last week
fixed phr.. A1 Beginner Oxford
fixed phr.. The week before the one we are in now.
fixed phr.. An adverbial phrase of time referring to the seven-day period immediately preceding the current one.
The report from last week is on your desk.
I went to the cinema last week to see the new superhero movie.
The decisions made last week regarding the merger will have profound and lasting consequences for the entire industry.
Usage
This phrase acts as an adverb of time and does not need a preposition like 'in' or 'on'.
Teaching tip
Teach this as part of a set with 'this week' and 'next week', emphasizing the absence of prepositions.
Pitfall
We met on last week.We met last week.Time expressions with 'last', 'next', 'this', and 'every' do not use prepositions like 'on', 'at', or 'in'.