auxiliary verb
US /ɔːɡˈzɪl.i.er.i vɜːrb/
UK /ɔːɡˈzɪl.i.er.i vɜːrb/
1.
助动词
a verb used in forming the tenses, moods, and voices of other verbs.
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In the sentence 'She is singing,' 'is' is an auxiliary verb.
在句子“她正在唱歌”中，“正在”是助动词。
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Common auxiliary verbs include 'be', 'do', and 'have'.
常见的助动词包括“be”、“do”和“have”。