B2 Verb Moods 11 min read 보통

놓친 기회: 'Could have' 사용법 (미실현 가능성)

'could have'를 잘 익히면 과거의 선택이나 실현되지 않은 가능성에 대해 명확하게 소통할 수 있어요. 이건 마치 과거의 «선택지»와 «아쉬움»을 표현하는 «마법의 열쇠» 같아요.
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Grammar Rule in 30 Seconds

Use 'could have' to talk about things that were possible in the past but didn't actually happen.

  • Use 'could have' + Past Participle for missed opportunities. Example: 'I could have won.'
  • Use 'couldn't have' for things that were impossible. Example: 'I couldn't have known.'
  • Never use 'could of'—it is always 'could have' or the contraction 'could've'.
Subject + ☁️ could + ⏳ have + ✅ Verb (V3)

Overview

예전에 인스타그램에 올린 사진들을 넘겨보다가 «와, 저 형광 바지는 정말 입지 말았어야 했는데...»라고 생각한 적 있나요? 자, 오늘은 여러분이 *했어야 했던* 일(should have)에 대해 이야기하려는 게 아니에요. 여러분 인생의 «멀티버스(가상 세계)»에 대해 이야기해보려고 합니다.
바로 could have입니다. 이 문법은 과거에 가능했지만, 실제로 일어나지는 않은 일에 대해 말할 때 쓰는 도구예요. 콘서트를 갈 기회가 있었지만 그냥 집에 누워 넷플릭스를 보기로 했다거나, 밈(meme)을 보느라 정신 팔려서 비행기를 놓칠 뻔했지만 마지막 순간에 겨우 탔다거나 하는 상황들 말이죠.
이건 «만약 그랬다면 어땠을까?»의 문법입니다. 여러분이 선택하지 않은, 지나간 선택지의 유령 같은 것이죠.
영어의 세계에서는 이를 실현되지 않은 가능성(Unrealized Possibility)이라고 불러요. 말이 좀 어렵지만, 그냥 «열려 있었지만 여러분이 들어가지 않은 문»이라는 뜻이에요. 옛날 이야기를 하거나, 왜 줌(Zoom) 회의에 늦었는지 설명할 때, 혹은 나쁜 일이 일어나지 않아서 다행이라고 안도할 때 쓰기 딱 좋습니다.
휴대폰을 변기에 빠뜨릴 뻔했다고 상상해 보세요. «휴! 정말 대참사가 일어날(could have) 뻔했어!»라고 말하겠죠?
(게다가 아주 비싼 대참사 말이에요). 우리는 과거의 잠재력, 놓친 기회, 혹은 가끔은 '새벽 5시 운동을 계획대로 마쳤다면 내 인생이 어땠을까' 하는 백일몽을 꿀 때 이 문법을 사용합니다.

How This Grammar Works

could have를 여러분이 가지 않은 길만 보여주는 타임머신이라고 생각하세요. 영어에서는 기분이나 가능성을 나타내기 위해 could 같은 «조동사»를 사용합니다. 여기에 have와 '과거분사(done, seen, eaten 같은 동사의 3단 변화 형태)'를 더하면, 그 가능성을 과거로 밀어 넣게 됩니다.
지금 여러분이 *할 수 있는* 일에 대해 말하는 게 아니에요. 다른 결과가 나올 수도 있었던 과거의 특정 순간을 되돌아보는 것이죠. 마치 선택지가 세 가지 있는 비디오 게임과 같아요.
여러분은 A를 선택했지만, 나중에 보니 B를 선택했다면 골드를 더 많이 받을 수도 있었던(could have) 상황인 거죠. 중요한 건, could have는 항상 «그 일은 실제로 일어나지 않았다»는 점을 전제한다는 거예요. 만약 제가
난 2011년에 비트코인을 살 수도 있었어(I could have bought Bitcoin)
라고 말한다면, 여러분은 제가 지금 개인 섬에 사는 억만장자가 아니라는 걸 자동으로 알게 됩니다.
전 아마 그냥 여기 앉아서 여러분을 위해 이 가이드를 쓰고 있겠죠.
또한, 우리는 could have를 줄여서 could've라고 자주 써요. 발음은 «쿠드-어브(could-uv)»처럼 들리죠. 원어민들은 99%의 경우 이렇게 말합니다. 매번 could have라고 풀어서 말하면, 사람인 척하는 로봇처럼 들릴 수도 있어요. 솔직히 우린 공상과학 영화를 충분히 봐서 그 결말이 어떨지 잘 알잖아요? 일상적인 채팅에서는 축약형을 사용하세요!

