@IRHKII, Richard,

I feel compelled to third the notion that Chinese has no tenses, so you can only rely on an aspects and context to carry time information. As long as you put the time that you are speaking about and the information that you are trying to express, then the context should take care of the rest.

EG:

截至到明年三月，中国有害的"地沟油"我就已经吃了三年了，而我却活下来啦！

In March of next year, I will have eaten pernicious Chinese "swill oil" for three years, and will have lived to tell the tale!