doubtless
doubtless — 形容詞
- doubtlesspositive
- more doubtlesscomparative
- most doubtlesssuperlative
1. used about a fact, conclusion, or situation that is so clearly true that no reas
確定無疑
完全確定，無可懷疑的
used about a fact, conclusion, or situation that is so clearly true that no reasonable person could question it.
After the DNA evidence confirmed a match, the suspect's guilt was doubtless.
在 DNA 比對確認吻合後，嫌犯的罪行已無可懷疑。
predicative: be + doubtless
The ancient scroll's authenticity was doubtless once the lab dated it to the eighth century.
實驗室確認這份古老卷軸的年代可追溯到八世紀後，其真實性便無疑了。
subject + be + doubtless
For the valley farmers, the link between the drought and the failed harvest was doubtless.
對山谷裡的農民來說，乾旱與歉收之間的關聯是無疑的。
The historian considered the letter's origin doubtless after examining the ink and handwriting.
歷史學家在檢視了墨水和筆跡後，認為這封信的來源確定無疑。
consider + object + doubtless (object complement)
- guilt + was doubtless
- authenticity + was doubtless
- connection + was doubtless
- origin + was doubtless
- undoubted
the more common attributive form; placed before a noun
- unquestionable
emphasises that the truth is beyond any challenge
- certain
more general and less formal; used in everyday speech
文法句型
be + doubtless
用法筆記
This adjective is used predicatively (after 'be') or as an object complement. It is rarely placed before a noun in modern English.
常見錯誤
doubtless — 副詞
1. used to emphasise that you are completely sure that something is true or will ha
肯定；無疑
強調確信某事屬實或一定發生
used to emphasise that you are completely sure that something is true or will happen; with no doubt at all.
Doubtless you have heard about the plans to build a new community centre.
你肯定已經聽說了興建新社區中心的計畫。
sentence adverb at start of clause
Anyone who tasted the soup would doubtless agree that it needed more salt.
任何喝過這碗湯的人都肯定會同意它需要多加一點鹽。
position after modal verb 'would'
The results of the investigation will doubtless be published in next month's safety report.
調查結果肯定會刊登在下個月的安全報告中。
will + doubtless + be + past participle
Doubtless the school administration will inform parents before making any major changes.
學校行政部門在做出重大改變之前，肯定會通知家長。
- will + doubtless
- would + doubtless
- doubtless + you have
- undoubtedly
interchangeable in most cases; very similar in formality
- without doubt
longer phrase used for extra emphasis
- certainly
more common in everyday speech; slightly less formal
- uncertainly
suggests lack of confidence; less common
- doubtfully
with hesitation or scepticism
文法句型
Doubtless + [clause]
subject + will/would + doubtless + [verb]
用法筆記
Typically used as a sentence adverb at the beginning of a statement, or placed after a modal verb like 'will' or 'would'. This sense expresses 100% certainty, unlike the second adverb sense.
常見錯誤
2. very likely; used when you think something is probably true or will probably hap
很可能；大概
表示很有可能，但非絕對確定
very likely; used when you think something is probably true or will probably happen, while acknowledging you cannot be absolutely certain.
Doubtless the hotel will be fully booked during the holiday weekend, so reserve early.
那家旅館在假日週末很可能會客滿，所以你應該提早預訂。
doubtless + will expressing a likely future event
The documentary is doubtless fascinating for science fans, though some may find it too technical.
這部紀錄片對科學迷來說很可能很有趣，但有些觀眾可能會覺得太專業。
Doubtless many families will choose to travel during the school break.
很多家庭很可能會選擇在學校放假期間出遊。
sentence adverb with prediction about behaviour
Eleni will doubtless feel nervous before her first piano recital, but she has practised hard.
Eleni 在她的第一場鋼琴獨奏會前很可能會感到緊張，但她已經努力練習過了。
will + doubtless + verb expressing a likely feeling
- doubtless + will
- is + doubtless + adjective
- doubtless + many + noun
- probably
more common; slightly less formal; same level of certainty
- in all likelihood
more formal; used in written English
- most likely
conversational; common in everyday speech
- unlikely
opposite in probability; expresses low chance of happening
文法句型
Doubtless + [clause]
subject + will/would + doubtless + [verb]
用法筆記
Distinguish from the first adverb sense: here the speaker leaves room for the possibility of being wrong. Often used when making a prediction or assumption about someone's feelings, behaviour, or a future event.
常見錯誤
同根字
- doubt名詞B1
- doubt動詞B1
- doubtful形容詞B2
- doubtfully副詞B2
- undoubtedly副詞B2
- undoubted形容詞C1
常見搭配
副詞搭配
- doubtless + certainly (rare — redundant)
常用片語
- without doubt (cross-sense equivalent phrase)