Formation Pattern

1
이 «만약에» 기계를 만들려면 딱 세 가지 재료만 있으면 됩니다. 사워도우 빵 레시피를 따르는 것보다 쉬우니까 걱정 마세요.
2
주어 (I, you, he, she, it, we, they)로 시작합니다.
3
마법의 문구 could have (또는 축약형 could've)를 넣습니다.
4
메인 동사의 과거분사(Past Participle)로 마무리합니다.
5
구조: [주어] + [could have] + [과거분사]
6
긍정: "You could've won the game!" (네가 이길 수도 있었는데! 실제로는 안 이김).
7
부정: "I couldn't have known." (난 알 수 없었어. 아는 게 불가능했음).
8
의문:
Could you have helped me?
(나를 도와줄 수 있었니? 실제로는 안 도와줬지만).
9
꿀팁: he, she, it이 주어라도 have는 절대 has로 바뀌지 않아요.
She could have gone
이라고 하지,
She could has gone
이라고 하지 않습니다. 조동사 could가 모든 걸 제자리에 고정해 주거든요. have 동사를 지켜주는 보디가드라고 생각하세요.

When To Use It

이 문법을 주머니에서 꺼내 써야 할 주요 상황 세 가지는 다음과 같습니다.
  • 후회 또는 놓친 기회: 과거에 대해 조금 슬프거나 성찰하고 싶을 때 사용하세요.
    I could have studied harder for that exam.
    (그 시험 공부를 더 열심히 할 수도 있었는데. 현실은 고양이가 파쿠르 하는 틱톡 영상을 6시간 동안 봤지만요).
  • 안도(부정적인 가능성): 나쁜 일이 일어날 뻔했지만 운 좋게 피했을 때 사용하세요.
    You could have fallen!
    (떨어질 뻔했잖아! 안 떨어져서 다행이에요. 병원 밥은 정말 맛없거든요).
  • 과거에 대한 추측: 무슨 일이 일어났는지 확실하진 않지만, 가능성을 점쳐볼 때 사용합니다.
    Where is Sarah? She could have missed her bus.
    (사라는 어디 있지? 버스를 놓쳤을 수도 있어).
또한 예의 바르게 표현할 때도 좋습니다. 누군가 무거운 박스를 들고 끙끙거리고 있다면,
I could have helped you with that!
(내가 도와줄 수도 있었는데!)라고 말할 수 있죠. 그 순간은 지났지만, 도울 의향이 있었다는 걸 보여주니까요. 다만 상대방이 이미 5층까지 다 옮긴 다음에 말하진 마세요. 그건 그냥 짜증을 유발할 뿐이니까요.

Common Mistakes

  • Could Of의 함정: 이건 원어민들도 정말 많이 하는 실수예요! could've 발음이 could of처럼 들리기 때문에 사람들이 그렇게 적곤 하죠. 절대 could of라고 쓰지 마세요. 문법적으로 '범죄'입니다. 여러분이 그렇게 쓸 때마다 어디선가 문법 선생님이 눈물을 흘리고 계실 거예요.
  • 틀린 동사 형태 사용: 항상 과거분사(past participle)를 사용하세요.
    I could have go
    나
    I could have went
    라고 하지 마세요.
    I could have gone
    이 맞습니다. 동사의 '세 번째 형태' 규칙을 기억하세요.
  • 'Have' 빼먹기: 어떤 학습자들은 I could gone이라고 말합니다. 이건 미래에서 온 비밀 언어처럼 들려요. 가능성을 과거와 연결하려면 그 have가 꼭 필요합니다.
  • 실제로 일어난 일에 사용하기: 만약 진짜로 상점에 갔다면,
    I could have gone to the store
    라고 말하지 마세요. 오직 «만약에» 시나리오에만 사용하세요.

