Past Simple: for finished actions in the past, for repeated actions in the past, Past Continuous: to talk about an action in progress at a specific time in the past., we don't use it with stative verbs, to describe a past action in progress which was interrupted by another action (expressed in the past simple)., with while for two actions happening at the same time, to describe what's happening at the beginning of a story, Past Perfect: when we are talking about the past and we want to talk about an earlier past action,

Intermediate Unit 17 Grammar

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