Video link on YouTube @ https://youtu.be/n-TIfwytoD4 At school, Danny and Erick learn when to use es to make plural nouns. They learn to add es to make a noun plural when the noun ends in ch, sh, s or x. Examples include peach -peaches, brush - brushes, walrus - walruses, box - boxes and many more examples. At school, Danny and Erick learn when to use es to make plural nouns. They learn to add es to make a noun plural when the noun ends in ch, sh, s or x. Examples include peach -peaches, brush - brushes, walrus - walruses, box - boxes and many more examples.