lunes, 22 de enero de 2018

Grammar Unit Present Perfect

  • We often use the present perfect to talk about things from the beginning of our life until now.
         John has travelled to lots of different countries.
         I haven´t met your brother.
  • When we use the present perfect with this meaning, we often use ever (= at any time in someone´s life) in questions, and never (= not ever) in sentences.
         Have you ever eaten seafood?
         She´s never tried to cook.
         Has Steve ever won a prize in a competition?.

  • The present perfect is formed with the present tense of have + past participle of the main verb.
         For regular verbs, the past participle has the same ed ending as the past simple.
         We´ve stayed in Athens three times.
         Julia hasn´t used a computer.
         Have they ever climbed a mountain?
         
         Irregular verbs have different past participles.
         We´ve been there three times.
         She hasn´t written any emails.
         Have they ever flown in a plane?
  • Present perfect questions are formed with have/has + subject + past participle.
         Have you ever seen a snake? Yes, I have / No, I haven´t.
         Has he ever had a job? Yes, he has / No, he hasn´t.

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