Simple Past vs Present Perfect
Transcript of Simple Past vs Present Perfect
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SIMPLE PAST VS PRESENT PERFECTEnglish Grammar Online 4U, Simple Past – Present Perfect. http://www.ego4u.com/en/cram-up/grammar/simpas-preper, consulté le 03 mai 2009
Form
Simple Past tense Present Perfect tense
irregular verbs: Simple past of
irregular verbs, 2nd column.
Example:
I knew
Irregular verbs: form of 'have' +
past participle of irregular verbs,
3rd column
Example:
I / you / we / they have broken
he / she / it has broken
Regular verbs: infinitive + ed
Example:
I played
Regular verbs: form of 'have' +
infinitive + ed
Example:
I / you / we / they have played
he / she / it has played
Exceptions when adding 'ed':
1. When the final letter is e, only add d Example:love - loved
2, After a short, stressed vowel, the final consonant is doubled Example:
admit - admitted
3. After a consonant, final y becomes i (but: not after a vowel) Example:
worry - worriedbut: play - played
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Use1. A time expression in the past is given, you have to use Simple Past
2. Certain time in the past or just / already / yet?
Simple Past tense Present Perfect tense
certain time in the past
Example:I called Mary 2 minutes ago.
just / already / not yet
Example:I have just called Mary.
3. Certain event in the past or how often so far? An action that took place / how often an action has happened till now.
Simple Past tense Present Perfect tense
certain event in the past
Example:
He went to Canada last summer.
whether / how often till now
Example:
Have you ever been to Canada? / I
have been to Canada twice.
4. Emphasis on action or result? Expressing what happened in the past with the result / putting the emphasis on the past action’s consequence in the present.
Simple Past tense Present Perfect tense
Emphasis on action
Example:
I bought a new bike. (just telling what
I did in the past.)
Emphasis on result
Example:
I have bought a new bike. (With
this sentence I actually want to
express that I have a new bike
now.)
Key Words to use properly with each tense
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Simple Past tense Present Perfect tense
yesterday
... ago
in 1990
the other day
last ...
just
already
up to now
until now / till now
ever
(not) yet
so far
lately / recently
EXERCISE LINKS:
http://www.englishpage.com/verbpage/verbs5.htm
http://www.englishpage.com/verbpage/verbs6.htm
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/ppvpast1.htm
http://www.better-english.com/grammar/pspp1.htm
http://www.english-zone.com/verbs/prsperf4.html
http://www.geocities.com/gob72/Simplevsperfectpast.htm
http://perso.wanadoo.es/autoEnglish/gr.perf.i.htm
http://a4esl.org/q/f/z/zz29bms.htm