We will start our class as soon as Tim___(arrive).

问题描述:

We will start our class as soon as Tim___(arrive).
怎么填?为什么要这样填?

arrives.Tim一到我们就开始上课.主句是一般将来时,则从句用一般现在时.从句时态总是比主句的时态晚一个阶段.