as of 這個片語後面接的一定是時間點，

例如 as of today, as of July 24, 2014.

但很妙的是，這個片語同時具有兩個完全相反的意思，

那就是 (1) 從這個時間點開始 或是

(2) 截至這個時間點為止 (as of= from or until a given time) 。

 as of press time

As of today, no late homework is going to be accepted.

今天以後.

The baseball team is in lead of 3 scores as of 5 p.m.

截至5p.m.

.

Mr.Pak's promotion will become effective as of 2 June.

6月2日生效.