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IELTS BNC: 596 COCA: 918
theory noun
⇨ theory 1 (the theory of relativity) ⇨ theory 2 (I have this theory that…)theory1

noun

 the theory of relativity 相對論I have this theory that... 依我看⋯theory ♦︎ principle ♦︎ law ♦︎ rule ♦︎ theoremThese are all words for an idea or set of ideas that explains why sth happens or why sth exists. 這些詞均表示學說、理論、原理。PATTERNS AND COLLOCATIONS 句型和搭配◆a theory / law / rule / theorem about sth◆the theory / principle behind sth◆in theory / principle◆the theory / principle / law / rule / theorem that...◆a basic / fundamental theory / principle / law / rule / theorem◆a mathematical theory / principle / law / rule / theorem◆a scientific theory / principle / law / rule◆to prove a theory / principle / law / rule / theorem◆to define a law / rule◆to apply a theory / principle◆a theory / principle / law / rule / theorem states that...■ theory [countable, uncountable] a formal set of ideas that is intended to explain why sth happens or exists; the ideas on which a particular subject is based 學說；理論◆There are conflicting theories as to the very early origins of mankind.關於人類最早的起源有些相互矛盾的理論。◆According to Einstein's theory of relativity, nothing can travel faster than light.根據愛因斯坦的相對論，任何東西都無法超越光速。◆He wrote a number of books on political theory.他撰寫了幾本政治理論方面的書。◆In theory, all children get an equal chance at school.從理論上講，所有孩子在學校都能獲得平等的機會。  see also theoretical ⇨ intellectual 1 ■ principle [countable, uncountable] an idea or theory that sth is based on; a general or scientific idea that explains how sth works or why sth happens 法則；原則；原理；定律◆The principle behind it is very simple.這背後的原理很簡單。◆We must get back to first principles (= the basic principles of sth).我們必須回到根本原則上來。◆It is based on the principle that heat rises.這是基於熱氣上升的定律。◆A tidal current turbine is similar in principle to a windmill.潮流渦輪機從原理上和風車相似。  see also principle ⇨ principle 2 ■ law [countable] the fact that sth always happens in the same way in an activity or in nature; a scientific statement made by sb that explains a natural process 規律；法則；原理；定律◆The usual laws of supply and demand do not seem to apply in this case.一般的供求規律似乎不適用於這種情況。◆Do you remember anything about Ohm's Law?你還記得歐姆定律嗎？  see also law ⇨ principle 2 ■ rule [countable] a statement of what is possible according to a particular system, for example the grammar of a language 規則；法則◆He's a writer who doesn't seem to know the most basic rules of English grammar.他這個作家似乎連最基本的英語語法規則都不知道。  see also rule ⇨ principle 2 ■ theorem ˈθɪərəm; NAmE ˈθiːərəm, ˈθɪrəm [countable] (technical 術語) a rule or principle, especially in mathematics, that can be proved to be true （尤指數學）定理◆Work out the answer using Pythagoras's Theorem.運用畢達哥拉斯定理算出答案。theory2

noun

 the theory of relativity 相對論I have this theory that... 依我看⋯theory ♦︎ hypothesis ♦︎ premise ♦︎ thesis ♦︎ propositionThese are all words for an idea that sb believes but that has not yet been proved, especially one used as the basis for another idea or proposal. 這些詞均表示假說、假設，尤指可用作其他觀點或提議基礎的假定。PATTERNS AND COLLOCATIONS 句型和搭配◆a theory / hypothesis / thesis / proposition about sth◆a theory / hypothesis / thesis on sth◆a theory / hypothesis / premise / thesis / proposition that...◆to have a theory / hypothesis / premise / thesis◆to formulate a theory / hypothesis / thesis◆to support a theory / hypothesis / premise / thesis / proposition◆to test a theory / hypothesis / premise / proposition◆to prove a theory / hypothesis / thesis / proposition◆to be based on a theory / hypothesis / premise / thesis / proposition◆a theory / hypothesis / premise / thesis / proposition is based on sth■ theory [countable, uncountable] an opinion or idea that sb believes is true but that has not been proved （未經證明的）意見，看法；推測◆I have this theory that most people prefer being at work to being at home.依我看，多數人喜歡工作而不願待在家裏。◆This is all theory so far...you'll need to back it up with facts.到目前爲止，這都是推測，你需要用事實來印證。■ hypothesis haɪˈpɒθəsɪs; NAmE haɪˈpɑːθəsɪs(plural hypotheseshaɪˈpɒθəsiːz; NAmE haɪˈpɑːθəsiːz) [countable] (rather formal) an idea or explanation of sth that is based on some known facts but has not yet been proved to be true or correct （有一定事實依據但未被證實的）假說，假設◆His hypothesis about what dreams mean provoked a lot of debate.他關於釋夢的假說激起很多爭論。◆This economic model is really a working hypothesis (= sth that people are using as if it were true or correct but which may yet be proved wrong).這個經濟模型實際上是一個暫定的假說，以便展開分析。  see also hypothetical ⇨ supposed ■ premise ˈpremɪs [countable] (formal) a statement or idea that forms the basis for a reasonable theory 前提；假定◆The basic premise of this argument is deeply flawed.這一論據的基本前提有很大缺陷。◆The argument rests on a false premise.這個論點是以錯誤的前提爲基礎的。■ thesis ˈθiːsɪs (plural theses ˈθiːsiːz ) [countable] (rather formal) a statement or opinion that is discussed in a logical way and presented with evidence to prove that it is true 命題；論題◆The basic thesis of the book is fairly simple.這本書的基本觀點相當簡單。  see also thesis ⇨ paper ■ proposition ˌprɒpəˈzɪʃn; NAmE ˌprɑːpəˈzɪʃn [countable] (formal) a statement that expresses an opinion, especially one used as the basis of an argument （尤指作爲論證基礎的）命題，主張，觀點◆Her argument is based on the proposition that power corrupts.她的論證是建立在權力使人堕落的觀點上。

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