音标：['θiәri] ；柯林斯词典等级：4 级；牛津三千核心词汇；

n. 理论, 学说, 原理, 意见, 推测
[化] 理论

n. 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
n. a belief that can guide behavior

词型变化：名词复数形式 : theories
考试类型：[高考/四级/六级/考研/IELTS]

词性分布：

名词100%

theory的用法和样例：

例句

用作名词(n.)

There're many theories about the origin of life.关于生命起源的学说有很多。
In theory, anything could happen.理论上来说,任何事情都会发生。
Not everyone can understand Einstein's Theory of Relativity.不是每个人都能读懂爱因斯坦的相对论的。
In his book, he explained the operating theories of computer in detail.在他的书中,他详细阐述了计算机的工作原理。
Mary is full of fascinating theories about men and women.玛丽对男人和女人充满了迷人的想法。
She has a theory that drinking milk prevents cold.她有一种说法,认为喝牛奶能防止感冒。

常见句型

用作名词(n.)

There are many theories about the origin of life.关于生命起源的学说有很多。
Your plan sounds fine in theory.你的计划在理论上听起来不错。
He was studying music theory.他在学习乐理。
She has a theory that drinking milk prevents colds.她有一种说法,认为喝牛奶能防止感冒。

词汇搭配

用作名词 (n.)

动词+～

accept theory接受理论
have a theory有一种说法

形容词+～

abstract〔crude〕 theory抽象〔不成熟〕的理论

介词+～

in theory在理论上
on the theory根据理论

～+介词

theory about writing写作理论
theory of gravitation万有引力学说

经典引文

My aunts and uncle had..no theories about child upbringing.
出自：Day Lewis

【近义词】

hypothesis假说
idea主意
supposition假设
speculation推测
explanation解释
thought思想
judgment裁判
attitude态度
conception概念
view视野
inference推理
impression印象
opinion意见
thesis毕业论文
sentiment情绪
abstraction抽象
feeling感觉
proposition提议
philosophy哲学
model模范
concept观念
system系统
scheme阴谋
notion观念
principle原理
belief信念
rule规则
premise前提
conjecture推测
presumption推测
assumption假定
guess推测
law法律
possibility可能

【反义词】

practice练习

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