Monday, February 13, 2012

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.

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:
  • 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?
  • 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:
  • was studying while he was making dinner.
  • While Ellen was reading, Tim was watching television.
  • Were you listening while he was talking?
  • 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 bosswas 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

Past Perfect


FORM

[had + past participle]
Examples:
  • You had studied English before you moved to New York.
  • Had you studied English before you moved to New York?
  • You had not studied English before you moved to New York.

USE 1 Completed Action Before Something in the Past

The Past Perfect expresses the idea that something occurred before another action in the past. It can also show that something happened before a specific time in the past.
Examples:
  • had never seen such a beautiful beach before I went to Kauai.
  • I did not have any money because I had lost my wallet.
  • Tony knew Istanbul so well because he had visited the city several times.
  • Had Susan ever studied Thai before she moved to Thailand?
  • She only understood the movie because she had read the book.
  • Kristine had never been to an opera before last night.
  • We were not able to get a hotel room because we had not booked in advance.
  • A: Had you ever visited the U.S. before your trip in 2006?
    B: Yes, I had been to the U.S. once before.

USE 2 Duration Before Something in the Past (Non-Continuous Verbs)

With Non-Continuous Verbs and some non-continuous uses of Mixed Verbs, we use the Past Perfect to show that something started in the past and continued up until another action in the past.
Examples:
  • We had had that car for ten years before it broke down.
  • By the time Alex finished his studies, he had been in London for over eight years.
  • They felt bad about selling the house because they had owned it for more than forty years.
Although the above use of Past 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.

IMPORTANT Specific Times with the Past Perfect

Unlike with the Present Perfect, it is possible to use specific time words or phrases with the Past Perfect. Although this is possible, it is usually not necessary.
Example:
  • She had visited her Japanese relatives once in 1993 before she moved in with them in 1996.

MOREOVER

If the Past Perfect action did occur at a specific time, the Simple Past can be used instead of the Past Perfect when "before" or "after" is used in the sentence. The words "before" and "after" actually tell you what happens first, so the Past Perfect is optional. For this reason, both sentences below are correct.
Examples:
  • She had visited her Japanese relatives once in 1993 before she moved in with them in 1996.
  • She visited her Japanese relatives once in 1993 before she moved in with them in 1996.

HOWEVER

If the Past Perfect is not referring to an action at a specific time, Past Perfect is not optional. Compare the examples below. Here Past Perfect is referring to a lack of experience rather than an action at a specific time. For this reason, Simple Past cannot be used.
Examples:
  • She never saw a bear before she moved to Alaska. Not Correct
  • She had never seen a bear before she moved to Alaska. Correct

ADVERB PLACEMENT

The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
  • You had previously studied English before you moved to New York.
  • Had you previously studied English before you moved to New York?

ACTIVE / PASSIVE

Examples:
  • George had repaired many cars before he received his mechanic's license. Active
  • Many cars had been repaired by George before he received his mechanic's license. Passive

Simple Present


[VERB] + s/es in third person
Examples:
  • You speak English.
  • Do you speak English?
  • You do not speak English.

USE 1 Repeated Actions

Use the Simple Present to express the idea that an action is repeated or usual. The action can be a habit, a hobby, a daily event, a scheduled event or something that often happens. It can also be something a person often forgets or usually does not do.
Examples:
  • play tennis.
  • She does not play tennis.
  • Does he play tennis?
  • The train leaves every morning at 8 AM.
  • The train does not leave at 9 AM.
  • When does the train usually leave?
  • She always forgets her purse.
  • He never forgets his wallet.
  • Every twelve months, the Earth circles the Sun.
  • Does the Sun circle the Earth?

USE 2 Facts or Generalizations

The Simple Present can also indicate the speaker believes that a fact was true before, is true now, and will be true in the future. It is not important if the speaker is correct about the fact. It is also used to make generalizations about people or things.
Examples:
  • Cats like milk.
  • Birds do not like milk.
  • Do pigs like milk?
  • California is in America.
  • California is not in the United Kingdom.
  • Windows are made of glass.
  • Windows are not made of wood.
  • New York is a small city. It is not important that this fact is untrue.

USE 3 Scheduled Events in the Near Future

Speakers occasionally use Simple Present to talk about scheduled events in the near future. This is most commonly done when talking about public transportation, but it can be used with other scheduled events as well.
Examples:
  • The train leaves tonight at 6 PM.
  • The bus does not arrive at 11 AM, it arrives at 11 PM.
  • When do we board the plane?
  • The party starts at 8 o'clock.
  • When does class begin tomorrow?

USE 4 Now (Non-Continuous Verbs)

Speakers sometimes use the Simple Present to express the idea that an action is happening or is not happening now. This can only be done with Non-Continuous Verbs and certain Mixed Verbs.
Examples:
  • am here now.
  • She is not here now.
  • He needs help right now.
  • He does not need help now.
  • He has his passport in his hand.
  • Do you have your passport with you?

ADVERB PLACEMENT

The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
  • You only speak English.
  • Do you only speak English?

ACTIVE / PASSIVE

Examples:
  • Once a week, Tom cleans the car. Active
  • Once a week, the car is cleaned by Tom. Passive