'Had' is the past tense of the verb 'have,' used to indicate possession or experience in a prior time frame. It plays a crucial role in forming the perfect aspect, which expresses actions that were completed before another point in time, and it can also be utilized in the progressive aspect to show ongoing actions in the past. Understanding 'had' allows one to grasp how events relate to each other in terms of time and completion, making it essential for constructing coherent narratives and descriptions.
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