The past continuous describes an action that was in progress at a specific time in the past. The action started before that moment and was not finished at that moment. In sentences like I was reading at 8 o'clock, the important idea is the action in progress, not the start or finish of the action. This tense often appears with past time markers such as at 7, last night, while I was walking, or when she arrived. It belongs in the broader system of Tenses, and it often works alongside Past Simple when one event happens during another.

Form the past continuous with was or were + -ing form. Use I was, he was, she was, and it was. Use you were, we were, and they were. The pattern is subject + was/were + verb + -ing. Examples: I was working, she was cooking, we were waiting, they were playing. The auxiliary shows the person and number, and the main verb shows the ongoing action. In negative sentences, add not after was or were: was not working, were not playing. In everyday English, wasn't and weren't are common.

Most verbs simply add -ing: play becomes playing, read becomes reading. Verbs ending in silent -e usually drop the -e before adding -ing: make becomes making, write becomes writing. Verbs with one stressed syllable and a short vowel usually double the final consonant before -ing: run becomes running, sit becomes sitting, get becomes getting. Verbs ending in -ie change to -ying: die becomes dying, lie becomes lying. Verbs ending in -c add -k before -ing: panic becomes panicking. These spelling changes are part of the form, not the meaning.

Use the past continuous to say what someone was doing at a particular time in the past. The time can be exact, like at 7:00, or vague, like that evening or at that moment. At 7:00, I was studying shows an action in progress during that time. She was driving home at midnight describes the activity happening then. The tense focuses on the middle of the action, not a completed result. This use is common when you want to place a person inside a past moment and show what was happening around them.

In stories, the past continuous often gives the background scene, and the past simple carries the main event. The wind was blowing and the rain was falling when the door opened. The two ongoing actions create the setting. Then the door opened gives the event that moves the story forward. Writers use this pattern to show what the world looked or felt like before something important happened. The background action can describe weather, noise, movement, or what characters were doing before the main event began.

Use the past continuous for an action already in progress when another past event interrupted it. The longer action takes the past continuous, and the interrupting event takes the past simple. I was taking a shower when the phone rang. They were leaving the restaurant when it started to snow. The first action had already begun and was not complete. The second action happened suddenly and changed the situation. Words like when often connect the two actions, and the order of the clauses can change without changing the meaning.

When two actions were happening at the same time in the past, use the past continuous for both clauses. While I was cooking, my brother was setting the table. She was listening to music while I was studying. The word while often shows this relation clearly, but the two actions can also appear in separate clauses without it. Both actions were in progress during the same period, and neither one interrupts the other. This structure is common when describing parallel activity in a room, on a trip, or during a busy moment.

Past continuous with always can describe a repeated habit in the past, especially one that annoyed the speaker. He was always losing his keys. They were always arriving late. The meaning is not a single action in progress. It is repeated behavior seen as too frequent or frustrating. The tone is often negative, though the grammar itself does not require anger. This pattern is different from simple past habits because it highlights the speaker’s reaction to the repetition.

Ask questions by putting was or were before the subject: Was I working? Was he sleeping? Were you studying? Were they waiting? The form is was/were + subject + verb + -ing. Use these questions to ask politely about an action in progress in the past. Were you working yesterday afternoon? is a natural way to ask what someone was doing at a particular time. Short answers use was, was not, were, or were not. In conversation, Were you...? can sound less direct than a simple past question.

Most stative verbs do not usually appear in the past continuous. Verbs for thoughts, feelings, possession, and states such as know, believe, own, want, love, and seem normally use the simple past instead: I knew, she wanted, they owned. These verbs describe states rather than actions in progress. A few stative verbs can appear in the continuous form when the meaning changes to an action or temporary behavior, as in I was thinking about your offer or She was being very patient. In common speech, simple past is the normal choice for stative meaning.

The past continuous shows an ongoing action, and the simple past shows a finished event. Compare I was walking home when I saw Anna with I walked home after I saw Anna. In the first sentence, the walking was already in progress and the seeing interrupts it. In the second, both actions are complete events in sequence. Use the past continuous for background, duration, and interrupted actions. Use the simple past for completed events, finished actions, and clear time sequences. In many sentences, both tenses appear together because they serve different jobs.

The past continuous refers to an action in progress in the past. The present continuous refers to an action in progress now. Compare I am working with I was working. The structure is the same, but the auxiliary changes the time reference. Am/is/are + verb + -ing places the action at the present moment or around it, while was/were + verb + -ing places the action at a past moment or around it. When you hear or read was or were, the action belongs to a past scene, even if the activity itself is the same.