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Engleza

Present Perfect

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Present Perfect

 

FORM

[has/have + past participle]

Examples:

  • You have seen that movie many times.
  • Have you seen that movie many times?
  • You have not seen that movie many times.

Complete List of Present Perfect Forms

USE 1 Unspecified Time Before Now

 

We use the Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important. You CANNOT use the Present Perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, when I lived in Japan, at that moment, that day, one day, etc. We CAN use the Present Perfect with unspecific expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc.

Examples:

  • I have seen that movie twenty times.
  • I think I have met him once before.
  • There have been many earthquakes in California.
  • People have traveled to the Moon.
  • People have not traveled to Mars.
  • Have you read the book yet?
  • Nobody has ever climbed that mountain.
  • A: Has there ever been a war in the United States?
    B: Yes, there has been a war in the United States.

How Do You Actually Use the Present Perfect?

The concept of “unspecified time” can be very confusing to English learners. It is best to associate Present Perfect with the following topics:

TOPIC 1 Experience

You can use the Present Perfect to describe your experience. It is like saying, “I have the experience of…” You can also use this tense to say that you have never had a certain experience. The Present Perfect is NOT used to describe a specific event.

Examples:

  • I have been to France.
    This sentence means that you have had the experience of being in France. Maybe you have been there once, or several times.
  • I have been to France three times.
    You can add the number of times at the end of the sentence.
  • I have never been to France.
    This sentence means that you have not had the experience of going to France.
  • I think I have seen that movie before.
  • He has never traveled by train.
  • Joan has studied two foreign languages.
  • A: Have you ever met him?
    B: No, I have not met him.

TOPIC 2 Change Over Time

We often use the Present Perfect to talk about change that has happened over a period of time.

Examples:

  • You have grown since the last time I saw you.
  • The government has become more interested in arts education.
  • Japanese has become one of the most popular courses at the university since the Asian studies program was established.
  • My English has really improved since I moved to Australia.

TOPIC 3 Accomplishments

We often use the Present Perfect to list the accomplishments of individuals and humanity. You cannot mention a specific time.

Examples:

  • Man has walked on the Moon.
  • Our son has learned how to read.
  • Doctors have cured many deadly diseases.
  • Scientists have split the atom.

TOPIC 4 An Uncompleted Action You Are Expecting

We often use the Present Perfect to say that an action which we expected has not happened. Using the Present Perfect suggests that we are still waiting for the action to happen.

Examples:

  • James has not finished his homework yet.
  • Susan hasn’t mastered Japanese, but she can communicate.
  • Bill has still not arrived.
  • The rain hasn’t stopped.

TOPIC 5 Multiple Actions at Different Times

We also use the Present Perfect to talk about several different actions which have occurred in the past at different times. Present Perfect suggests the process is not complete and more actions are possible.

Examples:

  • The army has attacked that city five times.
  • I have had four quizzes and five tests so far this semester.
  • We have had many major problems while working on this project.
  • She has talked to several specialists about her problem, but nobody knows why she is sick.

Time Expressions with Present Perfect

When we use the Present Perfect it means that something has happened at some point in our lives before now. Remember, the exact time the action happened is not important.

 

Sometimes, we want to limit the time we are looking in for an experience. We can do this with expressions such as: in the last week, in the last year, this week, this month, so far, up to now, etc.

 

Examples:

  • Have you been to Mexico in the last year?
  • I have seen that movie six times in the last month.
  • They have had three tests in the last week.
  • She graduated from university less than three years ago. She has worked for three different companies so far.
  • My car has broken down three times this week.

NOTICE

“Last year” and “in the last year” are very different in meaning. “Last year” means the year before now, and it is considered a specific time which requires Simple Past. “In the last year” means from 365 days ago until now. It is not considered a specific time, so it requires Present Perfect.

Examples:

  • I went to Mexico last year.
    I went to Mexico in the calendar year before this one.
  • I have been to Mexico in the last year.
    I have been to Mexico at least once at some point between 365 days ago and now.

USE 2 Duration From the Past Until Now (Non-Continuous Verbs)

 

With Non-Continuous Verbs and non-continuous uses of Mixed Verbs, we use the Present Perfect to show that something started in the past and has continued up until now. “For five minutes,” “for two weeks,” and “since Tuesday” are all durations which can be used with the Present Perfect.

Examples:

  • I have had a cold for two weeks.
  • She has been in England for six months.
  • Mary has loved chocolate since she was a little girl.

Although the above use of Present Perfect is normally limited to Non-Continuous Verbs and non-continuous uses of Mixed Verbs, the words “live,” “work,” “teach,” and “study” are sometimes used in this way even though they are NOT Non-Continuous Verbs.

ADVERB PLACEMENT

The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.

Examples:

  • You have only seen that movie one time.
  • Have you only seen that movie one time?

