Present perfect

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present perfect and simple past

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Present perfect

  1. 1. PRESENT PERFECT PAST SIMPLE
  2. 2. Use <ul><li>We only know that the action happened at some time before now </li></ul><ul><li>We use this tense to talk about past events and activities with results /consequences in the present </li></ul>
  3. 3. AFFIRMATIVE sentences <ul><li>I/you/ we/they HAVE LOST the key </li></ul><ul><li>He/she/it HAS LOST the key </li></ul><ul><li>Here we are not thinking about the past action. We are thinking of the present result of the action. I don't have the key now </li></ul>
  4. 4. Negative sentences <ul><li>I/you/ we/they HAVEN’T LOST the key </li></ul><ul><li>He/she/it HASN’T LOST the key </li></ul>
  5. 5. SHORT QUESTIONS <ul><li>HAVE I/you/we/they LOST the key? </li></ul><ul><li>Yes, I/you/we / they HAVE </li></ul><ul><li>No, I /you/ we they HAVEN’T </li></ul><ul><li>HAS he/she/it LOST the key? </li></ul><ul><li>Yes, he/she/ it HAS </li></ul><ul><li>No, he/she/it HASN´T </li></ul><ul><li>What has he done? </li></ul><ul><li>He has lost the key </li></ul>
  6. 6. Time adverbials <ul><li>We use NEVER and YET in NEGATIVE sentences </li></ul><ul><li>We use ALREADY in AFFIRMATIVE sentences </li></ul><ul><li>We use YET and EVER in QUESTIONS </li></ul>
  7. 7. REMEMBER <ul><li>YET: at the end (- / ?) </li></ul><ul><li>ALREADY (+) /EVER (?) /NEVER (-) before the main verb </li></ul><ul><li>FOR AND SINCE </li></ul>
  8. 8. For <ul><li>FOR + period of time. </li></ul><ul><li>Example: 1- for ages </li></ul><ul><li>2- for a long time </li></ul><ul><li>3- for two years </li></ul><ul><li>4- for the last week </li></ul>
  9. 9. Since <ul><li>SINCE + point in time </li></ul><ul><li>Example: 1- since June </li></ul><ul><li>2- since I was a child </li></ul><ul><li>3- since Monday </li></ul><ul><li>4- since last week </li></ul>
  10. 10. Simple past <ul><li>We know exactly when the thing happened </li></ul><ul><li>We use this tense to talk about an action which started and finished in the past </li></ul>
  11. 11. Affirmative and Negative Sentences <ul><li>I LOST the key yesterday (+) </li></ul><ul><li>I PLAYED football yesterday </li></ul><ul><li>I DIDN´T LOSE the key yesterday (-) </li></ul>
  12. 12. QUESTIONS <ul><li>DID YOU LOSE the key yesterday? </li></ul><ul><li>Yes, I DID </li></ul><ul><li>No, I DIDN’T. I LOST my pencil case </li></ul><ul><li>WHAT DID you do yesterday ? </li></ul><ul><li>I lost my key </li></ul>
  13. 13. TIME REFERENCE <ul><li>YESTERDAY (morning, afternoon, evening) </li></ul><ul><li>LAST night/ month </li></ul><ul><li>Two hours AGO </li></ul><ul><li>FROM (1995) TO (1998) </li></ul>

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