first可以單獨用開頭嗎？

first可以單獨用開頭。

first, I want to thank my parents.

首先 我要感謝我的父母。

First, we need to finish the homework and housework.

首先，我們需要完成作業和家務。

When he graduated from Harvard, he had a first in English.

他在哈佛畢業時，獲得了英語一級優等學位。

This is my first visit to New York.

這是我第一次到紐約