What are the rules for using reflexive pronouns?

The rules for using reflexive pronouns are as follows:

1. Reflexive pronouns are used when the subject and the object of a sentence refer to the same person or thing. For example: "I hurt myself."

2. Reflexive pronouns are formed by adding "-self" (singular) or "-selves" (plural) to the appropriate personal pronoun. For example: "myself," "yourself," "himself," "herself," "itself," "ourselves," "yourselves," "themselves."

3. Reflexive pronouns are used to emphasize the subject or to show that the action of the verb is directed back to the subject. For example: "She made the cake herself."

4. Reflexive pronouns can also be used for reciprocal actions, where two or more people are involved in the same action. For example: "They introduced themselves to each other."

5. Reflexive pronouns are not used after certain verbs that already indicate a reflexive action, such as "enjoy," "relax," "meet," "wash," etc. For example: "I enjoyed the movie" (not "I enjoyed myself the movie").

6. Reflexive pronouns are not used when the action is performed by someone else. For example: "He washed the car for me" (not "He washed myself the car for me").

7. Reflexive pronouns can be used as intensive pronouns to add emphasis to a noun or pronoun in a sentence. For example: "I myself will take care of it."

It is important to follow these rules to ensure correct usage of reflexive pronouns in writing and speaking.