Key
Could is used to talk about a general ability in
the past.
Was able to is used to talk about an ability on a
specific occasion in the past.
- could
When John was 16, he could already drive.
At the age of seven, Lisa could already speak three languages.
Matt was very smart, he could beat anybody in his class.
- was able to
John got lost but he was able to get back home by taxi.
When Lisa was in France, she was able to talk with the locals in French.
In the final test, Matt was able to get the best score.
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