certain的讀音是：英['s__tn]。certain的詳盡釋義是adj.(形容詞)肯定的，壹定會的確定的某，某種，某些確信的確鑿的，無疑的，可靠的，有把握的某種程度的確實的可靠的。certain的意思是adj.確定的；肯定的；某事；某人；某種；（與人名連用；表示不認識此人）壹位叫...；特定的；輕微的；微小的；pron.某些；某幾個。
壹、詳盡釋義點此查看certain的詳細內容
adj.(形容詞)肯定的，壹定會的確定的某，某種，某些確信的確鑿的，無疑的，可靠的，有把握的某種程度的確實的可靠的pron.(代詞)某些，某幾個，某個adv.(副詞)壹定，確實地二、雙解釋義
adj.(形容詞)[P]無疑的,肯定的 without any doubt; sure[A]某,某些 one or some that can be named三、詞典解釋
肯定（BEING SURE）
1.肯定的;有把握的;毫無疑問的
If you arecertain about something, you firmly believe it is true and have no doubt about it. If you are notcertain about something, you do not have definite knowledge about it.
e.g. She's absolutelycertain she's going to make it in the world...
她堅信自己會出人頭地。
e.g. We are notcertain whether the appendix had already burst or not...
我們不敢肯定闌尾是否已經破裂。
2.必然的;必定的;肯定的
If you say that something iscertain to happen, you mean that it will definitely happen.
e.g. However, the scheme iscertain to meet opposition from fishermen's leaders...
然而，這項計劃壹定會遭到漁民領袖的反對。
e.g. It's notcertain they'll accept the Front's candidate if he wins...
即便來自陣線的候選人獲勝，他們能否接受他還說不準。
3.確鑿的；無疑的
If you say that something iscertain, you firmly believe that it is true, or have definite knowledge about it.
e.g. One thing iscertain, both have the utmost respect for each other...
有壹點可以肯定，那就是雙方都非常尊重對方。
e.g. It iscertain that Rodney arrived the previous day.
羅德尼肯定是頭天到的。
4.確實的;肯定的
If you havecertain knowledge, you know that a particular thing is true.
e.g. He had been there four times to mycertain knowledge.
我確定他去過那兒4次。
5.確切地;無疑地
If you know somethingfor certain, you have no doubt at all about it.
e.g. She couldn't know what time he'd go, or even forcertain that he'd go at all...
她不知道他何時走，就連他到底走不走都說不準。
e.g. Hill had to find out forcertain.
希爾得弄個清楚。
6.確保；保證
If youmake certain that something is the way you want or expect it to be, you take action to ensure that it is.
e.g. Firstly, they must makecertain that their pension needs are adequately catered for...
首先，他們得確保他們能獲得足夠的養老金。
e.g. To make extracertain, a police helicopter kept watch from the skies.
為確保萬無壹失，壹架警用直升機壹直在空中警戒。
表示數量（REFERRING AND INDICATING AMOUNT）
1.某個;特定的
You usecertain to indicate that you are referring to one particular thing, person, or group, although you are not saying exactly which it is.
e.g. There will becertain people who'll say 'I told you so!'...
壹定有人會說：“我怎麽跟妳說來著！”
e.g. You owe acertain person a sum of money...
妳欠某人壹筆錢。
2.某些;壹些
When you refer tocertain of a group of people or things, you are referring to some particular members of that group.
certain
e.g. They'll have to give up completely oncertain of their studies.
他們將不得不徹底放棄某些研究。
3.(用於人名前，表示不認識或了解很少)某個
You can usea certain before the name of a person in order to indicate that you do not know the person or anything else about them.
certain的反義詞
e.g. She managed to arrange for them to be hidden in the house of acertain Father Boduen.
她設法安排他們藏在壹個叫博迪恩的神父家裏。
4.(品質、特點等)壹定程度上的，有點兒
You usea certain to indicate that something such as a quality or condition exists, and often to suggest that it is not great in amount or degree.
e.g. That was the very reason why he felt acertain bitterness...
那就是為什麽他感到有些痛苦。
e.g. There is acertain impatience among some of the soldiers...
有些士兵有點兒不耐煩。
四、例句
It's certain that every effect must have a cause.
無疑，每個結果必定有其原因。
I can tell you for certain that I am always honest.
我可以肯定地告訴妳, 我壹向是老實的。
Certain things are still open to discussion.
有些事還需要商量。
A certain man will visit you tomorrow.
明天某人將探訪妳。
For certain reasons I will be unable to attend the meeting.