ACTIVE / PASSIVE

Examples:

  • Many tourists have visited that castle. Active
  • That castle has been visited by many tourists. Passive

More About Active / Passive Forms

Engleza

Past Continuous Forms

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Past Continuous Forms

Positive Negative Question
  • I was singing.
  • You were singing.
  • We were singing.
  • They were singing.
  • He was singing.
  • She was singing.
  • It was singing.
  • I was not singing.
  • You were not singing.
  • We were not singing.
  • They were not singing.
  • He was not singing.
  • She was not singing.
  • It was not singing.
  • Was I singing?
  • Were you singing?
  • Were we singing?
  • Were they singing?
  • Was he singing?
  • Was she singing?
  • Was it singing?
Engleza

Past Continuous

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Past Continuous

FORM

[was/were + present participle]

Examples:

  • You were studying when she called.
  • Were you studying when she called?
  • You were not studying when she called.

Complete List of Past Continuous Forms

USE 1 Interrupted Action in the Past

 

Use the Past Continuous to indicate that a longer action in the past was interrupted. The interruption is usually a shorter action in the Simple Past. Remember this can be a real interruption or just an interruption in time.

Examples:

  • I was watching TV when she called.
  • When the phone rang, she was writing a letter.
  • While we were having the picnic, it started to rain.
  • What were you doing when the earthquake started?
  • I was listening to my iPod, so I didn’t hear the fire alarm.
  • You were not listening to me when I told you to turn the oven off.
  • While John was sleeping last night, someone stole his car.
  • Sammy was waiting for us when we got off the plane.
  • While I was writing the email, the computer suddenly went off.
  • A: What were you doing when you broke your leg?
    B: I was snowboarding.

USE 2 Specific Time as an Interruption

 

In USE 1, described above, the Past Continuous is interrupted by a shorter action in the Simple Past. However, you can also use a specific time as an interruption.

Examples:

  • Last night at 6 PM, I was eating dinner.
  • At midnight, we were still driving through the desert.
  • Yesterday at this time, I was sitting at my desk at work.

IMPORTANT

In the Simple Past, a specific time is used to show when an action began or finished. In the Past Continuous, a specific time only interrupts the action.

Examples:

  • Last night at 6 PM, I ate dinner.
    I started eating at 6 PM.
  • Last night at 6 PM, I was eating dinner.
    I started earlier; and at 6 PM, I was in the process of eating dinner.

USE 3 Parallel Actions

 

When you use the Past Continuous with two actions in the same sentence, it expresses the idea that both actions were happening at the same time. The actions are parallel.

Examples:

  • I was studying while he was making dinner.
  • While Ellen was reading, Tim was watching television.
  • Were you listening while he was talking?
  • I wasn’t paying attention while I was writing the letter, so I made several mistakes.
  • What were you doing while you were waiting?
  • Thomas wasn’t working, and I wasn’t working either.
  • They were eating dinner, discussing their plans, and having a good time.

USE 4 Atmosphere

In English, we often use a series of parallel actions to describe the atmosphere at a particular time in the past.

Example:

  • When I walked into the office, several people were busily typing, some were talking on the phones, the boss was yelling directions, and customers were waiting to be helped. One customer was yelling at a secretary and waving his hands. Others were complaining to each other about the bad service.

USE 5 Repetition and Irritation with “Always”

 

The Past Continuous with words such as “always” or “constantly” expresses the idea that something irritating or shocking often happened in the past. The concept is very similar to the expression “used to” but with negative emotion. Remember to put the words “always” or “constantly” between “be” and “verb+ing.”

Examples:

  • She was always coming to class late.
  • He was constantly talking. He annoyed everyone.
  • I didn’t like them because they were always complaining.

While vs. When

Clauses are groups of words which have meaning, but are often not complete sentences. Some clauses begin with the word “when” such as “when she called” or “when it bit me.” Other clauses begin with “while” such as “while she was sleeping” and “while he was surfing.” When you talk about things in the past, “when” is most often followed by the verb tense Simple Past, whereas “while” is usually followed by Past Continuous. “While” expresses the idea of “during that time.” Study the examples below. They have similar meanings, but they emphasize different parts of the sentence.

Examples:

  • I was studying when she called.
  • While I was studying, she called.

REMEMBER Non-Continuous Verbs / Mixed Verbs

It is important to remember that Non-Continuous Verbs cannot be used in any continuous tenses. Also, certain non-continuous meanings for Mixed Verbs cannot be used in continuous tenses. Instead of using Past Continuous with these verbs, you must use Simple Past.

Examples:

  • Jane was being at my house when you arrived. Not Correct
  • Jane was at my house when you arrived. Correct

ADVERB PLACEMENT

The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.

Examples:

  • You were just studying when she called.
  • Were you just studying when she called?

ACTIVE / PASSIVE

Examples:

  • The salesman was helping the customer when the thief came into the store. Active
  • The customer was being helped by the salesman when the thief came into the store. Passive

More About Active / Passive Forms