first不是連詞,是序數詞
例句
1、
Take the first right, then the second left.
在第一個路口向右拐,然後再在第二個路口向左拐。
2、
His first music teacher was a major influence in his life.
他的第一位音樂老師是他一生中對他影響非常大的人。
3、
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。