Completed actions or states in the past with a finished time reference
Regular: verb + -ed (walk → walked); Irregular: learn the form (go → went)
Subject + did not (didn't) + base verb
Did + subject + base verb?
💡 No -ed after did in negatives/questions. Irregular verbs must be memorized.
✓She finished her homework last night.
✗She finish her homework last night.
Use past form (finished) for a completed action.
✓They didn't like the movie.
✗They didn't liked the movie.
After did/didn't, use the base verb (like).
✓Did you meet the new teacher?
✗Met you the new teacher?
Questions use did + subject + base verb.
✓I went to bed early.
✗I go to bed early yesterday.
Irregular verb: go → went in past simple.