例如:When Bill comes (不是will come), ask him to wait for me. 比尔来后,让他等我。 I'll write to you as soon as I arrive there. 我到了那里,就写信给你。 一般过去时 二 1. 概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为。