could
gb/kˈʊd/ us/kˈʊd/
A2
英語
~ 100
語義
0件の語義
動詞
A2
relation
1
Express past ability or possibility
Used to say that someone was able to do something before, or that something is possible.
用法パターン：
[someone] could [verb]
よくある間違い：
Learners sometimes confuse 'could' for ability in the past with 'can' for present ability.
類義語
was able to (More formal and specific about past ability; not used for hypothetical situations)
対義語
could not (Indicates inability or impossibility)
コロケーション
could be
|could have
|could go
|could happen
|could see
テーマ
daily life
|communication
|core_vocabulary
例文
- When I was younger, I could run five miles without stopping.
- We could see the mountains from our hotel room.
- It could rain later, so bring an umbrella.
- She could speak three languages fluently.
- This plan could work if everyone helps.
学習者向け例文
- I could swim when I was six.
- We could play outside after lunch.
- He could read very fast.
- It could snow tomorrow.
- They could come to the party.
動詞
A2
relation
2
Make polite request or suggestion
Used to ask someone politely to do something or to give an idea.
用法パターン：
Could [someone] [verb]?
よくある間違い：
Learners may forget to use 'please' in polite requests with 'could'.
類義語
would you mind (Even more polite and formal)
コロケーション
could you please
|could we
|could I ask
|could you tell me
テーマ
communication
|social interaction
|core_vocabulary
例文
- Could you pass me the salt, please?
- Could we meet tomorrow afternoon?
- Could I borrow your book for a week?
- You could try restarting your computer.
- Could you tell me the time?
学習者向け例文
- Could you help me?
- Could we sit here?
- Could I use your phone?
- You could take the bus.
- Could you open the window?
動詞
B1
relation
3
Express uncertainty about events
Used to talk about something that might happen now or later.
用法パターン：
[something] could [verb]
よくある間違い：
Learners sometimes confuse 'could' with 'should' when giving advice versus expressing possibility.
類義語
might ('Might' is often interchangeable but sometimes suggests slightly less likelihood)
対義語
will (Indicates certainty rather than possibility)
コロケーション
could be true
|could happen soon
|could take a while
テーマ
daily life
|core_vocabulary
|communication
例文
- The train could be late due to the weather.
- This medicine could help you feel better.
- We could see some changes next year.
- It could be dangerous to go alone.
- The meeting could last for hours.
学習者向け例文
- It could rain today.
- This could be my book.
- He could come later.
- The bus could be late.
- She could get sick.
動詞
B1
relation
4
Express hypothetical situations
Used to say something is possible if something else happens first.
用法パターン：
[someone] could [verb] if [condition]
よくある間違い：
Learners sometimes forget to include the condition when using conditional 'could'.
類義語
would be able to (More explicit about conditional ability)
コロケーション
could win if
|could happen if
テーマ
communication
|core_vocabulary
例文
- I could help you if I had more time.
- We could win if we practice hard.
- She could pass the exam if she studied more.
- They could travel more if they saved money.
- He could fix it if he had the right tools.
学習者向け例文
- I could buy it if I had money.
- We could go if it is sunny.
- She could come if she finishes work.
- He could play if he feels better.
- They could eat if they are hungry.
文法
辞書形
could
IPA
GB/kˈʊd/
US/kˈʊd/
音節・強勢
could （1音節）
Stress on 1st syllable (could)
活用形
Verb
- Base: could
- 3rd Person Singular: coulds
- Present Participle: coulding
- Past: coulded
- Past Participle: coulded
関連語
Forms
coulds
verb
coulding
verb
coulded
verb
Related words
can
verb A1
Negative and opposite forms
couldn't
verb A2
表現
as cold as ice could be
1/ˈæz kˈoʊld ˈæz ˈaɪs kˈʊd bˈi/
idiom
literary
Extremely cold like ice
Very, very cold, like ice.
例文
- Her hands were as cold as ice could be after walking in the snow.
- The water was as cold as ice could be.
could have been
1/kˈʊd hˈæv bˈɪn/
fixed phrase
Possible but unrealized past situation
Used to say something was possible in the past but did not happen.
例文
- I could have been a doctor if I had studied harder.
- It could have been worse after the accident.
couldn't care less
1/kˈʊdənt kˈɛɹ lˈɛs/
idiom
informal
Not care at all about something
To not care at all about something; to have no interest in it.
例文
- I couldn't care less about what they think.
- She couldn't care less about fashion trends.
couldn't care less
2/kˈʊdənt kˈɛɹ lˈɛs/
idiom
informal
have no interest/concern at all
To not be interested in or worried about something at all.
例文
- I couldn't care less about sports.
- She couldn't care less what they think.