1. If you are talking about something that is completely in the past, you use the Past Tense (sometimes called the Imperfect), e.g.
如果所谈论的事情完全发生在过去，则用过去时态(有时也叫做未完成时态)，例如：I used to live in Seattle /我过去住在西雅图。
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2. A Spanish verb has six present-tense forms, and six each in the preterite, imperfect, future, conditional, subjunctive and two different past subjunctives, for a total of 48 forms.
3. One thing you need to remember about the imperfect past tense—it is for activities that were ongoing or repeated; something you were doing in the past, or something you used to do.
你应该记住过去未完成式是指过去进行的或重复的动作，你在过去正在做的事或习惯的事。
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4. One thing you need to remember about the imperfect past tense—it is for activities that were ongoing or repeated; something you were doing in the past, or something you used to do.
