音标：['spekjuleit] ；柯林斯词典等级：3 级；

vi. 深思, 推测, 投机
[经] 投机

v. to believe especially on uncertain or tentative grounds
v. talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
v. invest at a risk

词型变化：现在分词 : speculating ; 过去式 : speculated ; 过去分词 : speculated ; 第三人称单数 : speculates ; 名词复数形式 : speculates
考试类型：[六级/考研/托福/IELTS/GRE]

词性分布：

动词100%

speculate的用法和样例：

例句

用作及物动词(vt.)

The doctors speculate that he died of cancer.医生推测他死于癌症。
Can you speculate how such damage might arise?你能否想出这种伤害是怎样引起的?

用作不及物动词(vi.)

He likes to speculate on the stock market.他喜欢炒股。
It's dangerous to speculate.做投机买卖是很危险的。
He did not speculate on who would get the prize.他没有去猜测谁将得奖。
He began to speculate about the future.他开始思索未来。
She often speculated as to what sort of man she would marry.她常常在想将来自己会跟什麽样的人结婚。

常见句型

用作动词(v.)

用作不及物动词S+～(+A)

We don't know all the circumstances, so it would be pointless to speculate.我们不了解所有的情况,妄加推测是没有意义的。

用作及物动词S+～+that-clause

He speculated that he would succeed.他推测他将成功。
The police are speculating that this incident may be linked to a similar attack two weeks ago.警方推测这次事件可能同两周前的类似的袭击有联系。

常用短语

用作动词(v.)

speculate about (v.+prep.)

We should speculate about the purpose of life.

我们应该想想人生的目的。

It was a quiet evening and Tom was speculating about the origin of the universe.

静悄悄的夜晚,汤姆在思索着宇宙的起源。

speculate in (v.+prep.)

He made a fortune speculating in tin shares, and lost almost all of it in cocoa futures.

他做锡股的投机生意发了财,在做可可的期货交易时几乎又赔了个精光。

词汇搭配

用作动词 (v.)

～+副词

speculate casually碰巧地猜测
speculate rashly轻率地推测
speculate shrewdly精明地猜测
speculate theoretically理论地猜测

～+介词

speculate about关于…思索
speculate as to为…思索
speculate for〔in〕投机
speculate on关于…推测

经典引文

Some physicists have speculated that in nature all particles may be colorless.
出自：Scientific American

【近义词】

conjecture推测
guess推测
contemplate注视
consider考虑
gamble赌博
risk危险
venture冒险(事业)
hypothesize假设
reason原因
ponder沉思
wonder惊奇
cogitate思考
reflect on考虑
take risks冒险
hazard危险
take a chance冒险
meditate沉思
theorize推理
deliberate深思熟虑的
reflect反映
chance可能性
study研究
generalize概括
conceive设想
think认为
muse沉思
mull思索
think over仔细考虑
hypothecate假定
chew over仔细考虑
theorise建立理论
hypothesise假设
excogitate想出
job工作
ruminate深思
suppose假设
mull over仔细考虑

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