Present Perfect Tense

Present Perfect Tense

1. Use

   • Unspecified action before now
   • Life experience
   • New information
   • Present result
   • signal words
     • just
     • yet
     • never
     • since
     • already
     • ever
     • for
     • recently

2. Possitive form

   • Subject + Have / Has + Past Participle
     • You have studied the lesson.

3. Negative Form

   • Subject + Haven't / Hasn't + Past Participle
     • You have not studied the lesson.

4. Interrogative form

   • Have / Has + Subject + Past Participle
     • Have you studied the lesson?