“Sell” is an irregular verb because its past tense is “sold.” He has been behaving irregularly.
An irregular verb, noun, or adjective has different forms from most other verbs, nouns, or adjectives in the language. For example, break' is an irregular verb because its past form is broke,' not `breaked.'
Discover Magazine: The evolution of the past tense - how verbs change over time
The evolution of the past tense - how verbs change over time
No matter how long you’ve been speaking English, no matter how hard you’ve worked to perfect your grammar, some past tense verbs can stump you. For example, the day after you decide to grin and bear ...
National Geographic news: The evolution of the past tense – how verbs change over time
The evolution of the past tense – how verbs change over time
That is the pattern for most verbs, but some verbs are irregular and behave differently. A visitor can't wander around the building unaccompanied - that would be most irregular.
Watch out! Some past participles are irregular. For example, He hecho mis deberes - I have done my homework. As you go around telling people what you’ve done, remember to keep the following rule in ...
Explore the evolutionary dynamics of language through verb changes seen from Old English to modern times. Discover the future of irregular verbs. This article is reposted from the old Wordpress ...
Los Angeles Times: A Word, Please: Shined or shone? Shining a light on tricky past tenses