Preverb
句首助动词, 前动词(即移至句子第一个位置上的助动词)
🗣️ 情景例句
Not at all. Hope you come again.
不客气。希望你能再来。
Yes,I had breakfast two hours ago.
是,我2小时以前吃了早餐。
Yes. I went to bed too late last night.
是的。我昨晚睡得太晚。