Contrast With Similar Patterns

  • Could have vs. Should have: 이게 가장 큰 차이점이에요. Could have는 '가능했다'는 뜻이고, Should have는 '하는 게 좋았을 텐데(도리나 의무)'라는 뜻입니다.
  • Could have:
    I could have eaten the whole cake.
    (케이크를 다 먹을 능력이 있었지만, 먹지는 않았다).
  • Should have:
    I should have eaten the whole cake.
    (케이크가 정말 맛있어서 안 먹은 걸 후회한다).
  • Could have vs. Can: Can은 현재, Could have는 과거입니다.
  • I can swim
    (난 지금 수영할 수 있다).
  • I could have swam across that lake
    (그때 호수를 수영해서 건널 기회가 있었지만, 대신 보트를 탔다).
  • Could have vs. Must have: Must have는 무언가가 일어났다고 거의 100% 확신할 때 사용합니다.
  • She must have forgotten
    (그녀가 잊어버린 게 틀림없어).
  • She could have forgotten
    (그녀가 잊어버렸을 수도 있고, 아니면 그냥 휴대폰 배터리가 나간 걸 수도 있어).

Quick FAQ

Q

could have와 might have는 같은가요?

거의 비슷해요! 둘 다 과거의 가능성을 나타냅니다. Could have는 보통 여러분에게 능력이나 기회가 있었다는 점을 강조하고, might have는 단순한 우연이나 가능성에 더 가깝습니다.

Q

미래에 대해 could have를 쓸 수 있나요?

아니요. 미래의 가능성에는 그냥 could를 쓰세요.

I could go tomorrow.
could have는 엄격하게 과거를 되돌아볼 때만 씁니다.

Q

왜 사람들은 coulda라고 하나요?

그건 아주 격식 없는 슬랭이에요. 친구들과 아주 빨리 말할 때 쓰는 표현이죠.

I coulda been a star! (내가 스타가 될 수도 있었는데!)
하지만 줌 면접 같은 데서는 쓰지 마세요.

Q

불가능한 일에 couldn't have를 써도 되나요?

네! "He couldn't have stolen the cookies; he was with me the whole time! (그가 쿠키를 훔쳤을 리가 없어. 내내 나랑 같이 있었거든!)" 친구(또는 고양이)를 변호할 때 아주 좋습니다.

Forming the Past Modal

Subject Modal Auxiliary Past Participle (V3)
I / You / He / She
could
have
done
It / We / They
could
have
seen
I / You / He / She
couldn't
have
known
It / We / They
couldn't
have
been

Contractions

Full Form Contraction Pronunciation Hint
could have
could've
sounds like 'could-uv'
could not have
couldn't have
sounds like 'couldnt-uv'
could not
couldn't
standard past negative

Meanings

Expresses that something was possible in the past, or that someone had the ability to do something, but they did not do it.

1

Unrealized Opportunity

A choice was available but not taken.

“We could have taken the train, but we drove instead.”

“She could have been a doctor if she hadn't quit school.”

2

Past Speculation

Guessing about what was possible in a past situation.

“He could have gotten lost in the city.”

“The keys could have fallen out of your pocket.”

3

Past Impossibility (Negative)

Expressing that something was not possible, even if we tried.

“I couldn't have finished it without your help.”

“He couldn't have been at the party; he was with me.”

Reference Table

Reference table for 놓친 기회: 'Could have' 사용법 (미실현 가능성)
용법 의미 예시
Unrealized Possibility
과거에 가능했지만 실제로 일어나지 않은 일
`I could have gone.`
Regret/Criticism
과거의 행동/무행동에 대한 아쉬움이나 비난을 표현
`You could have helped.`
Past Ability (unused)
능력이 있었지만 사용하지 않았음
`She could have played guitar.`
Third Conditional
다른 과거 사건에 기반한 가상의 과거 결과
`If I had known, I could have come.`
Negative Form
과거에 불가능했던 일
`I couldn't have known.`

격식 수준 스펙트럼

격식체
The company could have implemented a more robust strategy.

The company could have implemented a more robust strategy. (Work performance)

중립
We could have done a better job on the project.

We could have done a better job on the project. (Work performance)

비격식체
We could've done way better.

We could've done way better. (Work performance)

속어
Man, we coulda crushed that.

Man, we coulda crushed that. (Work performance)

Could Have: 실현되지 않은 과거의 가능성

Could Have

형태

  • 주어 + could + have + V3 She could have called.
  • 부정형: couldn't have + V3 He couldn't have known.