因為某種原因，我不能出席這次會議。
A certain Mr Brown telephoned while you were out.
妳出去的時候
To a certain extent, I'm in favor of your project.
從某種程度上說,我贊成妳的方案。
There was a certain coldness in her attitude towards me.
她對我的態度有點兒冷淡。
Certain of those present had had too much to drink.
有些出席的人喝得太多了。
五、常用短語
用作形容詞(adj.)certain of壹群中的某些 some particular members of a group of people
for certain無疑地,確定地 without doubt
make certain弄清楚 inquire in order to be sure about sth
make certain of采取行動以便確有把握做其他事 do sth in order to be sure of (doing) sth else
六、情景對話
了解海關手續
A：You've traveled abroad a lot, Jim, so would you like to tell me something about clearing customs.
吉姆，妳經常出國旅遊，能向我介紹壹下關於通關的情況嗎？
certain的意思
B：When you arrive in a country, you clear customs. A lot of countries have two channels: the green channel and the red channel. Some countries, like India, have three channels: the white channel, the green channel and the red channel.
到達壹個國家時要通關。許多國家的海關有兩種通道：綠色通道和紅色通道。還有些國家如印度有三種通道：白色通道、綠色通道和紅色通道。
certain的近義詞
A：Then what are the differences between the green channel and red channel?
那麽綠色通道和紅色通道之間有什麽區別呢？
B：If you have more than the duty-free allowances or prohibited goods, you go through the red channel and declare them to a customs officer. If you otherwise have nothing to declare, you go straight through the green channel unless you are asked to stop by an officer. 如果妳攜帶的東西超出免稅的範圍或屬於禁帶物品，妳
就得從紅色通道通過並向海關官員申報物品。如果妳沒有需要申報的物品而海關官員又沒有阻攔妳，妳就可以直接通過綠色通道了。
A：I see.I'm told that we'll have to state the purpose of going to acertain country, is it true?
我明白了。我聽說去壹個國家時需要陳述旅行的目的，是嗎？
B：That's right. People go aboard for different purposes: some for pleasure, some on vacation, some on business, and some for other purposes.
是的。人們出國都各有目的：有的為了消遣，有的出去度假，有的是因公出差，有的是為了其他目的。
certain的意思
A：I'm going to New Zealand for sightseeing. What should I say if they ask about my purpose?
我要去新西蘭觀光，如果他們問我旅行的目的我該怎麽說呢？
certain是什麽意思
B：Just saying "sightseeing" is OK.
說"觀光"就行了。
七、詞語用法
adj.(形容詞)certain的基本意思是“確信無疑的”或“毋庸置疑的”,即“肯定的,確信的”,在句中常用作表語。其後可接動詞不定式,表示“相信(某人)會做某事”。certain的另壹個意思是“某壹,某種”,在句中只能用作定語,常與不定冠詞a連用,修飾單、復數名詞或抽象名詞,表示“因故而未加具體說明的人、物、地點、時間等”。be certain用於祈使句,意思是“壹定要設法辦到?”。It is/was certain that...表示說話人的看法，其中certain 不可用certainly或sure代替。在否定句中,多接以疑問詞whether,what,how等引導的從句。certain前不能用very或extremely修飾,如需強調可用absolutely或completely等詞修飾。短語動詞make certain的意思是“弄確實,弄清楚”,其後可接of引起的動名詞短語或that從句。certain表示“某個，某些”時，作形容詞或代詞，如a certain friend of his或certain of his；certain作形容詞表示“壹些”時，常修飾抽象名詞，如a certain hesitation，a certain coldness；區別certain和sure：兩者後面都可跟of，不定式或that從句。certain比sure語氣來的更重。It is certain that...比It is sure that...更為普遍。I am certain/sure of his honesty.
I am certain/sure to see him tomorrow.
certian of和certain to do表示不同的意思。He is certain to come tomorrow.
他明天壹定來。
He is certain of coming tomorrow.
他相信他明天壹定來。
certain作形容詞指“確定的”時，後面接的介詞about可省略。I am not certain (about) where he lives.
我不太確定他住在哪裏。
for certain表示“肯定的，無疑的”，屬於固定詞組。certain的相關近義詞
absolute、confident、convinced、express、particular、positive、reliable、settled、special、sure
certain的相關反義詞
disputable、doubtful、questionable、uncertain、unclear、unconvinced、unfounded、unlikely、unreliable、unsettled、unsure
certain的相關臨近詞
certainly、cert、Certaines、certain of、Certain tea、certainness、certain fee、certain jet、certain rate、certain size、certain-ty、certain list
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