请帮我分析这几个句子“if you are not moving ahead,you are falling behind”

问题描述:

请帮我分析这几个句子“if you are not moving ahead,you are falling behind”

If you are not moving ahead,you are falling behind.不进则退.
这是if引导的条件状语从句,主句和从句相同,用的现在进行时态.