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레이첼
|
2008-10-23 17:36

1.확실한 과거시제-과거에무엇을 했었니?도 되구요,시간이 정확하게 나오는 경우 그시간에 뭐했니?도 되구요,

예문을 보면요,What did you do last night? I din't do anything

what do you do?가 뭐해먹고 사냐는 거잖아요.

2.너 뭐했니?과거 진행으로보심되는데요,요것두 예문으로볼께요.I was walking home when i met Dave.(=in the middle of walking home)집으로 가던 도중 데이브를 만났을때 쓰는거예요

-또다른 예문-Matt burned his hand while he was cooking dinner.그가 요리를 하던 도중 손을 데인거예요..

아시겠죠?^^

3번은요,현재완료구요-너 뭐하고 있었니정도로 해석할수 있겠는데요,과거에 했던게 현재에도 계속 지속되고 있을때 말하죠. 예를 들어 He told me his name,but I've forgotten it.(I can't remember it now)^^
현재까지 그 사람이름이 기억이 안나니 현재완료를 써야겠죠?이해가 잘되셨으면 좋겠네요.

버들움
|
2008-10-22 14:25

다음을 참고로 하세요.

The present perfect is used when the time period has not finished:

I have seen three movies this week.

(This week has not finished yet.)

The present perfect is often used when the time is not mentioned:

Gerry has failed his exam again.

The present perfect is often used when the time is recent:

Ikuko has just arrived in Victoria.

The present perfect is often used with for and since.

Greg has lived here for 20 years.

Greg has lived here since 1978.

The present perfect is formed like this:

have plus past participle

When you are sure that you understand the topic, you can go on to the exercises.

=================================================================

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