I think we should go back to first principles.

　　我認為我們應該回到基本原則上。

　　First of all we must identify the problem areas.

　　首先我們必須找出問題所在。

　　The book wasn't anything like as good as her first one.

　　這本書遠遠不如她的處女作。

　　First get students to form groups of four.

　　首先讓學生分成四人一組。

　　The school is the first of its kind in Britain.

　　這是英國同類學校中最早的一所。

　　Mark has two children to support from his first marriage.

　　馬克得扶養他第一次婚姻生的兩個孩子。

　　First try to do something that is within your scope.

　　你先試著做一件自己力所能及的事。

　　With the first goal he used his head in more ways than one.

　　他進第一個球時從多方面動了腦筋。

　　It was the first time I had set foot on American soil.

　　那是我第一次踏足美洲大地。