions: Did and Didn’t
Make past simple negatives and questions with did, didn’t, and the base form of the main verb.
Learning Objective
Past Simple Negatives and Questions: Did and Didn’t
Form past simple negatives, yes/no questions, and wh-questions accurately.
Clear Explanation
Use did not or didn’t plus the base verb for negatives. Put did before the subject in questions, and keep the main verb in its base form.
Form and Structure
subject + didn’t + base verb; Did + subject + base verb?
“I didn’t see the message.”
When who or what is the subject, do not use did: Who called you? Compare: Who did you call?
Meaning and Use
Negative form
Didn’t carries the past tense, so the main verb stays in the base form.
“He didn’t call.”
Yes/no questions
Use Did + subject + base verb.
“Did Maya arrive on time?”
Wh-questions
Place the question word before did unless the question word is the subject.
“Why did you leave early?”
Common Errors and Meaning Traps
I didn't saw him.
I didn't see him.
Didn’t already marks past time, so use the base form see.
Did she finished the task?
Did she finish the task?
Use the base form after did.
Where you did go?
Where did you go?
In a wh-question, did comes before the subject.
Guided Practice
Use the grammar in context
“Did you finish the report?”
“Where did they stay?”
Turn one past statement into a negative, a yes/no question, and a wh-question.
Quick Recap
Use did not or didn’t plus the base verb for negatives. Put did before the subject in questions, and keep the main verb in its base form.
Didn’t carries the past tense, so the main verb stays in the base form.
When who or what is the subject, do not use did: Who called you? Compare: Who did you call?
Didn’t already marks past time, so use the base form see.
Independent Mastery Check
Complete these four checks before taking the quiz. If one feels difficult, return to the matching section and try again.
Explain the core rule in your own words without looking back at the lesson.
Find the target form in “I didn’t see the message.” and explain what it communicates in this context.
Explain why “I didn't see him.” is the recommended revision for “I didn't saw him.”.
Turn one past statement into a negative, a yes/no question, and a wh-question.
Related Grammar Lessons
Aim for at least 5 out of 6 in the quiz below. For every missed answer, read the explanation, return to the relevant section, and try the quiz again.
Which statement best explains Past Simple Negatives and Questions: Did and Didn’t?
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