First of all

第一───first;的───Of

Let's clean their room first and then ours.───咱们先打扫他们的房间,再打扫我们的房间.

We're expecting our first baby.───我们要生第一个孩子了。

The horse was tired, but the rider spurred him on and reached the post first.───那匹马累了, 但骑手仍策马疾驰,终于第一个跑到终点.

Her manner seemed unpleasant at first, but she improved on further acquaintance.───起初她的举止让人很不愉快, 但是经过进一步接触她改了许多.

She first appeared on the screen ten years ago.───十年前,她第一次出现在银幕上.

We had a few near misses in the first raid.───在第一次袭击中,有几次我们都差一点就命中目标.

Let's go to the theatre first and eat afterward.───让我们先去看戏,然后吃饭.

The Beatles first visited America in 1964 and took the country by storm.───甲壳虫乐队于1964年第一次访问美国,立即使美国人民为之倾倒.

Of soup and love, the first is the best.

The first step is the only difficulty.

Obedience is the first duty of a soldier.

I don't remember my first day at school.

Our first priority is to improve standards.