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Does anyone know a good mnemonic device to remember the rules of preterite and imperfect for Spanish?
Imperfect
Action in progress
Habitual action
Description
Weather
Time
Age
Simultaneous Action
Narration/Backround
Feelings/Beliefs

Preterite
Completed action
Isolated Action
Beginning or End
Interuption
Narration of action
Timeline
Special Meaning verb

They don't have to be in that order.