（1）first, second, third, last（不推荐，原因：俗）
（2）firstly, secondly, thirdly, finally（不推荐，原因：俗）
（3）the first, the second, the third, the last（不推荐，原因：俗）
（4）in the first place, in the second place, in the third place, lastly（不推荐，原因：俗）
（5）to begin with, then, furthermore, finally（强烈推荐）
（6）to start with, next, in addition, finally（强烈推荐）
（7）first and foremost, besides, last but not least（强烈推荐）
