while i was waiting outside my wife's office building for he

while i was waiting outside my wife's office building for her to get out of work
请问下：为什么outside要放在waiting的后面而不是其他地方呢?
就这样看上去.翻译起来就是我在等待办公室外面的妻子下班?
= =!很奇怪.请教...