predeterminer/ˌpriː.dɪˈtɝː.mə.nɚ/名词(置于限定词前的)前位限定词,前位限定成分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。想跟读,去练习