Aud tributaria

Solo disponible en BuenasTareas
  • Páginas : 11 (2677 palabras )
  • Descarga(s) : 0
  • Publicado : 17 de marzo de 2012
Leer documento completo
Vista previa del texto
Present Perfect Simple – Present Perfect Progressive
|Present Perfect Simple |Present Perfect Progressive |
|irregular verbs: form of ‘have’ + 3rd column of |form of ‘have’ + been + verb + ing |
|irregular verbs |Example:|
|Example: |I / you / we / they have been speaking |
|I / you / we / they have spoken |he / she / it has been speaking |
|he / she / it has spoken ||
|regular verbs: form of ‘have’ + infinitive + ed | |
|Example: | |
|I / you / we / they have worked ||
|he / she / it has worked | |
|Exceptions |
|Exceptions when adding ‘ed’ : |Exceptions whenadding ‘ing’ : |
|when the final letter is e, only add d |silent e is dropped. (but: does not apply for -ee)Example: come – coming |
|Example: |aber: agree – agreeing |
|love – loved |after a short,stressed vowel, the final consonant is doubledExample: sit – |
|after a short, stressed vowel, the final consonant |sitting |
|is doubled |after a vowel, the final consonant l is doubled in British English (but not in|
|Example: |AmericanEnglish).Example: travel – travelling |
|admit – admitted |final ie becomes y.Example: lie – lying |
|final l is always doubled in British English (not | |
|in American English) ||
|Example: | |
|travel – travelled | |
|after a consonant, final y becomes i (but: not ||
|after a vowel) | |
|Example: | |
|worry – worried ||
|but: play – played | |


See also explanations on Present Perfect Simple and Present Perfect Progressive

Use
Both tenses are used to express that an action began in the past and is still going on or has just...
tracking img