Adverbials used with the simple past

When we make a sentence in the simple past we often use an adverbial to say when the event happened:

Sentence Adverbial
I went to Madrid yesterday
last week
last month, etc.
If we want to say how much time has passed since the event happened we use AGO 2 days ago
2 weeks ago
5 years ago
a long time ago
We can say how long the event lasted with FOR for 2 weeks
for 5 months