certain

/ˈsɜːtn//ˈsɜːrtn/

★★★★★adj.

certain
more certain
most certain

adj

① 确定的,无疑的,确信的
- I am [feel] absolutely certain of his success.我对他的成功确信不疑。
- She was certain that he would come.她确信他会来。
- She felt certain she was right.她确信自己是对的。
- He was not certain whether he should go.他不能确定是否该去。
- I am not certain what to say.我不能确定该说什么。

②[无比较级]确定的,一定的
- at a certain place在一个确定的地方

③ 1(事情)可靠的;必然的;(知识、技术等)正确的2必然的;无疑的
- certain evidence确实的证据
- It is almost certain that he will disapprove.几乎可以确定他不赞成。
- He's certain to be late.他必定会迟到(★可改写为It's certain that he will be late.)。

④ (虽可指明或说明而)未指明或说明的;某
- A certain person phoned while you were out.你出去时有人打电话来。
- a certain Mr. Smith某一位史密斯先生

⑤ 若干;一些;相当的
- For certain reasons she will not come.由于某些理由,她不会来。
- to a certain extent到相当程度;在某一范围内
- She showed a certain amount of sympathy.她表现出些许同情。

pron

① 【文】(其中的)某些(★【口】用some)
- Certain of those present were foreigners.在场那些人当中有些是外国人。

用法

形容词第四个释义用法中, certain系用于表示虽知其为何人何物,但以不指名或不加说明为好;但指人名时,普通不用certain,而多用a Mr. [Mrs.] Smith或a Henry Smith。

字辨

sure: 为表无疑地「确定的」「确信的」之意的一般用语

certain: 作「确定的」「确信的」解时,常与sure同义使用

如加以区别时, certain用于根据事实或证据的场合, sure则用于凭主观的或直觉的判断:

I'm sure he'll come.

It's certain he'll come.

词族

certainlyadv.的确;无疑地
certaintyn.确实;无疑

短语

for certain
- ①[通常置于know或say之后]无疑地;确定地
- I know for certain that I have seen her before.我确知我以前见过她。
- I can't say for certain (when she'll come).我不能确定地说(她什么时候会来)。
make certain
- ① 弄清楚,弄确实<of>;弄清楚以便有把握(做到某事)<that>
- I think there's a train at 8, but you'd better make certain.我想八点有一班火车,不过你最好确定一下。
- I'll go earlier and make certain of getting there on time.我会早一点去,以确定准时到达那里。
- Make certain (that) you know what time the train leaves.你要确实知道火车什么时候开。

同义词

decidedadj.明确的
definiteadj.确定的

assured
confident
firm
fixed
flat
hard
inarguable
incontestable
incontrovertible
indisputable
indubitable
inescapable
inevitable
infallible
irrefutable
positive
secure
set
sure
sure-fire
unassailable
unavoidable
undeniable
undisputable
undoubting
unerring
unfailing
unquestionable

sealed

反义词

indefiniteadj.不确定的
uncertainadj.不确定的

unsealed
unsure

词汇	certain
释义	certain /ˈsɜːtn//ˈsɜːrtn/ ★★★★★adj. certain more certain most certain adj ① 确定的,无疑的,确信的 I am [feel] absolutely certain of his success.我对他的成功确信不疑。 She was certain that he would come.她确信他会来。 She felt certain she was right.她确信自己是对的。 He was not certain whether he should go.他不能确定是否该去。 I am not certain what to say.我不能确定该说什么。 ②[无比较级]确定的,一定的 at a certain place在一个确定的地方 ③ 1(事情)可靠的;必然的;(知识、技术等)正确的2必然的;无疑的 certain evidence确实的证据 It is almost certain that he will disapprove.几乎可以确定他不赞成。 He's certain to be late.他必定会迟到(★可改写为It's certain that he will be late.)。 ④ (虽可指明或说明而)未指明或说明的;某 A certain person phoned while you were out.你出去时有人打电话来。 a certain Mr. Smith某一位史密斯先生 ⑤ 若干;一些;相当的 For certain reasons she will not come.由于某些理由,她不会来。 to a certain extent到相当程度;在某一范围内 She showed a certain amount of sympathy.她表现出些许同情。 pron ① 【文】(其中的)某些(★【口】用some) Certain of those present were foreigners.在场那些人当中有些是外国人。用法形容词第四个释义用法中, certain系用于表示虽知其为何人何物,但以不指名或不加说明为好;但指人名时,普通不用certain,而多用a Mr. [Mrs.] Smith或a Henry Smith。字辨 sure: 为表无疑地「确定的」「确信的」之意的一般用语 certain: 作「确定的」「确信的」解时,常与sure同义使用如加以区别时, certain用于根据事实或证据的场合, sure则用于凭主观的或直觉的判断: I'm sure he'll come. It's certain he'll come. 词族 certainlyadv.的确;无疑地 certaintyn.确实;无疑短语 for certain ①[通常置于know或say之后]无疑地;确定地 I know for certain that I have seen her before.我确知我以前见过她。 I can't say for certain (when she'll come).我不能确定地说(她什么时候会来)。 make certain ① 弄清楚,弄确实<of>;弄清楚以便有把握(做到某事)<that> I think there's a train at 8, but you'd better make certain.我想八点有一班火车,不过你最好确定一下。 I'll go earlier and make certain of getting there on time.我会早一点去,以确定准时到达那里。 Make certain (that) you know what time the train leaves.你要确实知道火车什么时候开。同义词 decidedadj.明确的 definiteadj.确定的 assured confident firm fixed flat hard inarguable incontestable incontrovertible indisputable indubitable inescapable inevitable infallible irrefutable positive secure set sure sure-fire unassailable unavoidable undeniable undisputable undoubting unerring unfailing unquestionable sealed 反义词 indefiniteadj.不确定的 uncertainadj.不确定的 unsealed unsure
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