module 3 THE USE OF PAST SIMPLE AND PRESENT PERFECT TENSES Look at the grid and look at the two different tenses carefully: TENSE AFFIRMATIVE INTERROGATIVE NEGATIVE 1st person sing. 2nd person sing. 3rd person sing. PAST SIMPLE I studied Did you study? He did not (didn t) study PRESENT PERFECT to have + past participle I have (I ve) studied Have you studied? He has not (hasn t) studied GRAMMAR Short Answers. Past Simple: Yes, + subject + did - No, + subject + didn t Present Perfect: Yes, + subject + have/has - No, + subject + haven t/hasn t Remember that: The Past Simple is used to talk about actions that happened at a specific and finished time in the past. You state when it happened using a time adverb: yesterday, last month/week/year, in 2012, two days ago, three hours ago, etc. The Present Perfect is used for something happened at an unspecified point of time in the past, or with ever/never, or with time adverbs or expressions like: already, just, yet, until now, so far, recently, lately. The position of adverbs in the sentence is always between the subject and the auxiliary, with the exception of yet which goes at the end of the sentence. Keep in mind! I have met Patty this morning. It s still morning so we use the Present Perfect Tense. I met Patty this morning. We are no more in the morning, we are in the afternoon, in the evening or at night so we use the Past Simple. With When...? and What time...? the tense used is always the Past Simple. Read the text in Unit 1, Chapter A Consumerism again; circle the Past Simple Tenses and underline the Present Perfect Tenses. Underline the correct tense in these sentences. a. Did Kevin dance / Has Kevin danced on stage last night? b. Have you ever copied / Did you ever copy a test from a classmate? c. Did Jack already do/ Has Jack already done his homework? Yes, he has/he did. d. When have you met / did you meet him? I have met / met him two days ago. e. Did/has Louise tidy/tidied her house yet? 114