Past tense verbs for swim, run, and jump.

Germanic verbs (inclding English) can be roughly divided into two classes: weak and strong. Weak verbs end with -ed in the past tense and past participle. Strong verbs follow different paradigms. "swim" and "run" are strong verbs. "jump" is a weak verb.

If only it were that simple. For what it’s worth: If you say “swimmed” we will know it’s wrong, but we will understand what you mean. If you say “jamp” we will have no idea what you mean.

In short, because English has no single host language, so there are no consistent rules for conjugation. Like the Romance languages for example are just varying degrees of modifications to the Latinate grammar. But English is some of that, a lot of Germanic stuff, a smidge of some Nordic jazz, a sprinkling of Gaelic...

Many people don’t like to hear this, but you simply have to learn each verb’s conjugation. It’s as simple as that. There are no real shortcuts. No tricks. It is what it is.

I'm from a little town in Scotland and we do say "jamp". It's only recognised in this town but once you get used to saying it, it's hard to stop! Trying to make it happen in the rest of the world 🤣

English is full of exceptions and my heart goes out to anyone learning it as a second language. Also, I’m using jamped from now on.

swam, ran and jamped. obviously 

Because “swim” and “run” are irregular verbs and “jump” is regular: swim - swam - swum run - ran - run go - went - gone have - had - had eat - ate - eaten do - did - done see - saw - seen make - made - made be (am/is/are) - was/were - been etc. The reason for this is partly because English verbs used to be conjugated differently and vowel changes were the regular way of conjugating many verbs. Many verbs have resisted the change to the current regular conjugation, -ed, because they tend to be more commonly used, thus cementing their irregular forms. But there are other irregular verbs that come from suppletion (e.g., be, go) or simplification (e.g., make) and other sources. Unfortunately, the only way to learn irregular verbs is by memorizing their three forms.

Kind of a side note, but people sometimes will say the wrong past tense of a word to be funny. For example I’ve seen people online say “omg, the scream I just scrumped” because it sounds funny. Scrumped isn’t a word but we can tell what they mean (the scream I just screamed)

You're making a fatal mistake when trying to understand English grammar rules.  English is like 5 languages stapled together.   You can't universally apply rules for anything because it's not one cohesive language.  Unfortunately you just have to memorize the verb tenses for all verbs, because there aren't strict rules that allow you to infer them. 

This is what you call irregular conjugations, just gotta buckle up and learn them. It's a hell of a time

A lot of verbs end in -ed in the past tense. So many that a toddler will likely make a mistake like “I runned so fast!”. In fact I can think of situations where verbs are sort of created that don’t otherwise exist in the English lexicon and -ed is likely to be the past tense conjugation (“googled”, “tweeted”) It’s the other verbs with a completely different form that are difficult to memorize and know. Toddlers figure it out through exposure and memorization and eventually “runned” just *sounds* wrong.

Because English is full of irregular verbs and spellings and so much other stuff. We do exactly what you have to do ... we memorize it. We just happen to do most of our memorizing via immersion while we are children, so we don't have to learn rules and checklists. We just know it's "swam", and "ran" and "jumped" because that's what we've heard all our lives. Learning why particular irregular things happen is actually pretty advanced language study here, where you dive into "these words came into English via Latin/French/German/etc., so here's how they behave differently". When you are a kid in school they just correct you if you write "I runned" and don't explain why other than telling you it's wrong and to use "I ran".

Never thought of the word "jamp" before and I really like it. I'm going to start using it.

This is a good r/asklinguistics question as well. The real answer is that some of these Germanic roots go all the way back to Proto-Indo-European, where a system called ‘ablaut’ used variations in vowels to differentiate forms of verbs. Many items of core vocabulary have maintained these alternations for thousands of years and now appear to be irregular verbs, as the more regular pattern is in fact younger. As for English Learning, unfortunately there’s no shortcut around exposure and memorization. You might also notice that the verb ‘fling’ has past participle ‘flung’, but ‘flang’ is less common for the simple past than ‘flinged’ or ‘flung’, and in fact ‘flinged’ is sometimes used as the participle as well. English has millennia of influence from different languages at different levels, and the result is a very jumbled, unpredictable system. Native speakers will often generalize some aspect of the system to new forms, resulting in some parts becoming more common over time almost arbitrarily, further exacerbating the unpredictability.

Honestly, I like "jamp". Let's make it happen!

Most words that have irregular past tense are words that are Germanic in origin and have been retained in English from Old English. In Old English many verbs had irregular past tense (and even sometimes present tense) conjugations. However, a lot of Germanic words were replaced in the language in favor of French-origin words so today there are not nearly as many. One word that didn't make it is OE gelimpan (to happen) which was gelamp in past tense and gelumpen as past participle. It isn't necessary to know the origin of words to be fluent in English but if you're curious about why different words have different rules it's almost always a question of etymology.

it due to the word jumped being more new i believe, so there isnt really a rule on how to tell, its more of a memory thing though in the uk (more specifically scotland and northern england) some people may say jamp instead of jumped

Lately, I've noticed a lot of of people writing or saying "I have ran/I have drank". No, NO, NO!

You just have to memorize the irregular past tenses. But in real life, if you don’t know, use the -ed construction. I’d know what you meant if you said, “I swimmed,” but would have no idea what “jamp” was supposed to mean.

The same reason do becomes did, win becomes won, go becomes went. Because English has very few consistent conjugation rules and every rule has almost as many exceptions. In other words, there's no pattern you can learn to know how a verb is conjugated. You just gotta practice and memorize them.

Strong/weak is like the host of “irregular” verbs one has to deal with in almost any European language. Generally, the “strong” verbs are very common, one syllable verbs. *Jump* is an exception, but (as is often the case) there is a *more* Germanic option which conjugates as a strong verb: *leap—>leapt.* It’s not a great case because although the vowel shifts like a strong verb, there is also the added /d/ or /t/ at the end. But yeah.

According to the [Online Etymology Dictionary](https://www.etymonline.com/), *jump* has "no apparent source in Old or Middle English;" it compares it to *bump*, which also conjugates with -ed. *Swim* and *run* are old enough to have their own forms for the past tense, which we've retained.

Unfortunately, English has lots of irregular verbs. Adding -ed is the general rule. However you have to just memorize the odd ones like ran and swam

Petition to make jamp a thing

Look there are no clear rules in any language. In every language these perceptions and exception are found. The perceptions and exception determine whether the language is hard or easy. Now i come to your answer, look these types of question are often asked. The best think you can do is to not question English grammar or else it would lead you to confusion in grammar and you will not learn anything. To solve these issues the best thing you can do is to read books. Reading will provide you to enhance more natural flow.