This tense is often used with the following time expressions:
... in + year / month
...last week / month / year
Subject + Past Tense + object(s) + time Expression
I went to the doctor's yesterday.
Subject + did + not (didn't) + verb + object(s) + time Expression
They didn't join us for dinner last week.
(Question Word) + did + subject + verb + object(s) + time Expression
When did you buy that pullover?
Take this past simple quiz to check your understanding.
If you are a teacher, use this guide on how to teach the past simple tense for more help.