https://www.khanacademy.org/ela/5th-and-6th-grade-grammar/x90cef5375e9bcad6:nouns-5/x90cef5375e9bcad6:plural-nouns-5/a/regular-and-irregular-plural-nouns-5 2026-07-08T23:40:45.874044968Z Regular and irregular plural nouns Learn how to make nouns plural. article https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/irregular-plural-nouns-base-plurals-and-irregular-endings/v/irregular-plural-nouns-part-i-the-parts-of-speech-grammar-khan-academy 2026-07-19T06:05:50.693875657Z Irregular plural nouns: -f to -ves plurals Not all English nouns can be made plural only by adding an "s" to the end. These are called irregular plurals. Many words that end in "f", like "leaf", "loaf", and "calf", change their sound when they become plural: "leaves", "loaves", and "calves". video https://cdn.kastatic.org/googleusercontent/3a05CIUtVGdhAMRT3vYvk41jc0tF0XLmrl4Dt9Hsc-sHr1wQcJrl41TBsq8-XacH5bL6AIJRMlGwJuT_9QK1RXLv Irregular plural nouns: -f to -ves plurals Not all English nouns can be made plural only by adding an "s" to the end. These are called irregular plurals. Many words that end in "f", like "leaf", "loaf", and "calf", change their sound when they become plural: "leaves", "loaves", and "calves". https://cdn.kastatic.org/ka-youtube-converted/hhBhHW__Oxg.mp4/hhBhHW__Oxg.mp4 187 Plural nouns https://www.khanacademy.org/humanities/grammar/parts-of-speech-the-noun/irregular-plural-nouns-base-plurals-and-irregular-endings/v/irregular-plural-nouns-part-ii-the-parts-of-speech-grammar-khan-academy 2023-09-19T21:32:47.781412264Z Irregular plural nouns: -en plurals We talk about irregular plurals in English, focusing on the "en" ending. David explains that "child" becomes "children" and "ox" becomes "oxen. video https://cdn.kastatic.org/googleusercontent/KZ1yeFSI0ZBzH36EwhEL-rXGeK5Pq0KUBWRNEPVMw-SLna6R_oXWv76zg29KBV-7xeB8BMCR84DImaaB-MwS6Eqh5A Irregular plural nouns: -en plurals We talk about irregular plurals in English, focusing on the "en" ending. David explains that "child" becomes "children" and "ox" becomes "oxen. https://cdn.kastatic.org/ka-youtube-converted/n9poHOKkF28.mp4/n9poHOKkF28.mp4 443 Plural nouns https://www.khanacademy.org/ela/5th-and-6th-grade-grammar/x90cef5375e9bcad6:nouns-5/x90cef5375e9bcad6:plural-nouns-5/e/regular-and-irregular-plural-nouns-5 2026-07-08T23:40:45.874044968Z Regular and irregular plural nouns Practice making nouns plural Heather M. Meston exercise