quarta-feira, 8 de setembro de 2010

Present Perfect Simple

The present perfect simple expresses an action that is still going on or that stopped recently, but has an influence on the present. It puts emphasis on the result.




Form of Present Perfect
 
                                    Positive                   Negative                      Question


I / you / we / they     I have spoken.    I have not spoken.             Have I spoken?

he / she / it He          has spoken.      He has not spoken.               Has he spoken?

For irregular verbs, use the participle form (see list of irregular verbs, 3rd column). For regular verbs, just add “ed”.

Exceptions in Spelling when Adding ‘ed’

Exceptions in spelling when adding ed                                                  Example


1.after a final e only add d                                                                                     love – loved

2.final consonant after a short, stressed vowel
or l as final consonant after a vowel is doubled                                                    admit – admitted

                                                                                                                         

3. final y after a consonant becomes i hurry – hurried                                           travel – travelled



Use of Present Perfect


■puts emphasis on the result

Example: She has written five letters.



■action that is still going on

Example: School has not started yet.



■action that stopped recently

Example: She has cooked dinner.



■finished action that has an influence on the present

Example: I have lost my key.



■action that has taken place once, never or several times before the moment of speaking

Example: I have never been to Australia.



Signal Words of Present Perfect

■already, ever, just, never, not yet, so far, till now, up to now