What’s the past tense of “swim”?
Today’s lesson is on the past tense of swim—let’s dive right in!
Yesterday, I swam in the ocean and saw many colorful fish.
She swam across the pool in record time.
He swimmed in the lake until he was tired.
They swammed for hours, enjoying the cool water.
Verb forms of swim
To swim, defined by Collins Dictionary, is “to move through water by moving your arms and legs, without touching the bottom”. See the conjugations of swim below—
| present | past | future | |
| simple | I swim | I swam | I will swim |
| continuous | I am swimming | I was swimming | I will be swimming |
| perfect | I have swum | I had swum | I will have swum |
| perfect continuous | I have been swimming | I had been swimming | I will have been swimming |
To swim is in the present tense: How long will it take her to swim the Channel?
Swam is the simple past: The boys swam across the lake.
Swum is the past participle: I have swum in that pool before.
Irregular verbs like “swim”
| base verb | past tense | past participle |
| fly | flew | flown |
| blow | blew | blown |
| draw | drew | drawn |
| eat | ate | eaten |
| drink | drank | drunk |
When to use swam vs. swum
Read these sentences:
The boys swam across the lake. (past tense)
I have swum in that pool before. (past participle)
The past participle forms one of the perfect tenses, and also forms the passive voice, which uses a sentence object. Both the past participle and past tense of the verb swim (along with the past tenses of any verb) refer to actions or events that were completed entirely in the past. That’s a lot of information, and it helps to know certain ‘key terms’ in advance (it’s instructive to read the blog on verb tenses and participles before this one, in particular).
The second sentence that shows the past participle also includes an auxiliary verb, have. Remove the auxiliary verb from the sentence, and it’s clear how participles require the use of an auxiliary/helping verb to function in sentences. This is because participles are based on verbs, and are not complete verbs that are capable of standing alone in sentences. Participles partake in the nature of a verb, and use auxiliary verbs.
Sentences with “swim” (present simple)
They are too far out to swim to shore.
I have always found it easy to swim underwater.
Can you swim backstroke yet?
How long will it take her to swim the Channel?
I can’t swim.
Sentences with “swam” (simple past)
The boys swam across the lake.
Exhausted, they swam ashore.
His head swam and he swayed dizzily.
He swam deeper into the lake.
He swam to an island that was not far away.
To remember the past tense of “swim,” associate it with other irregular verbs. Creating flashcards with irregular verbs grouped together can aid memorization.
Sentences with “swum” (past participle)
I have swum in that pool before.
I had swum for only 15 minutes before it started to rain.
I’ve swum in these rivers, and they are unstable.
She has swum with sharks, sat on elephants, and ridden on dolphins.
As the only man on deck in the small hours, he sees that a man has swum up to the ship’s side.
Phrases with the word swim
| phrase | meaning |
|---|---|
| sink or swim | To succeed or fail quickly at something. |
| to be in the swim of things | To be involved/knowledgeable on something. |
| faster than a minnow can swim a dipper | To do something extremely quickly. |
| to swim against the current | To go against the norm or conventions. |
| to swim with the tide or stream | To go along with prevailing attitudes and sentiments. |
| to swim with the fishes | Famously popularized by Mario Puzo, The Godfather. Meaning, to be dead. |
Origin of the word swim
From etymology online on swim (v.):
Old English swimman “to move in or on the water, float” from Proto-Germanic *swimjan.
Other commonly confused verb tenses
- What’s the past tense of spread?
- What’s the past tense of lead?
- What’s the past tense of choose?
- What’s the past tense of fly?
- What’s the past tense of lay?
- What’s the past tense of drive?
- What’s the past tense of draw?
Learn more about verbs
- What are regular and irregular verbs?
- Transitive and intransitive verbs?
- What are verbs?
- What’re personal pronouns?
- What’s the difference between they’re, their, and there?
- Whose vs who’s?
Sources
- Harper, Douglas. “Etymology of swim.” Online Etymology Dictionary, https://www.etymonline.com/word/swim. Accessed 16 January, 2023.
- “Swim.” TheFreeDictionary.com. 2023. Farlex, Inc. 16 Jan. 2023 https://idioms.thefreedictionary.com/swim
Work Sheet
What is the simple past tense form of the verb “swim”?
Which of the following sentences correctly uses the simple past tense of “swim”?
Which form of “swim” is considered the past participle?
The past participle form of “swim” (swum) is typically used with what type of verbs?
According to the post, which is an incorrect conjugation of the verb “swim”?
Yesterday afternoon, we in the pool.
She has never in such cold water before.
They to the island that was not far away.
I had already a mile by the time they arrived.
The boys across the lake quickly.
Frequently Asked Questions
What’s the simple past of swim?
+
Is “swimmed” the correct past tense?
+
When should I use “swum”?
+
Does “swum” stand alone as a verb?
+
What form of swim do I use after “have”?
+
Yash, D. "What’s the Past Tense of Swim? Swam vs. Swum." Grammarflex, Jun 11, 2025, https://www.grammarflex.com/swam-or-swum-whats-the-past-tense-of-swim/.
