In linguistics, a grammatical patient, also called the target or undergoer, is the participant of a situation upon whom an action is carried out. A patient as differentiated from a theme must undergo a change in state.[example needed] A theme is denoted by[clarification needed] a stative verb, whereas a patient is denoted by a dynamic verb. At the very least, there is debate to this effect. Also, patient is the name of the thematic relation with the above definition.
For example, in the sentence "Jack ate the cheese", "the cheese" is the patient. In certain languages, the patient is declined for case or otherwise marked to indicate its grammatical role. In Japanese, for instance, the patient is typically affixed with the particle o (hiragana を) when used with active transitive verbs, and the particle ga (hiragana が) when used with inactive intransitive verbs or adjectives. Although Modern English does not mark grammatical role, patienthood is represented irregularly in other ways; for instance, with the morphemes "-en", "-ed", or "-ee", as in "eaten", "used", or "payee".[clarification needed]
The grammatical patient is often confused with the direct object. However, there is a significant difference. The patient is a semantic property, defined in terms of the meaning of a phrase; whereas the direct object is a syntactic property, defined in terms of the phrase's role in the structure of a sentence. For example, in the sentence "The dog bites the man", the man is both the patient and the direct object. By contrast, in the sentence "The man is bitten by the dog", which has the same meaning but different grammatical structure, the man is still the patient, but now stands as the phrase's subject; while the dog is only the agent.
The term "theme" is often used to describe the same relation as patient.
- Memidex.com Retrieved 2012-07-24.
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