词组 | theory |
释义 | theory AC /ˈθɪəri $ ˈθiːəri/ noun an idea or set of ideas that is intended to explain somethingadjectives/nouns + theorya scientific/political/economic etc theory Scientific theories can be tested experimentally.a conspiracy theory (=a theory that an event was the result of secret plan made by several people) There are dozens of conspiracy theories about President Kennedy’s assassination.a pet theory (=a personal theory that you strongly believe) Each of these historians has his pet theory on what caused the revolution.literary/critical theory (=ways of thinking about literature and art) Students will study critical theory as well as reading literature.verbs + theoryhave a theory also hold a theory formal She has a theory that there are fewer differences between girls and boys than we think.put forward a theory also advance a theory formal (=suggest it) The article puts forward the theory that Americans dislike their economic power.come up with a theory also develop a theory These birds helped Darwin develop his theory of natural selection.test a theory Researchers gave workers a questionnaire to test their theory.prove a theory No evidence exists to prove his theory.support a theory Modern research strongly supports a different theory.disprove a theory also refute a theory formal (=show that it is wrong) Later experiments seemed to disprove the theory.discredit a theory (=make people stop believing it) These latest findings discredit his entire theory.theory + verbsa theory states/holds that... His main political theory states that all societies need a class system.a theory assumes that... This theory assumes that everybody wants to be a winner.theories abound (=there are many of them) Of course, theories abound as to why people love their pets.prepositionsa theory about sth There are numerous theories about why dinosaurs died out.the theory of evolution/natural selection/relativity According to the theory of relativity, nothing can travel faster than light.phrasesin theory (=used for saying what is supposed to be true but may not really be true) Higher wages will, in theory, lead to more spending. |
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