Have you ever wondered the difference between swam vs. swum?
If you thought swum was another one of those kidisms, you would be wrong.
About swam vs swum
The regular past tense of “swim” is “swam”: “I swam to the island.” However, when the word is preceded by a helping verb, it changes to “swum”: “I’ve swum to the island every day.” The “’ve” stands for “have,” a helping verb.
So now you know.