주요 용법

  • 놓친 기회 I could have gone.
  • 후회/비판 You could have warned me.
  • 사용되지 않은 능력 She could have learned.

흔한 실수

  • could of ❌ instead of could have
  • V1 또는 V2 ❌ instead of V3 (Past Participle)

조건문과의 관계

  • 3형 조건문 If I had known, I could have helped.

Could Have vs. Should Have vs. Would Have 비교

Could Have (과거 가능성/능력)
과거 가능성/능력 I could have bought it (had the chance, didn't).
실현되지 않은 잠재력 She could have been a doctor.
Should Have (과거 의무/더 나은 선택)
과거 의무/좋은 생각 I should have studied (it was my duty/a good idea).
후회/비판 You should have told me.
Would Have (가상의 과거 결과)
가상의 과거 결과 (3형 조건문) If I had known, I would have come.
과거의 의지 (미실현) I would have helped, but I couldn't.

'Could Have'는 언제 사용하나요?

1

과거에 대해 이야기하고 있나요?

YES
다음 단계로 이동하세요.
NO
이 규칙은 해당되지 않습니다. 'could' (현재/미래 가능성)를 고려해 보세요.
2

무언가가 가능했지만 (능력이나 기회가 있었지만) 실제로 *일어나지 않았나요*?

YES
`could have + 과거분사 (V3)`를 사용하세요.
NO
다음 단계로 이동하세요.
3

과거에 *일어나지 않았지만 일어날 수도 있었던* 행동에 대해 후회나 가벼운 비판을 표현하고 있나요?

YES
`could have + 과거분사 (V3)`를 사용하세요.
NO
'might have' (더 약한 가능성) 또는 'should have' (의무/좋은 생각)를 고려해 보세요.

'Could Have'의 흔한 시나리오

😔

일상의 후회

  • • I could have saved more money.
  • • You could have called me back.
🚪

놓친 기회

  • • We could have taken that trip.
  • • She could have gotten the job.
💬

3형 조건문 맥락

  • • If I had studied, I could have passed.
  • • If she had left, he could have been angry.
💪

사용되지 않은 능력

  • • He could have been a great musician.
  • • I could have learned to code.
무료 가입하고 전체 설명 읽기

수준별 예문

1

I could run fast when I was young.

I was able to run fast.

2

She could not come to the party.

She was not able to come.

3

Could you see the moon?

Were you able to see it?

4

They could speak English.

They had the skill.

1

I could have bought that shirt.

I had the money, but I didn't buy it.

2

We could have won the game.

We were close, but we lost.

3

You could have told me!

Why didn't you tell me?

4

He could have been late.

Maybe he was late.

1

I could have gone to university, but I started working.

I had the opportunity but chose work.

2

It could have been a mistake.

Perhaps it was a mistake.

3

She couldn't have known about the party.

It was impossible for her to know.

4

They could have finished earlier if they tried.

They had the capacity to finish fast.

1

If I'd had more time, I could have done a better job.

With more time, better quality was possible.

2

You could have at least offered to help!

I am annoyed you didn't offer.

3

The accident could have been much worse.

It was possible for more damage to occur.

4

He couldn't have stolen the money; he was in jail.

It is logically impossible.

1

The project could have been salvaged had the management intervened.

Intervention would have made success possible.

2

I could have sworn I left my keys on the table.

I was very sure, but I might be wrong.

3

Such a discovery could not have been made without modern technology.

Modern tech was a necessary condition.

4

We could have been looking at a total economic collapse.

That was a realistic, though avoided, possibility.

1

One could have argued that the treaty was doomed from the outset.

A valid argument existed for its failure.

2

The sheer audacity of the plan could have only been matched by its failure.

Only failure was as great as the audacity.

3

He couldn't have been more helpful if he'd tried.

He was extremely helpful.

4

The implications could have reverberated for decades.

Long-term effects were possible.

혼동하기 쉬운

Missed Chances: How to use 'Could have' (Unrealized Possibility) 대 Could have vs. Should have

Learners use 'could' when they mean 'it was a good idea' (should).

Missed Chances: How to use 'Could have' (Unrealized Possibility) 대 Could have vs. Must have

Using 'could' for a logical certainty.

