首页英语词典theorytheory的意思

theory

英 ['θɪərɪ] 美['θiəri]

英英释义词组搭配考试真题实用场景例句

近义词hypothesis impression idea judgment explanation attitude view opinion inference thought

反义词

n. 理论；原理；学说；推测

CET4TEM4考研CET6中高频词核心词汇

词态变化

复数: theories;

中文词源

theory 理论，学说，假设

来自希腊语 theoria,推理，假设，来自 theorein,看，观察，考虑，来自 thea,看，视野，词源同 theater.引申词义理论，学说等。

英英释意

1. a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena;: "theories can incorporate facts and laws and tested hypotheses"; "true in fact and theory"

2. a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena;: "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices"

3. a belief that can guide behavior;: "the architect has a theory that more is less"; "they killed him on the theory that dead men tell no tales"

英文词源

theory: theory: [16] The etymological notion underlying theory is of ‘looking’; only secondarily did it develop via ‘contemplation’ to ‘mental conception’. It comes via late Latin theōria from Greek theōríā ‘contemplation, speculation, theory’. This was a derivative of theōrós ‘spectator’, which was formed from the base thea- (source also of theásthai ‘watch, look at’, from which English gets theatre).

Also derived from theōrós was theōreín ‘look at’, which formed the basis of theórēma ‘speculation, intuition, theory’, acquired by English via late Latin theōrēma as theorem [16]. From the same source comes theoretical [17].
=> theatre
theory (n.): 1590s, "conception, mental scheme," from Late Latin theoria (Jerome), from Greek theoria "contemplation, speculation; a looking at, viewing; a sight, show, spectacle, things looked at," from theorein "to consider, speculate, look at," from theoros "spectator," from thea "a view" (see theater) + horan "to see," possibly from PIE root *wer- (4) "to perceive" (see ward (n.)).

Earlier in this sense was theorical (n.), late 15c. Sense of "principles or methods of a science or art" (rather than its practice) is first recorded 1610s (as in music theory, which is the science of musical composition, apart from practice or performance). Sense of "an intelligible explanation based on observation and reasoning" is from 1630s.

考试真题

While consumers are spending less on toilet paper, they remain fussy – in theory at least – when it comes to paper quality.

Doctors used carrot seeds and roots as medicine, on the theory that foods that taste bad must be good for you.

These findings are in agreement with what you would expect from the evolutionary theory: those who like to make friends and help others can gather enough resources to make it through tough times.

Later, I developed a broader theory of what separates the two general classes of learners—helpless versus mastery-oriented.

I realized these different types of students not only explain their failures differently, but they also hold different theories of intelligence.

Albert Einstein predicted this in 1905, when he introduced the concept of relative time as part of his Special Theory of Relativity.

It enables him to apply theory to practice.

To test that theory, the team examined the yellowish, dried remains inside the vessels.

In theory, interactive advertising can engage viewers in a way that 30-second spots do not.

The theory is that smoking should be stripped of any appeal to discourage new generations from starting in the first place.

The third element of love in Sternberg’s theory is what he calls decision commitment, the decision that one is in a love relationship, the willingness to label it as such and the commitment to maintain that relationship at least for some period of time.

So if you have all three of these, intimacy, passion and commitment, in Sternberg’s theory you have love.

Now what’s interesting about the theory is what do you have if you only have one out of three or two out of three? What do you have and how is it different if you have a different two out of three? What’s interesting about this kind of theorizing is it gives rise to many different combinations that can be quite interesting when you break them down and start to look at them carefully.

And he has a theory of love that argues that it’s made up of three components: intimacy,passion and commitment, or what is sometimes called decision commitment.

The central notion of social learning theories is that people learn attitudes, beliefs, and behaviors through social interaction.

Social learning theories contribute to our understanding of why we behave as we do, but much of the emphasis is on early socialization rather than on what occurs throughout life

Thus, these theories don't explain why gender roles can change in adulthood or later life.

Social learning theories also don't explain why reinforcement and modeling work for some children but not others, especially those in the same family and even identical twins

Regarding gender role building, social learning theories attach greater importance to socialization in one's childhood than in their adulthood or later life.

