past perfect - This tense describes a completed event, action, or state that took place before another past event, action, or state. It is used to talk about things that happened before the main action., simple past - This tense describes a completed event, action, or state in the past. It is usually the main tense used to talk about the past., past progressive - This tense describes actions or states in progress at a particular time in the past. It is often used to describe background action (e.g., the weather).,

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