Present Perfect Simple
It expresses an action that stopped recently or is still going on, but influences the present. Present perfect tense emphasizes the result.

Form of Present Perfect

Form of Present Perfect

For irregular verbs, we use the participle form in the present perfect tense. 
For regular verbs, we just add "ed" in the present perfect tense.

Use of Present Perfect Tense
Use of Present Perfect Tense
  • Puts emphasis on the resultExample: She has read five letters.
  • Action that is still going on. Example: Class has not ended yet.
  • Action that stopped recently. Example: He has cooked dinner.
  • Finished action that has an influence on the present. Example: They've lost my key.
  • Action that has taken place once, never or several times before the moment of speaking. Example: I've never been to Delhi.

Signal words for Present Perfect Tense

  • Already
  • Ever
  • Just
  • Never
  • Not yet
  • So far
  • Till now
  • Up to now.