There are a few aspects about gender role formation which social learning theories fail to explain

It focuses on theory rather than on practical skills.

There are a number of familiar theories.

That's because the quest for a unified theory that would account for all the forces of nature has pushed current mathematics to its limits.

It will take another Einstein to build a unified theory

His solid foundation in math theory.

Nobody will read papers on apparently ridiculous theories.

Kathy, chaos theory seems to be a branch of physics or mathematics.

Chaos theory was developed by scientists, trying to explain the movement of the planets and the changes in environmental conditions

In the 1990s, many economists began to look at chaos theory as a way of providing models for forecasting.

Well, that's a good question, because the basic idea of chaos theory is that there aren't any "models" as such— there aren't guaranteed forms, but rather patterns of change in development

What was chaos theory supposed to do when it was first formulated?

Chaos theory and its applications

"In theory," says Vallentine, "this can create a high enough temperature to generate super-heated steam.

And he has a theory of love that argues that it's made up of three components: intimacy,passion and commitment, or what is sometimes called decision commitment.

However, this is a contentious theory and such claims have been treated skeptically by some scholars based on their reading of the relevant data.

I spend most of my time studying the big bang theory and where our universe came from.

I'm watching a comedy called The Big Bang Theory.

Joseph wanted to put this theory to the test.

So if you have all three of these, intimacy, passion and commitment, in Sternberg's theory you have love.

The third element of love in Sternberg's theory is what he calls decision commitment, the decision that one is in a love relationship, the willingness to label it as such and the commitment to maintain that relationship at least for some period of time.

You see it in faculty members who are pleased when their students make a discovery that undermines a cherished theory that they had put forward.

As a child, few people guessed that he was going to be a famous scientist whose theories would change the world.

Hollywood's theory that machines with evil minds will drive armies of killer robots is just silly.

If Tononi's theory is right, it would explain why, when we miss a night's, we find it harder the next day to concentrate and learn new information — our brains may have smaller room for new experiences.

In any case, despite so much evidence to the contrary, many managers still agree to theory X.

In the 1960s, Douglas Mcgregor, one of the key thinkers in the art of management, developed the mow famous theory X and theory Y.

In theory, they should live by the French law is often ignored or unknown, thus making them into an interesting area of "lawlessness" in the world.

Instead of introducing scientific theories, he tells a story, within which he tries to make his points, perhaps in order to keep the reader's attention.

Scientists have advanced many theories about why human beings cry tears, none of which has been proved.

Support is growing for a theory that sleep evolved so that connections between neurons in the brain can be weakened overnight, making room for fresh memories to form the next day.

Theory X is the idea that people instinctively dislike work and will do anything to avoid it.

Theory y is the view that everyone has the potential to find satisfaction in work.

We hear about the science of child development and as they begin to date we hear about the theory of sexual attraction.

This theory was known as diffusionism.

Supporters of the theory viewed culture as a collection of integrated parts that work together to keep a society functioning.

In the early 1900s in North America, German-born American anthropologist Franz Boas developed a new theory of culture known as historical particularism.

Coinciding with the groundbreaking theory of biological evolution proposed by British naturalist Charles Darwin in the 1860s, British social philosopher Herbert Spencer put forward his own theory of biological and cultural evolution.

But a number of anthropologists in the early 1900s also rejected the particularist theory of culture in favor of diffusionism.

American social scientist Lewis Henry Morgan introduced another theory of cultural evolution in the late 1800s.

Also in the early 1900s, French sociologist Emile Durkheim developed a theory of culture that would greatly influence anthropology.

Yet it is precisely these non-celebrity influentials who,according to the two-step-flow theory,are supposed to drive social epidemics by influcencing their friends and colleagues directly.

The theory also seems to explain the sudden and unexpected popularity of people was wearing, promoting or developing whatever it is before anyone else paid attention.

The supposed importance of influentials derives from a plausible sounding but largely untested theory called the “two step flow of communication”: Information flows from the media to the influentials and from them to everyone else.

It is becoming less clear, however, that such a theory would be a simplification, given the dimensions and universes that it might entail, nonetheless, unification of sorts remains a major goal.

In physics, one approach takes this impulse for unification to its extreme, and seeks a theory of everything-a single generative equation for all we see.

