Both are grammatically correct; the meaning differs slightly.
"When he was running, I noticed him limp," conveys the idea that during an activity that is now over something happened., as in "he may not be limping now, but when he was running, I saw him limp."
"When he ran, I noticed him limp," conveys the idea that (perhaps) he ran several times, limping each time.
past: ran past perfect: had run past progressive: was/were running past perfect progressive: had been running
"Ran" is already the past tense of the verb "run." Here’s a breakdown: Base form (present tense): run Example: I run every morning. Past tense: ran Example: I ran yesterday. Past participle: run Example: I have run three miles today. more read : nsda.portal.gov.bd/site/page/92fd3b71-62de-43d9-b291-f80855dab52b
Ran
Ran out of gas? Or ran out of oil?
No, the correct past tense form of "run" in this case is "was ran" or "were running."
Ran is the past tense of run. Running is the present participle.
slowly or fast, or quickly, or pantingly, or stumblingly
The athletes were running.
The word 'ran' is the past tense of the verb to run (runs, running, ran). The noun forms are:runrunsrunnerrunningrunwayrunoffrunner-uprunaboutrundownrunaway
The past tense of "run" is "ran", and the present tense is "run".
The verb in this statement is the word "ran".This is because the word "ran" is an action.Other similar verbs are run, running and runs.
Romney's running mate was Paul Ryan.