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
I need a new toothbrush. My old one's worn out.
我需要一支新牙刷。旧的用坏了。
Let me give you an indication.
我可以提示一个想法。
No one can avoid being influenced by advertisements.
没有人能避免受广告的影响。