In the internet age, at least in theory ,this fraction can be much reduced.

According to one classical theory of emotion, our feelings are partially rooted in physical reactions.

In the internet age, at least in theory, this fraction can be much reduced.

In theory, the success of an applicant should not depend on the few others chosen randomly for interview during the same day, but Dr Simonsohn suspected the truth was otherwise.

In theory,a girl may veto the spouse her parents have chosen.

Offering up such a theory during a time of high tension between scientific and religious minds was branded as heresy, and any such heretics that continued to spread these lies were to be punished by imprisonment or even death.

The supposed importance of influentials derives from a plausible-sounding but largely untested theory called the"two-step flow of communication": Information flows from the media to the influentials and from them to everyone else.

The theory also seems to explain the sudden and unexpected popularity of certain looks, brands, or neighborhoods.

Yet it is precisely these non-celebrity influentials who, according to the two-step-flow theory, are supposed to drive social epidemics, by influencing their friends and colleagues directly.

词组搭配

in theory

used in describing what is supposed to happen or be possible, usually with the implication that it does not in fact happen

理论上（应该）；照道理

in theory, things can only get better; in practice, they may well become a lot worse.
理论上情况只会变好，实际上却很可能变得更糟。

实用场景例句

According to the theory of relativity, nothing can travel faster than light.: 根据相对论，任何东西都无法超越光速。

the theory and practice of language teaching: 语言教学理论与实践

I have this theory that most people prefer being at work to being at home.: 依我看，多数人喜欢工作而不愿待在家里。

In theory, these machines should last for ten years or more.: 从理论上讲，这些机器应能用十年以上。

That sounds fine in theory, but have you really thought it through?: 这话听起来很有道理，但是你真正全面考虑过没有？

Marx produced a new theory about historical change based upon conflict between competing groups...: 马克思创立了一种新理论，认为历史的演变是基于对立集团之间的冲突之上的。

Einstein formulated the Theory of Relativity in 1905.: 爱因斯坦于 1905 年创立了相对论。

There was a theory that he wanted to marry her...: 有人认为他想娶她。

My theory about divorce is that it's not the split-up that damages children, it's how it is handled.: 我对离婚的看法是，伤害孩子的不是婚姻的破裂，而是处理离婚的方式。

He taught us music theory.: 他教我们乐理。

...graduates who are well-trained in both the theory and practice of statistics.: 在统计学理论和实践两方面都训练有素的毕业生

A school dental service exists in theory, but in practice, there are few dentists to work in them.: 照理说，学校也有牙医诊所，可实际上，里面的牙医寥寥无几。

He is too old to go to school.: 他太老了,不能去学校了.

His experiment negatived the theory.: 他的实验驳斥了这个理论.

Einstein's theory of relativity won for him universal esteem.: 爱因斯坦的相对论赢得了全世界对他的崇敬.

Copernicus was terribly persecuted for his scientific theory.: 哥白尼由于其科学理论而遭到严重的迫害.

The theory is of limited usefulness.: 这个理论用途有限.

This theory was initially received with great scepticism by her fellow scientists.: 她的科学界同行最初对这一理论持有强烈的怀疑态度.

He hasn't a leg to stand for this theory of his.: 他的这种理论是站不住脚的.

The theory is not yet scientifically established.: 这个理论尚未被科学地证实.

The scientist elucidated his theory by three simple demonstrations.: 这位科学家以三个简单的实例来说明他的理论.

I find your theory is untenable and it must be rejected.: 我觉得你的理论是站不住脚的,必须予以摒弃.

He cited Australia's sporting success as evidence for his theory.: 他引用澳大利亚体育方面的成功来证明他的理论.

The doctrine of surplus value is the cornerstone of Marx's economic theory.: 剩余价值学说是马克思经济理论的基石.

Ade couldn't relate the phenomena with any theory he knew.: 艾德无法用他所知道的任何理论来解释这种现象.

Einstein's theory of relativity is very abstruse.: 爱因斯坦的相对论非常难懂.

Most of us don't hold with his theory.: 我们大多数人不同意他的看法.

These new facts make the theory improbable.: 这些新出现的事实使这一理论变得荒谬.

theory

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