How to say "Exactly" in Chinese? This isn't just a simple translation question--I've already run "exactly" through Google translate, but it didn't give me quite the usage I'm looking for. 

Hypothetically, let'ts say I have a friend who posts on Facebook that he got engaged every year on April Fool's Day. 

In our (theoretical) scenario, if I wanted to say "It's like you got married to her exactly a year ago!", I would say something like "好像你一年前已經訂婚了" However, in my vocabulary, the "一年前" denotes "roughly one year ago", instead of "Exactly one year to the day ago." 

How would I best communicate that he (potentially) pulled the same prank one year ago to the day?
In your scenario, I would say "今天正好是你订婚一周年"

正好 
Exactly, and you can also say 正正好好 'absolutely exactly'(don't know how to say it)



This is a common word which can be proved by 

李同志依了好婆的话去做,果然,正正好好的到了头。(文匯月刊, 第 111-115 卷 第25页)

太晚了人家也要怪的,五分钟正正好好, (新华文摘 第 7-12 期 第86页)

正正好好戴在唐僧的脑袋上 (另眼看四大名著: 西遊記、水滸傳、三國演義、紅樓夢
作者：馬亞麗)