자주 하는 실수

✗

I could to go.

✓

I could go.

Modal verbs never take 'to'.
✗

I can go yesterday.

✓

I could go yesterday.

Use 'could' for past ability.
✗

I could have go.

✓

I could have gone.

You must use the past participle (V3).
✗

She could has won.

✓

She could have won.

Modal auxiliaries always use 'have', never 'has'.
✗

I could of seen it.

✓

I could have seen it.

Phonetic error: 'of' is never used here.
✗

I could have win.

✓

I could have won.

Forgetting the irregular past participle.
✗

He couldn't have been there, could he?

✓

He couldn't have been there, could he?

Actually correct, but learners often use 'mustn't have' which is rare/incorrect for deduction.

문장 패턴

I could have ___, but I ___.

You could have at least ___!

If I had known, I could have ___.

Real World Usage

Job Interview common

I could have stayed at my last job, but I wanted a new challenge.

Texting Friends very common

U could've told me u were leaving!!

Police Report occasional

The suspect could have entered through the back window.

Sports Commentary constant

He could've scored if he'd passed the ball!

Doctor's Office common

This condition could have been prevented with early screening.

Travel/Airlines common

We could have missed our connection due to the delay.

무료 가입하고 모든 예문 보기
💡

소리에 귀 기울여 보세요!

빨리 말할 때는 'could have'가 'could've'처럼 들려서 'could of'로 착각하기 쉬워요. 'v' 소리에 집중해서 'of'와 구별하는 연습을 해보세요. "In fast speech, could have often sounds like could've which is easily mistaken for could of."
⚠️

'should have'와 헷갈리지 마세요!

'could have'는 행동하지 않은 가능성을 나타내지만, 'should have'는 하지 않은 더 나은 선택이나 의무를 말해요. 뉘앙스를 정확히 전달하려면 신중하게 골라야 해요.
You could have gone to the party (it was possible), but you should have stayed home and studied (it was a better choice).
🎯

3형 조건문을 연습해 보세요!

'could have'는 3형 조건문 ('If + 과거완료, would/could/might + have + V3')에서 빛을 발해요. 이 구조를 익히면 가상의 과거 상황을 유창하게 말할 수 있게 될 거예요.
If I had known, I could have come.
🌍

온라인에서는 어조에 신경 쓰세요!

'could have'는 중립적이지만, 온라인이나 문자 메시지에서 누군가의 과거 행동을 비판할 때 쓰면 가끔 너무 직설적으로 들릴 수 있어요. 직접적인 비판이 목적이 아니라면 'maybe'나 'it seems' 같은 표현으로 부드럽게 만들어 보세요.
You could have told me earlier.
💡

'갈림길'을 상상해 보세요!

'could have'를 사용할 때는 과거에 자신이나 다른 사람이 선택의 순간에 있었던 상황을 떠올려 보세요. 한 길은 선택되었고, 'could have'는 선택되지 않은 다른 길을 묘사하는 거예요.
I could have taken the bus, but I walked instead.

Smart Tips

Use 'You could have...' followed by a small action. It sounds less aggressive than a direct 'You didn't...'

You didn't call me. → You could have called me.

Mentally correct it to 'could have'. This will help you avoid picking up bad habits from native speakers.

I could of gone. → I could have gone.

Use 'could have' for multiple possibilities. If you only have one theory, use 'must have'.

He must have gone to the store (but maybe the gym). → He could have gone to the store, or he could have gone to the gym.

Always double-check the V3 form. 'Could have saw' is a common error; it must be 'could have seen'.

I could have saw it. → I could have seen it.

발음

/kʊdəv/

The Schwa Reduction

In 'could have', the 'have' is almost never stressed. It reduces to a schwa sound /əv/.

/kʊd/

The 'L' is Silent

The 'l' in 'could' is never pronounced.

Criticism Intonation

You could have TOLD me! (Stress on 'told')

Expresses annoyance.

암기하기

기억법

COULD HAVE: C-hance O-mitted U-nder L-ikely D-esires. (A chance you didn't take).

시각적 연상

Imagine a 'Sliding Doors' scenario where you see two versions of yourself: one who did the action and one who didn't. 'Could have' is the ghost version of you.

