江西成人高考2022英语动词时态详解：一般现在时代替一般将来时

　　15. 一般现在时代替一般将来时

　　When, while, before, after, till, once, as soon as, so long as, by the time, if, in case （that）, unless, even if, whether, the moment, the minute, the day, the year, immediately等引导的时间状语从句，条件句中，用一般现在时代替将来时。例如：

　　He is going to visit her aunt the day he arrives in Beijing. 他一到北京，就去看他姨妈。