ascertain
gb/ˌæsɚtˈeɪn/ us/ˌæsɚtˈeɪn/
B2
英語
~ 5000
語義
0件の語義
動詞
formal
B2
action
1
Find out with certainty
To find out or learn something for sure after trying to get the facts.
用法パターン：
to ascertain [something]
よくある間違い：
Learners sometimes confuse 'ascertain' with 'assume' or 'guess', but 'ascertain' means to be sure after checking.
類義語
determine (Often interchangeable, but 'determine' is slightly broader and may refer to deciding rather than just finding out.)
|
verify ('Verify' emphasizes confirming information already believed or suspected.)
対義語
guess (Guessing means forming an opinion without certain knowledge, the opposite of ascertaining.)
|
assume (To take something as true without proof, which contrasts with confirming it through evidence.)
コロケーション
ascertain the facts
|ascertain the cause
|ascertain the truth
|ascertain whether
|ascertain the extent
テーマ
communication
|research
|investigation
|education
|core_vocabulary
例文
- The police are working to ascertain the cause of the accident.
- We need to ascertain whether she will be available for the meeting.
- The study aims to ascertain the effects of the new drug.
- He tried to ascertain the truth by interviewing all witnesses.
- The inspector will ascertain if all safety measures are in place.
学習者向け例文
- I called to ascertain the time of the meeting.
- The doctor will ascertain if you have an infection.
- They want to ascertain the reason for the delay.
- We must ascertain if it is safe to go inside.
文法
辞書形
ascertain
IPA
GB/ˌæsɚtˈeɪn/
US/ˌæsɚtˈeɪn/
音節・強勢
as - cer - tain （3音節）
Stress on 2nd syllable (cer)
活用形
Verb
- Base: ascertain
- 3rd Person Singular: ascertains
- Present Participle: ascertaining
- Past: ascertained
関連語
Forms
ascertains
verb
ascertaining
verb
ascertained
verb
Negative and opposite forms
uncertain
adjective B1
uncertainty
noun B1
Advanced or less common
ascertainable
adjective
ascertainment
noun
表現
ascertain the cause
1/ˌæsɚtˈeɪn ðə kˈɔz/
fixed phrase
formal
Find out why something happened
To find out the reason why something happened.
例文
- Engineers are trying to ascertain the cause of the power outage.
- We must ascertain the cause before we can fix the problem.
ascertain the facts
1/ˌæsɚtˈeɪn ðə fˈækts/
fixed phrase
formal
Find out the true details
To learn what is really true about something by checking carefully.
例文
- Before making a decision, we must ascertain the facts.
- The lawyer worked hard to ascertain the facts of the case.
ascertain the truth
1/ˌæsɚtˈeɪn ðə tɹˈuθ/
fixed phrase
formal
Find out what is true
To find out what is really true about something.
例文
- They interviewed several witnesses to ascertain the truth.
- It took months to ascertain the truth about what happened.