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Present Perfect and Simple Past

For and Since
by

Adriana Morales

on 10 October 2012

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Transcript of Present Perfect and Simple Past

Present Perfect
vs
Simple Past Present Perfect When we use the present perfect? We use the present perfect to talk
about experiences in our lives.
Have you ever been to Toronto?
I have traveled a lot in Asia.
They have live all over the world. The present perfect looks back from the present into the
past, and expresses what has happened before now.
The action happened at an indefinite time in the past.
I have met a lot of famous people. (Before now).
She has won awards (in her life).
She has written 20 songs (up to now). The present perfect expresses an action or state which began in the past and continues to the present.
*How long have you worked as a teacher?
*I have known Alicia for six years. The present perfect expresses a past action with
results in present. It is often a recent past action.
The taxi has arrived (it outside the door right now)
I have lost my wallet (I don’t have it now). Ever and never:
*We use ever in questions.
*We use never in negative sentences. The adverbs: just, already, and yet are common in present perfect... Yes/no questions Have you been to Spain? *Yes, I have.
*No, I haven’t. Irregular verbs
Person + has/have + the past participle.
Regular verbs
Person + has/have + the regulars verbs + ed. Form Time expressions 1.The Past Simple refers to an action that happened at a definite time in the past.
He died in 1882
She got married when she was 22
The action is finished
I lived in Bangkok for a year (but not now)
2.Time expressions + the past simple
In 1999
Last week
I did it Two months ago
On March 22
For two years 1.The present perfect refers to an action that happened at an indefinite time in the past.
She has won awards.
She has written 20 songs.
The action can continue to the present.
She has lived there for 20 years (and she still does).
2.Time expressions + present perfect.
For 20 years.
Since 1995.
Since I graduated from school.
I have worked here..
We have never been to Costa Rica. References OXFORD, (2001), America headway, United States, New York: Oxford Present Perfect Past Simple We use yet in negative sentences and questions:

* Have you done your homework yet?

* I haven’t done it yet (but I am going to do). Just
We use just to indicate something to happened short time ago:
•She has just had some good news. Questions Negative HAVE YOU EVER MET A FAMOUS PERSON? No I have never met a Famous person. Positive Yes, I have met Brad Pitt. Simple Past Positive sentences Subject + main verb (past) Examples: I went to school.
You worked very hard. Negative sentences Subject + auxiliary verb(did) + not + main verb(base) Examples: She did not go with me.
We did not work yesterday. Questions Auxiliary verb(did) + subject + main verb(base) Examples: Did you go to London?
Did they work at home? *The auxiliary verb did is not conjugated. It is the same for all persons (I did, you did, he did etc). And the base form and past form do not change. Was & Were We use “was” for the subjects: I, She, He, It.
We use “were” for the subjects: You, we, they. Examples: *He was handsome.
*You were at the cinema yesterday. NegatiVe Sentences Was + not (wasn’t) or were + not (weren’t) Examples: *They were not at the University en the morning.
*She wasn’t at home yesterday. Uses of Simple Past

*Action in the past taking place once, never or several times.
Example: He visited his parents every weekend.
*Actions in the past taking place one after the other.
Example: He came in, took off his coat and sat down.
*Action in the past taking place in the middle of another action.
Example: When I was having breakfast, the phone suddenly rang.
*If sentences type If (If I talked, …)
Example: If I had a lot of money, I would share it with you.
PAST SIMPLE SONG For To measure a period of time up to the present, we use the present perfect tense and not the present tense Since Gives the starting point of actions, events or states. It refers to when things began.
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