A week yesterday, last Monday, etc.
adverbial phrase
A specific point in time or date in the past. For example, 'a week yesterday' means the day that was exactly one week before yesterday. 'Last Monday' means the most recent Monday that has passed.
'I submitted my assignment a week yesterday.' or 'I had a meeting last Monday.'

Often appears as...
- 'a week yesterday
- i was...'
adverbial phrase
A specific point in time or date in the past. For example, 'a week yesterday' means the day that was exactly one week before yesterday. 'Last Monday' means the most recent Monday that has passed.
'I submitted my assignment a week yesterday.' or 'I had a meeting last Monday.'

Often appears as...
- 'a week yesterday
- i was...'
Definition 1 of 1

Relative Time
Understand it pinpoints a day relative to today by referencing a previous day or week.

We caught up a week yesterday, and she's been better since.
Recent Reference
Use it to talk about the nearest past instance of a day or event.

Last Monday, our class started discussing Shakespeare.
Not Yesterday
Remember 'a week yesterday' isn't the same as 'one week ago' which could mean any day.

I met her a week yesterday, not last Tuesday.
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