auxiliary verb

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auxˌiliary ˈverb noun [countable]  SLGa verb that is used with another verb to show its tense, person, mood etc. In English the auxiliary verbs are ‘be’, ‘do’, and ‘have’ (as in ‘I am running’, ‘I didn’t go’, ‘they have gone’), and all the modals. 助动词

auxˌiliary ˈverb nounChineseSyllable  

auxiliary verb
auxˌiliary ˈverb noun [countable]
a verb that is used with another verb to show its tense, person, mood etc. In English the auxiliary verbs are ‘be’, ‘do’, and ‘have’ (as in ‘I am running’, ‘I didn’t go’, ‘they have gone’), and all the modals