Rhyme

If it could have been but was not so, use 'could have' to let us know!

Story

John was late for his flight. He could have taken a taxi, but he took the bus. He could have arrived on time, but the bus broke down. Now he's at the airport, thinking about what could have been.

Word Web

could'veunrealizedpossibilityV3regretspeculationcounterfactual

챌린지

Write down three things you 'could have' done this morning but chose not to (e.g., I could have eaten a donut).

문화 노트

Often used for 'polite reproach' to avoid direct confrontation. Saying 'You could have mentioned it' is a very British way of saying 'I am angry you didn't tell me.'

The phrase 'Coulda, woulda, shoulda' is a common idiom used to tell someone to stop complaining about the past because it can't be changed.

In sports commentary, 'could have' is used constantly to analyze 'what if' moments in a game.

From Old English 'cuðe' (past of 'cunnan' - to know/be able).

대화 시작하기

“

What is something you could have done differently in your last job?

“

If you had been born in a different country, how could your life have been different?

“

Think of a famous movie. How could the ending have been better?

“

What's a skill you could have learned as a child but didn't?

일기 주제

Write about a 'near miss' you experienced. What could have happened?
Reflect on a major life decision. What other paths could you have taken?
Critique a historical event. How could the leaders have acted differently?

자주 하는 실수

Incorrect

정답

Incorrect

정답

Incorrect

정답

Incorrect

정답

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Test Yourself

문장을 완성하기 위해 올바른 형태를 선택하세요.

If I had known about the sale, I ___ that new laptop.

✓ Correct! ✗ Not quite. Correct answer: could have bought
3형 조건문에서는 가상의 과거 결과를 표현하기 위해 could have + 과거분사를 사용합니다. Could of는 흔한 실수입니다.
문장에서 틀린 부분을 찾아 고치세요. Error Correction

Find and fix the mistake:

She could have went to the gym, but she chose to relax.

✓ Correct! ✗ Not quite. Correct answer: She could have gone to the gym, but she chose to relax.
could have 다음에는 동사의 과거분사(V3) 형태가 와야 합니다. 'go'의 과거분사는 'gone'이지 'went'가 아닙니다.
실현되지 않은 과거의 가능성을 올바르게 표현한 문장을 고르세요. 객관식

Choose the correct sentence:

✓ Correct! ✗ Not quite. Correct answer: He could have won the race, but he tripped near the finish line.
올바른 구조는 could have 뒤에 동사의 과거분사(V3)가 오는 것입니다. 'won'은 'win'의 V3입니다.
단어들을 배열하여 문법적으로 올바른 문장을 만드세요. Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: You could have warned me
could have의 구조는 주어 + could + have + 과거분사 (V3) + 목적어입니다.

Score: /4

연습 문제

8 exercises
Complete the sentence with 'could have' and the correct form of the verb in brackets.

I ___ (buy) that house, but it was too expensive.

✓ Correct! ✗ Not quite. Correct answer: could have bought
We use 'could have' + the past participle 'bought'.
Find the mistake in the sentence. Error Correction

Find and fix the mistake:

She could of been a famous singer.

✓ Correct! ✗ Not quite. Correct answer: could of
It should be 'could have' or 'could've'.
Which sentence expresses that something was impossible? 객관식

Select the correct option.

✓ Correct! ✗ Not quite. Correct answer: I couldn't have gone.
'Couldn't have' expresses past impossibility.
Rewrite the sentence using 'could have'. Sentence Transformation

It was possible for him to win, but he didn't.

✓ Correct! ✗ Not quite. Correct answer: He could have won.
'Could have won' replaces 'It was possible for him to win'.
Fill in the missing part of the dialogue. Dialogue Completion

A: Why didn't you call me? B: I'm sorry, I ___ (lose) my phone.

✓ Correct! ✗ Not quite. Correct answer: could have lost
B is speculating about a past possibility.
Which of these is a 'missed opportunity'? Grammar Sorting

Pick the correct sentence.

✓ Correct! ✗ Not quite. Correct answer: I could have studied more for the test.
This shows an action that was possible but not done.
Is this rule true or false? True False Rule

You can use 'could has' if the subject is 'he' or 'she'.

