We can use it to talk about a specific point in time.

• She came back last Friday.
• I saw her in the street.
• They didn't agree to the deal.

It can also be used to talk about a period of time.

• She lived in Tokyo for seven years.
• They were in London from Monday to Thursday of last week.
• When I was living in New York, I went to all the art exhibitions I could.

You will often find the past simple used with time expressions such as these:

• Yesterday
• three weeks ago
• last year
• in 2002
• from March to June
• for a long time
• for 6 weeks
• in the 1980s
• in the last century
• in the past