• Reflexive Pronouns

• 
• Use reflexive pronouns when the subject and the object of a verb are the same. In these sentences, replace the object of the sentence with a reflexive pronoun.

  
  

  -Jane looks at herself in the mirror.

  (Jane = subject, herself = object)

  
  

  Use by with a reflexive pronoun to mean 'alone'.

  -Jane eats lunch by herself. = Jane eats lunch  alone.

• I make myself breakfast every morning. John is single. He lives by himself.          We enjoyed ourselves on our date. Sam and Jack built a house by themselves.

• Be careful! You can use themselves for plural and singular 'they'.  Another option for singular 'they' is themself.

 

Source : Alison