predeterminer
noun [ C ] language specialized uk/ˌpriː.dɪˈtɜː.mɪ.nər/ us/ˌpriː.dɪˈtɝː.mə.nɚ/
（置于限定词前的）前位限定词，前位限定成分
in grammar, a word that is sometimes used before a determiner to give more information about a noun in a noun phrase
In the phrases "all these children" and "once a day" the words "all" and "once'" are predeterminers. 在短语 all these children 和 once a day 中，all 和 once 都是前位限定成分。