习惯过去时.习惯过去时有一些不同的用法。它用于规律发生的时间，比如“I used to eat out every day”或“He wrote poems when he was young”，等价于未完成时。它还可以用作一种条件语气，比如:“If you asked I would come”或“If you had asked I would have come”。很容易形成习惯过去时: 简单的开始于简单过去时并把 变为 (除了在 [2 VF] 形式中)。词尾是 。例如: 。“