Ago - English Grammar Today - Cambridge Dictionaries Online
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

The adverb ago refers to a period of time that is completed and goes from a point in the past up to now. Ago follows expressions of time:

It happened a long time ago.

They arrived in Athens six weeks ago.

Not: They arrived in Athens ago six weeks.

Warning:

We normally use ago with the past simple. We don’t use it with the present perfect:

I received his letter four days ago.

Not: I have received his letter four days ago.

If we refer to a point in time before a specific time in the past, we use before or earlier or previously, often with the past perfect:

We had got their invitation four days before.

They met on the same island where they had met ten years previously.

If we refer to how long something lasted, we use for (not ago):

When I was at school, I studied Russian for five years. (my studies lasted for five years)

(“Ago” from English Grammar Today © Cambridge University Press. Need grammar practice? Try English Grammar Today with Workbook.)
Add Cambridge dictionaries to your browser to your website
Word of the Day
sprint

a short and very fast race, such as the 100 metres, or the last part of a longer race that is run as fast as possible

Word of the Day

Are you a glass-half-full person? (Everyday Idioms)
Are you a glass-half-full person? (Everyday Idioms)
by Kate Woodford,
July 29, 2015
A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More