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                   5.1     Present Perfect: Statements

                                           Statements                              Contractions
                                                       Past                     I have    I’ve
                     Subject         Have or Has (Not)
                                                       Participle               You have    You’ve
                                                                                He has    he’s
                                     have
                     I/We/You/They                     planned    my trip.      She has    She’s
                                     have not/haven’t
                                                                                It has    It’s
                                                                                We have    We’ve
                                     has
                     He/She/It                         eaten      dinner.       You have    You’ve
                                     has not/hasn’t
                                                                                They have    They’ve

                       1. Use the present perfect:
                                                                                    the plane arrived
                         a.  for a recently completed action        a.
                                                                                                    now
                                                                        The plane has arrived.
                         b.   when a time period is not complete,   b.   John hasn’t called today.
                           such as this morning, this afternoon,       (It’s only 4:00 p.m.)
                           today, this week
                                                                               read that book
                         c.   for an action or event that happened   c.
                           one or more times at an indefinite time                                  now
                           in the past                                  I have read that book three times.

                         d.   when the time of the past action or     d.   I have washed the dishes.
                           event is not known or important, but        (They are clean now.)
                           the result of or the experience from the        Nancy has lived in Mexico City.
                           action or event is.
                                                                       (She knows a lot about it.)

                       2. The present perfect is formed with have or   My brother worked late yesterday. (simple past)
                        has + the past participle of the verb. The   He has worked late a lot recently. (present perfect)
                        past participle of regular verbs is the same
                        form as the simple past (the base form of
                        the verb + -ed).

                       3. Many verbs have irregular past participles.*  Base   Simple Past   Past Participle
                                                                  do         did             done
                                                                  get        got             got/gotten
                                                                  go         went            gone
                                                                  have       had             had
                                                                  make       made            made


                       *See page A4 for a list of irregular verbs.



                     4  Complete each sentence with the present perfect form of the verb in parentheses.

                         1.  The Aral Sea   has become                (become) ten times smaller in the last 50 years.

                         2.  The dam                              (not help) the southern Aral Sea.

                         3.  The Aral Sea                             (be) the topic of many discussions.

                         4.  We                              (not hear) the latest news about the Aral Sea.



        124   The PReSeNT PeRFeCT
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   51106_GE2_U05_120-155_ptg01.indd   124                                                                        5/15/15   3:00 PM
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