谁知道非谓语动词的英文定义啊?

Non-Finite Verbs:
In linguistics,a non-finite verb (or a verbal) is a verb form that is not limited by a subject; and more generally,it is not fully inflected by categories that are marked inflectionally in language,such as tense,aspect,mood,number,gender,and person.As a result,a non-finite verb cannot generally serve as the main verb in an independent clause; rather,it heads a non-finite clause.
By some accounts,a non-finite verb acts simultaneously as a verb and as another part of speech; it can take adverbs and certain kinds of verb arguments,producing a verbal phrase (i.e.,non-finite clause),and this phrase then plays a different role — usually noun,adjective,or adverb — in a greater clause.This is the reason for the term verbal; non-finite verbs have traditionally been classified as verbal nouns,verbal adjectives,or verbal adverbs.
English has three kinds of verbals:participles,which function as adjectives; gerunds,which function as nouns; and infinitives,which have noun-like,adjective-like,and adverb-like functions.Each of these kinds of verbals is also used in various common constructs; for example,the past participle is used in forming the perfect aspect (to have done).

在句子中充当除谓语以外的各种句子成分的动词形式叫做非谓语动词(the Non-Finite Verbs)。非谓语动词有三种：不定式（the Infinites）、动名词（the Gerunds）和分词（the Participles）。

non-finite verb