over the past 100 years vs over the past 100 years ago

The correct phrase is 'over the past 100 years.' The phrase 'over the past 100 years ago' is incorrect because 'ago' is redundant when referring to a period of time that has already passed.

Last updated: March 20, 2024

over the past 100 years

This phrase is correct and commonly used in English.

This phrase is used to refer to a period of time that has just ended, emphasizing events or changes that have occurred during that time frame.

Examples:

Over the past 100 years, technology has advanced rapidly.
The population of the city has doubled over the past 100 years.

Show examples from the web [+]

Jul 16, 2015 ... The ideal female body has changed a lot over the past 100 years. This Is What The Ideal Body Has Looked Like Over The Past 100 Years.
To. You have successfully emailed the post. Here's how cars have changed over the past 100 years. Cannot Contact Server. Please upgrade your Flash Plugin ...
Research shows that global temperatures have in fact risen by .6 degrees Celsius over the past 100 years and the National Academy of Sciences indicate that ...
Climate Change Over the Past 100 Years. Global surface temperature has been measured since 1880 at a network of ground-based and ocean-based sites.

over the past 100 years ago

This phrase is incorrect in English as 'ago' is redundant when referring to a period of time that has already passed.

Show examples from the web [+]

Nov 5, 2013 ... There is much confusion over what it means to be a behaviorist. This is largely due to silly posturing by Big Names over the past 100 years ago.
I have seen many of the original slides that have been produced over the past 100 years ago and they are many times better. Many of us could have done a ...
Mar 29, 2015 ... ... maybe this could tell you that Amanda cheated for this fat lazy ass mind-fucked bastard about over the past 100 years ago, pretty fucking sad ...

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over the past 100 years vs over the past 100 years ago