firstofall英语

first of all  是首先，第一的意思，应用于排列原因等时。

first of all是指次序上的“首先”“第一”这个意思。

For example：First of all, I want to thank you all for coming.

at first是指“最初”、“最开始”。

For example :At first I thought he was a good person, but later I found out he is a jerk.

最初我以为他是个好人，后来我发现他是个混蛋。

first of all[英][fə:st ɔv ɔ:l][美][fɚst ʌv ɔl]首先例句：owever, women at a young age, first of all, should have their own work. Only independent women can live happily.但是，女人在年轻的时候首先应该要有自己的工作，女人独立才活的幸福.。“ It's not going to be the old policy as usual, first of all because old policies didn't work,” he said.他说：“不会像过去一样维持老政策了。首先因为老政策没有见效。

First of all 是首先的意思一般用于句首。 after all 是毕竟的意思，一般用于句尾。 above all 常用的意思有“首先”和 "尤其是"的两种意思, 可用于句首，句中，句尾。 希望能帮到你，