Time Expression Example Sentence; a long time ago: I visited Paris a long time ago. a little while ago: She called me a little while ago. in the past: People used to travel by horse in the past. at one time: At one time, I was a teacher. the day/week before: We met the day before the conference. yesterday: I watched a movie yesterday. back then
Time Expressions in the Past Perfect Progressive (Continuous) Use since with a specific hour, month, year or a period in the past > since 2002 / since Tuesday; Use for with a number of hours, days, months or years > for twenty years; Use already between had and the verb > had already been flying
Duration of a Past Action before Another Past Action. The past perfect continuous is used to emphasize the duration of an action that started and continued for a while in the past before another past action occurred. Phrases like “for two months,” “since last year,” and “for a week” are durations that can be used with this tense.
'At' and 'at that moment' refer to a specific point of time in the past. These two expressions are often used with the past continuous. It is more common to use the past simple to speak in general, but if you want to express what was happening at a precise moment of time in the past, use the past continuous.
When there is both a frequency and a time (d) They cook dinner at 7:00 every night. expression in one sentence, the frequency expression can come before or after the time expression. (e) Once a week, they go out to eat. Frequency and time expressions can (f) On weekends, they stay in. sometimes come at the beginning of a sentence.
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past perfect time expressions