4. Sydney, Athens, Beijing, and London
146
Michael Phelps has never swum competitively in the 50 m distance. All of his gold medals were 100 m, 200 m, or 400 m. He holds the world record in the 100 m butterfly at 49.82 seconds, and swam an unofficial record 49.72 second butterfly relay leg in 2009.
will have swum
It must be used after some form of have. He/she/it (has) swum. We/You/they (have) swum. Or having, as in: Having swum the length of the pool....
swum as in I have swum the channel
Four
will have swum is the verb phrase.
swum as in I have swum the channel
Swum is the past participle of the verb "swim".
"You have just swum" is correct. "Swam" is the past tense, while "swum" is the past participle form of the verb "swim."
200
infinitive: swimpast: swampast participle: swum