Using myself, yourself, himself, herself, itself, ourselves, yourselves, themselves
Subject + verb + reflexive pronoun (matching subject)
Subject + don't/doesn't + verb + reflexive pronoun
Did + subject + verb + reflexive pronoun?
💡 Singular: myself, yourself, himself, herself, itself. Plural: ourselves, yourselves, themselves.
✓She cut herself while cooking.
✗She cut her while cooking.
Same person = reflexive.
✓Help yourself to some food.
✗Help you to some food.
Fixed expression with reflexive.
✓I did the work myself.
✗I did the work by me.
Emphasis uses reflexive; alone uses by + reflexive.