✓ Correct! ✗ Not quite. Correct answer: False
It is always 'could have', regardless of the subject.
Put the words in the correct order. Sentence Building

have / they / told / could / us

✓ Correct! ✗ Not quite. Correct answer: They could have told us.
The order is Subject + could + have + V3.

Score: /8

Practice Bank

11 exercises
'could have'의 올바른 형태로 문장을 완성하세요. 빈칸 채우기

The concert tickets were expensive, but I ___ them if I had saved more.

✓ Correct! ✗ Not quite. Correct answer: could have afforded
문법적 오류를 찾아 수정하세요. Error Correction

If she had taken the earlier flight, she could of arrived on time.

✓ Correct! ✗ Not quite. Correct answer: If she had taken the earlier flight, she could have arrived on time.
실현되지 않은 과거 능력을 올바르게 표현한 문장을 선택하세요. 객관식

Which sentence is correct?

✓ Correct! ✗ Not quite. Correct answer: He could have spoken French fluently if he hadn't stopped practicing.
다음 문장을 영어로 번역하세요. 번역

Translate into English: 'Podríamos haber evitado el problema si hubiéramos sido más cuidadosos.'

✓ Correct! ✗ Not quite. Correct answer: ["We could have avoided the problem if we had been more careful.","We could've avoided the problem if we'd been more careful."]
단어들을 재배열하여 일관성 있는 문장을 만드세요. Sentence Reorder

Arrange these words into a sentence:

✓ Correct! ✗ Not quite. Correct answer: I couldn't have known about the change
문장의 앞부분과 뒷부분을 올바르게 연결하세요. Match Pairs

Match the clauses to complete the sentences correctly:

✓ Correct! ✗ Not quite. Correct answer: matched
대화를 완성하기 위해 가장 적절한 옵션을 선택하세요. 빈칸 채우기

A: Why didn't you join us last night? B: I ___ to the party, but I was exhausted.

✓ Correct! ✗ Not quite. Correct answer: could have come
`could have`와 관련된 오류를 수정하세요. Error Correction

If you had warned him, he could have avoid the accident.

✓ Correct! ✗ Not quite. Correct answer: If you had warned him, he could have avoided the accident.
문장의 영어 번역을 제공하세요. 번역

Translate into English: 'Ella podría haber aceptado la oferta de trabajo.'

✓ Correct! ✗ Not quite. Correct answer: ["She could have accepted the job offer.","She could've accepted the job offer."]
단어들을 재배열하여 올바른 문장을 만드세요. Sentence Reorder

Arrange these words:

✓ Correct! ✗ Not quite. Correct answer: We could have gone earlier if we had
`could have`와 함께 올바른 동사 형태를 사용한 문장을 고르세요? 객관식

Select the correct sentence:

✓ Correct! ✗ Not quite. Correct answer: He could have eaten the whole cake.

Score: /11

자주 묻는 질문 (8)

They are often interchangeable for speculation. However, `could have` suggests a stronger ability or possibility, while `might have` suggests a weaker chance.

Generally, no. In formal essays or business reports, use the full `could have`.

Because the contraction `could've` sounds exactly like 'could of'. It's a common spelling mistake based on sound.

No, `could have` is strictly for the past. For the future, use `could` or `might`.

It's an idiom meaning 'I was as happy as possible.' It uses the negative to show that more happiness was impossible.

Not always. It can also mean relief (`We could have died!`) or simple speculation (`He could have forgotten`).

Put 'could' before the subject: `Could he have known?`

Yes! It's often the result clause: `If I had seen him, I could have spoken to him.`

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

무료 가입하고 연습하기

In Other Languages

Spanish high

Podría haber + participio

Spanish speakers sometimes use the imperfect 'podía' where English requires 'could have'.

French high

Aurait pu + infinitif

French uses the infinitive after 'pu', while English uses the past participle.

German moderate

Hätte ... können

The word order is very different, with verbs often moving to the end.

Japanese low

...できたかもしれない

Japanese doesn't have a single 'modal perfect' structure like English.

Arabic moderate

كان بإمكانه أن...

Arabic uses a noun-based structure for ability.

Chinese low

本来可以...

Chinese relies on adverbs rather than verb conjugation to show the past.

Learning Path

Prerequisites

Previous
과거에 대한 강한 불신 (Can't Have + V3)
Next
Ought To: 조언 및 의무

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