我已经有两年没学中文了。

最后一次学习中文是两年前的事了。 我有两年没有学习中文了。

It's already been two years since I last studied Chinese -> 我学习中文已经有两年多了。 Rong's answer carried the opposite meaning 我已经有两年没学中文了 -> I have not studied Chinese for two years already.

It's already been two years since I last studied Chinese? It's already been two years已经过去了两年了 since I last studied Chinese? 自从我上次学习汉语 直接翻译就是：我已经两年没学习汉语了。